CN106506897A - A kind of automatic compensating method of the light-source brightness of imageing sensor and device - Google Patents
A kind of automatic compensating method of the light-source brightness of imageing sensor and device Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
- H04N1/03—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array
- H04N1/031—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array the photodetectors having a one-to-one and optically positive correspondence with the scanned picture elements, e.g. linear contact sensors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
- H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
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Abstract
The invention belongs to image information acquisition technical field, there is provided a kind of automatic compensating method of the light-source brightness of imageing sensor and device.The present invention passes through the present intensity value for obtaining the array of source in the initialization procedure of described image sensor；Judge the present intensity value whether in preset range；If the present intensity value is not in preset range, the present intensity value is adjusted, till the present intensity value is in the preset range, so that light-source brightness when imageing sensor is per task is in preset range, so that the brightness of image that imageing sensor is collected can improve the stability and reliability of product with always consistent.
Description
Technical field
The invention belongs to image information acquisition technical field, more particularly to a kind of light-source brightness of imageing sensor is automatic
Compensation method and device.
Background technology
CIS (Contact Image Sensor, contact-type image sensor) is after CCD (Charge-coupled
Device, charge coupled cell) after the nineties in 20th century research and development a kind of new photoelectric coupled device, its have
There are low small volume, price, simple structure, easy for installation, lead in facsimile machine, scanner, banknote scanning recognition etc. at present
Domain is widely used.
CIS is integrated in array of source, column lens array, photosensor arrays etc. in a strip rectangular box.When
When CIS works, the light direct projection that array of source sends to body surface to be scanned, from the light that body surface to be scanned is reflected back
Focus on through column lens array, enter photosensor arrays, the optical signal of varying strength is converted to by photosensor arrays
Corresponding analog electrical signal, then export after operational amplifier and analog-digital converter conversion to computer, after computer disposal just
The scanogram of object to be scanned is obtained.
However, existing CIS is after used a period of time, can there is a problem of that light-source brightness is decayed, cause scanning to be arrived
The brightness of image can not be always consistent.
Content of the invention
It is an object of the invention to provide a kind of automatic compensating method of the light-source brightness of imageing sensor and device, it is intended to
Solve existing for existing CIS after used a period of time, to there is a problem of that light-source brightness is decayed, cause to scan
The brightness of image can not be always consistent problem.
The present invention is achieved in that a kind of automatic compensating method of the light-source brightness of imageing sensor, described image are passed
Sensor includes array of source and photosensor arrays；The array of source is used for launching light to object to be scanned, the light
Electric transducer array is exported to process after being used for for the optical signal that the object to be scanned is reflected back being converted to the corresponding signal of telecommunication
Module, so that the processing module is processed to the signal of telecommunication, obtains the view data of the object to be scanned；The figure
As the automatic compensating method of the light-source brightness of sensor includes：
In the initialization procedure of described image sensor, the present intensity value of the array of source is obtained；
Judge the present intensity value whether in preset range；
If the present intensity value is not in preset range, the present intensity value is adjusted, until described current
Till brightness value is in the preset range.
Further, white reference, the initialization in described image sensor are provided with described image sensor
Cheng Zhong, the present intensity value for obtaining the array of source are specifically included：
In the initialization procedure of described image sensor, control the array of source and launch light to the white reference；
Obtain the corresponding view data of the white reference；
According to described image data, the present intensity value of the array of source is determined.
Further, described in the initialization procedure of described image sensor, obtain the brightness value of the array of source
Before, the automatic compensating method of the light-source brightness of described image sensor also includes：
Obtain the initial luma values of the array of source；Wherein, the initial luma values are used for identifying described image sensing
The brightness value of array of source when device dispatches from the factory.
Further, the corresponding minimum luminance value of the preset range is the initial luma values and predetermined luminance elementary errors amount
Difference；The corresponding maximum brightness value of the preset range is the initial luma values and the predetermined luminance elementary errors amount sum.
Further, if the present intensity value is carried out to the present intensity value not in the preset range
Adjust, specifically include till the present intensity value is in the preset range：
If the present intensity value increases the present intensity less than the corresponding minimum luminance value of the preset range
Value, till the present intensity value is in the preset range；
If the present intensity value reduces the present intensity more than the corresponding maximum brightness value of the preset range
Value, till the present intensity value is in the preset range.
Present invention also offers a kind of autocompensation installation of the light-source brightness of imageing sensor, described image sensor bag
Include array of source and photosensor arrays；The array of source is used for launching light to object to be scanned, the photoelectric sensing
Device array is exported to processing module after being used for for the optical signal that the object to be scanned is reflected back being converted to the corresponding signal of telecommunication, with
Make the processing module process the signal of telecommunication, obtain the view data of the object to be scanned；Described image is sensed
The autocompensation installation of the light-source brightness of device includes：
Acquisition module, for, in the initialization procedure of described image sensor, obtaining the current bright of the array of source
Angle value；
Whether judge module, for judging the present intensity value in preset range；
Adjustment module, if for the present intensity value not in preset range, being adjusted to the present intensity value,
Till the present intensity value is in the preset range.
Further, the acquisition module is specifically included：
Control unit, in the initialization procedure of described image sensor, controls the array of source to described white
Reference emission light；
Acquiring unit, for obtaining the corresponding view data of the white reference；
Determining unit, for according to described image data, determining the present intensity value of the array of source.
Further, the acquisition module is additionally operable to the initial luma values for obtaining the array of source；Wherein, described initial
Brightness value is used for the brightness value for identifying array of source when described image sensor is dispatched from the factory.
Further, the corresponding minimum luminance value of the preset range is the initial luma values and predetermined luminance elementary errors amount
Difference；The corresponding maximum brightness value of the preset range is the initial luma values and the predetermined luminance elementary errors amount sum.
Further, the adjustment module is specifically included：
Unit is tuned up, if increasing less than the corresponding minimum luminance value of the preset range for the present intensity value
The present intensity value, till the present intensity value is in the preset range；
Turn unit down, if reducing more than the corresponding maximum brightness value of the preset range for the present intensity value
The present intensity value, till the present intensity value is in the preset range.
The present invention passes through the present intensity for obtaining the array of source in the initialization procedure of described image sensor
Value；Judge the present intensity value whether in preset range；If the present intensity value is not in preset range, work as to described
Front brightness value is adjusted, till the present intensity value is in the preset range, so that imageing sensor is every
Light-source brightness during task is in preset range so that the brightness of the image that imageing sensor is collected can be protected all the time
Hold unanimously, improve the stability and reliability of product.
Description of the drawings
Fig. 1 is a kind of realization stream of the automatic compensating method of the light-source brightness of imageing sensor provided in an embodiment of the present invention
Cheng Tu；
Fig. 2 is the position relationship schematic diagram between white reference provided in an embodiment of the present invention and imageing sensor；
Fig. 3 is a kind of reality of the automatic compensating method of the light-source brightness of imageing sensor that another embodiment of the present invention is provided
Existing flow chart；
Fig. 4 is a kind of the schematic of the autocompensation installation of the light-source brightness of imageing sensor provided in an embodiment of the present invention
Block diagram；
Fig. 5 is a kind of showing for the autocompensation installation of the light-source brightness of imageing sensor that another embodiment of the present invention is provided
Meaning property block diagram.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, and
It is not used in the restriction present invention.
Fig. 1 is a kind of realization stream of the automatic compensating method of the light-source brightness of imageing sensor provided in an embodiment of the present invention
Cheng Tu.In the present embodiment, imageing sensor can be CIS (Contact Image Sensor, contact-type image sensor).
CIS can be used for banknote scanning recognition module of scanner, facsimile machine, self-service equipment etc., for obtaining object to be scanned (such as paper money
Ticket, paper document etc.) view data.Specifically, imageing sensor includes array of source, column lens array, photoelectric sensing
The parts such as device array.Array of source can be LED (Light Emitting Diode, light emitting diode) array of source.Light source
Array, column lens array, photosensor arrays etc. are integrated in the square shell of a strip.When imageing sensor work
When making, light direct projection that array of source sends to body surface to be scanned, the light being reflected back from body surface to be scanned is through post
Shape lens arra is focused on, and enters photosensor arrays, and the optical signal of varying strength is converted to accordingly by photosensor arrays
Analog electrical signal after export to the processing module for including operational amplifier, analog-digital converter and computer etc., operational amplifier
Analogue signal is amplified, analog-digital converter conversion is exported to computer after converting analog signals into digital signal, is calculated
Machine is processed to digital signal is just obtained the corresponding view data of object to be scanned.
As shown in figure 1, the automatic compensating method of the light-source brightness of imageing sensor may comprise steps of：
S101：In the initialization procedure of described image sensor, the present intensity value of the array of source is obtained.
In the embodiment of the present invention, in the initialization procedure when imageing sensor is started working every time, image sensing is obtained
The present intensity value of the array of source of device.
In actual applications, in order to accurately obtain the brightness value of the array of source of imageing sensor, can be in image sensing
White reference (arranging the white paper slip of a very little on the image sensor) is set on device, for as brightness references.Bai Ji
Position relationship between accurate and imageing sensor may be referred to Fig. 2, and white reference is typically arranged on the margin location of imageing sensor
Put, to prevent from producing impact in imageing sensor normal work to the scanning process of object to be scanned.Therefore, step S101 can
To comprise the following steps：
In the initialization procedure of described image sensor, control the array of source and launch light to the white reference；
Obtain the corresponding view data of the white reference；
According to described image data, the present intensity value of the array of source is determined.
In the initialization procedure of imageing sensor, control array of source launches light to white reference, reflects from white reference
The light for returning is focused on through column lens array, enters photosensor arrays, and photosensor arrays convert optical signals to phase
Export after the analog electrical signal that answers to processing module, the operational amplifier in processing module is amplified to analog electrical signal, locate
Analog electrical signal is converted to and export after digital electric signal to computer by the analog-digital converter in reason module, and computer is to digital electricity
Signal carries out process and obtains the corresponding view data of white reference.
The corresponding view data of white reference is obtained, and according to the corresponding view data of white reference, determines working as array of source
Front brightness value.
S102：Judge the present intensity value whether in preset range.
After the present intensity value for getting array of source, judge the present intensity value of array of source whether in default model
In enclosing.
Wherein, preset range can be configured according to the actual requirements by user, be not limited herein.
S103：If the present intensity value is not in preset range, the present intensity value is adjusted, until described
Till present intensity value is in the preset range.
If judging, the present intensity value of array of source, not in preset range, is carried out to the present intensity value of array of source
Adjust, till the present intensity value of array of source is in preset range.
If judging, the present intensity value of array of source, in preset range, is not carried out to the present intensity value of array of source
Any regulation.
In actual applications, the electric current of each light source in array of source or each light source two ends can be flowed through by adjusting
Voltage, is adjusted come the present intensity value to array of source, is determined with specific reference to practical situation, is not limited herein.
Above as can be seen that a kind of automatic compensating method of the light-source brightness of imageing sensor of the present embodiment offer, leads to
Cross the present intensity value that the array of source is obtained in the initialization procedure of described image sensor；Judge described currently bright
Whether angle value is in preset range；If the present intensity value is not in preset range, the present intensity value is adjusted,
Till the present intensity value is in the preset range, so that light-source brightness when imageing sensor is per task
It is in preset range so that the brightness of the image that imageing sensor is collected can improve product with always consistent
Stability and reliability.
Fig. 3 is a kind of reality of the automatic compensating method of the light-source brightness of imageing sensor that another embodiment of the present invention is provided
Existing flow chart, in the present embodiment, imageing sensor can be that (Contact Image Sensor, contact type image are sensed CIS
Device).CIS can be used for banknote scanning recognition module of scanner, facsimile machine, self-service equipment etc., for obtaining object to be scanned
The view data of (such as banknote, paper document etc.).Specifically, imageing sensor includes array of source, column lens array, photoelectricity
The parts such as sensor array.Array of source can be LED (Light Emitting Diode, light emitting diode) array of source.
Array of source, column lens array, photosensor arrays etc. are integrated in the square shell of a strip.Work as image sensing
When device works, the light direct projection that array of source sends to body surface to be scanned, from the light that body surface to be scanned is reflected back
Focus on through column lens array, enter photosensor arrays, the optical signal of varying strength is converted to by photosensor arrays
Export to the processing module for including operational amplifier, analog-digital converter and computer etc. after corresponding analog electrical signal, computing is put
Big device is amplified to analogue signal, and analog-digital converter conversion is exported to computer after converting analog signals into digital signal,
Computer is processed to digital signal is just obtained the corresponding view data of object to be scanned.
As shown in figure 3, the automatic compensating method of the light-source brightness of imageing sensor may comprise steps of：
S301：In the initialization procedure of described image sensor, the present intensity value of the array of source is obtained.
In the embodiment of the present invention, in the initialization procedure when imageing sensor is started working every time, image sensing is obtained
The present intensity value of the array of source of device.
In actual applications, in order to accurately obtain the brightness value of the array of source of imageing sensor, can be in image sensing
White reference (arranging the white paper slip of a very little on the image sensor) is set on device, for as brightness references.Bai Ji
Position relationship between accurate and imageing sensor may be referred to Fig. 2, and white reference is typically arranged on the margin location of imageing sensor
Put, to prevent from producing impact in imageing sensor normal work to the scanning process of object to be scanned.Therefore, step S301 can
To comprise the following steps：
In the initialization procedure of described image sensor, control the array of source and launch light to the white reference；
Obtain the corresponding view data of the white reference；
According to described image data, the present intensity value of the array of source is determined.
In the initialization procedure of imageing sensor, control array of source launches light to white reference, reflects from white reference
The light for returning is focused on through column lens array, enters photosensor arrays, and photosensor arrays convert optical signals to phase
Export after the analog electrical signal that answers to processing module, the operational amplifier in processing module is amplified to analog electrical signal, locate
Analog electrical signal is converted to and export after digital electric signal to computer by the analog-digital converter in reason module, and computer is to digital electricity
Signal carries out process and obtains the corresponding view data of white reference.
The corresponding view data of white reference is obtained, and according to the corresponding view data of white reference, determines working as array of source
Front brightness value.
Further, before step S301, the automatic compensating method of the light-source brightness of described image sensor can be with
Comprise the following steps：
Obtain the initial luma values of the array of source；Wherein, the initial luma values are used for identifying described image sensing
The brightness value of array of source when device dispatches from the factory.
When imageing sensor just dispatches from the factory, the initial luma values of the array of source of imageing sensor are obtained.
Specifically, when imageing sensor just dispatches from the factory, control array of source launches light to white reference, reflects from white reference
The light for returning is focused on through column lens array, enters photosensor arrays, and photosensor arrays convert optical signals to phase
Export after the analog electrical signal that answers to processing module, the operational amplifier in processing module is amplified to analog electrical signal, locate
Analog electrical signal is converted to and export after digital electric signal to computer by the analog-digital converter in reason module, and computer is to digital electricity
Signal carries out process and obtains the corresponding view data of white reference, according to the corresponding view data of now white reference, you can determine light
The initial luma values of source array.The initial luma values of array of source are stored, using the brightness reference value as array of source.
S302：Judge the present intensity value whether in preset range.
After the present intensity value for getting array of source, judge the present intensity value of array of source whether in default model
In enclosing.
Wherein, preset range can be configured according to the actual requirements by user, be not limited herein.
Used as one embodiment of the invention, user can be using the initial luma values of array of source as reference value, by light source battle array
The initial luma values of row and the difference of a predetermined luminance elementary errors amount as the corresponding minimum luminance value of preset range, by array of source
Initial luma values and a predetermined luminance elementary errors amount sum as the corresponding maximum brightness value of preset range.
Wherein, default glimmer degree elementary errors amount can be configured according to the actual requirements and not be limited herein.For example, if light source
The initial luma values of array are D0, and predetermined luminance elementary errors amount is Δ d, then preset range is (D0- Δ d, D0+ Δ d).
S303：If the present intensity value is less than the corresponding minimum luminance value of the preset range, increase described current
Brightness value, till the present intensity value is in the preset range.
If judging the present intensity value of array of source not in preset range, and the present intensity value of array of source being less than pre-
If the corresponding minimum luminance value of scope, then increase the present intensity value of array of source, until at the present intensity value of array of source
In preset range.
For example, if the present intensity value of array of source increases the present intensity value of array of source less than D0- Δ d, until
The present intensity value of array of source is in (in D0- Δ d, D0+ Δs d).
In actual applications, the current of array of source can be increased by the electric current of each light source in increase array of source
Brightness value, is configured with specific reference to practical situation, is not limited herein.
S304：If the present intensity value is more than the corresponding maximum brightness value of the preset range, reduce described current
Brightness value, till the present intensity value is in the preset range.
If judging the present intensity value of array of source not in preset range, and the present intensity value of array of source being more than pre-
If the corresponding maximum brightness value of scope, then reduce the present intensity value of array of source, until at the present intensity value of array of source
In preset range.
For example, if the present intensity value of array of source reduces the present intensity value of array of source more than D0+ Δ d, until
The present intensity value of array of source is in (in D0- Δ d, D0+ Δs d).
In actual applications, the current of array of source can be reduced by the electric current of each light source in reduction array of source
Brightness value, is configured with specific reference to practical situation, is not limited herein.
If judging, the present intensity value of array of source, in preset range, is not appointed to the present intensity value of array of source
What is adjusted.
In actual applications, if the brightness value of array of source has been adjusted to ultimate value, its present intensity still cannot
In preset range, then send and adjust failure information, to remind user's mechanical disorder.If the brightness value of array of source is adjusted to
Work(, then send and adjust successful information, to indicate to be normally carried out follow-up work.
Above as can be seen that a kind of automatic compensating method of the light-source brightness of imageing sensor of the present embodiment offer, leads to
Cross the present intensity value that the array of source is obtained in the initialization procedure of described image sensor；Judge described currently bright
Whether angle value is in preset range；If the present intensity value is not in preset range, the present intensity value is adjusted,
Till the present intensity value is in the preset range, so that light-source brightness when imageing sensor is per task
It is in preset range so that the brightness of the image that imageing sensor is collected can improve product with always consistent
Stability and reliability.
Fig. 4 is a kind of the schematic of the autocompensation installation of the light-source brightness of imageing sensor provided in an embodiment of the present invention
Block diagram.In the present embodiment, imageing sensor can be CIS (Contact Image Sensor, contact-type image sensor).
CIS can be used for banknote scanning recognition module of scanner, facsimile machine, self-service equipment etc., for obtaining object to be scanned (such as paper money
Ticket, paper document etc.) view data.Specifically, imageing sensor includes array of source, column lens array, photoelectric sensing
The parts such as device array.Array of source can be LED (Light Emitting Diode, light emitting diode) array of source.Light source
Array, column lens array, photosensor arrays etc. are integrated in the square shell of a strip.When imageing sensor work
When making, light direct projection that array of source sends to body surface to be scanned, the light being reflected back from body surface to be scanned is through post
Shape lens arra is focused on, and enters photosensor arrays, and the optical signal of varying strength is converted to accordingly by photosensor arrays
Analog electrical signal after export to the processing module for including operational amplifier, analog-digital converter and computer etc., operational amplifier
Analogue signal is amplified, analog-digital converter conversion is exported to computer after converting analog signals into digital signal, is calculated
Machine is processed to digital signal is just obtained the corresponding view data of object to be scanned.
Each module that the autocompensation installation of the light-source brightness of the imageing sensor of the present embodiment includes is used for executing Fig. 1 pair
Each step in the embodiment that answers, specifically refers to the associated description in the corresponding embodiments of Fig. 1 and Fig. 1, does not repeat herein.
The autocompensation installation of the light-source brightness of the imageing sensor of the present embodiment includes：Acquisition module 401, judge module
402 and adjustment module 403.
Acquisition module 401 is used in the initialization procedure of described image sensor, obtains the current of the array of source
Brightness value.Acquisition module 401 sends the present intensity value of array of source to judge module 401.
Judge module 402 is used for the present intensity value of the array of source for receiving the transmission of acquisition module 401, judges described current
Whether brightness value is in preset range.Judge module 402 will determine that result is sent to adjustment module 403.
Adjustment module 430 is used for the judged result for receiving the transmission of judge module 402, if judged result is the present intensity
Value is adjusted to the present intensity value not in preset range, until the present intensity value is in the preset range
Till.
Above as can be seen that a kind of autocompensation installation of the light-source brightness of imageing sensor of the present embodiment offer, leads to
Cross the present intensity value that the array of source is obtained in the initialization procedure of described image sensor；Judge described currently bright
Whether angle value is in preset range；If the present intensity value is not in preset range, the present intensity value is adjusted,
Till the present intensity value is in the preset range, so that light-source brightness when imageing sensor is per task
It is in preset range so that the brightness of the image that imageing sensor is collected can improve product with always consistent
Stability and reliability.
Fig. 5 is a kind of showing for the autocompensation installation of the light-source brightness of imageing sensor that another embodiment of the present invention is provided
Meaning property block diagram.In the present embodiment, imageing sensor can be that (Contact Image Sensor, contact type image are sensed CIS
Device).CIS can be used for banknote scanning recognition module of scanner, facsimile machine, self-service equipment etc., for obtaining object to be scanned
The view data of (such as banknote, paper document etc.).Specifically, imageing sensor includes array of source, column lens array, photoelectricity
The parts such as sensor array.Array of source can be LED (Light Emitting Diode, light emitting diode) array of source.
Array of source, column lens array, photosensor arrays etc. are integrated in the square shell of a strip.Work as image sensing
When device works, the light direct projection that array of source sends to body surface to be scanned, from the light that body surface to be scanned is reflected back
Focus on through column lens array, enter photosensor arrays, the optical signal of varying strength is converted to by photosensor arrays
Export to the processing module for including operational amplifier, analog-digital converter and computer etc. after corresponding analog electrical signal, computing is put
Big device is amplified to analogue signal, and analog-digital converter conversion is exported to computer after converting analog signals into digital signal,
Computer is processed to digital signal is just obtained the corresponding view data of object to be scanned.
Each module that the autocompensation installation of the light-source brightness of the imageing sensor of the present embodiment includes is used for executing Fig. 3 pair
Each step in the embodiment that answers, specifically refers to the associated description in the corresponding embodiments of Fig. 3 and Fig. 3, does not repeat herein.
The autocompensation installation of the light-source brightness of the imageing sensor of the present embodiment includes：Acquisition module 401, judge module
402 and adjustment module 403.Wherein, acquisition module 401 includes control unit 410, acquiring unit 411 and determining unit 412；Adjust
Section module 403 includes turning unit 430 down and tunes up unit 431.
Acquisition module 401 is used in the initialization procedure of described image sensor, obtains the current of the array of source
Brightness value.Acquisition module 401 sends the present intensity value of array of source to judge module 401.
Specifically, the control unit 410 in acquisition module 401 is used in the initialization procedure of described image sensor,
Control the array of source and launch light to the white reference.
Acquiring unit 411 is used for obtaining the corresponding view data of the white reference.Acquiring unit 411 is corresponding by white reference
View data is sent to determining unit 412.
Determining unit 412 is used for the corresponding view data of white reference for receiving the transmission of acquiring unit 411, according to described image
Data, determine the present intensity value of the array of source.Determining unit 412 sends the present intensity value of array of source to judgement
Module 402.
Judge module 402 is used for the present intensity value of the array of source for receiving the transmission of determining unit 412, judges described current
Whether brightness value is in preset range.Judge module 402 will determine that result is sent to adjustment module 403.
Adjustment module 430 is used for the judged result for receiving the transmission of judge module 402, if judged result is the present intensity
Value is adjusted to the present intensity value not in preset range, until the present intensity value is in the preset range
Till.
Specifically, turn unit 430 down and tune up the judged result that unit 431 is used for receiving the transmission of judge module 402.If sentencing
Disconnected result is that the present intensity value is more than the corresponding maximum brightness value of the preset range, turns unit 430 down and reduces described working as
Front brightness value, till the present intensity value is in the preset range；If judged result is the present intensity value
Less than the corresponding minimum luminance value of the preset range, then tune up unit 431 and increase the present intensity value, until described current
Till brightness value is in the preset range.
Above as can be seen that a kind of autocompensation installation of the light-source brightness of imageing sensor of the present embodiment offer, leads to
Cross the present intensity value that the array of source is obtained in the initialization procedure of described image sensor；Judge described currently bright
Whether angle value is in preset range；If the present intensity value is not in preset range, the present intensity value is adjusted,
Till the present intensity value is in the preset range, so that light-source brightness when imageing sensor is per task
It is in preset range so that the brightness of the image that imageing sensor is collected can improve product with always consistent
Stability and reliability.
One of ordinary skill in the art will appreciate that：The step of realizing said method embodiment or part steps can pass through
Completing, aforesaid program can be stored in computer read/write memory medium the related hardware of programmed instruction, and the program exists
During execution, the step of including said method embodiment is executed, and aforesaid storage medium includes：ROM, RAM, magnetic disc or CD
Etc. various can be with the medium of store program codes.
Presently preferred embodiments of the present invention is the foregoing is only, not in order to limit the present invention, all in essence of the invention
Any modification, equivalent and improvement that is made within god and principle etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of automatic compensating method of the light-source brightness of imageing sensor, described image sensor include array of source and photoelectricity
Sensor array；The array of source is used for launching light to object to be scanned, and the photosensor arrays are used for will be described
The optical signal that object to be scanned is reflected back is exported to processing module after being converted to the corresponding signal of telecommunication, so that the processing module pair
The signal of telecommunication is processed, and obtains the view data of the object to be scanned；Characterized in that, the light of described image sensor
The automatic compensating method of source brightness includes：
In the initialization procedure of described image sensor, the present intensity value of the array of source is obtained；
Judge the present intensity value whether in preset range；
If the present intensity value is not in preset range, the present intensity value is adjusted, until the present intensity
Till being worth in the preset range.
2. the automatic compensating method of the light-source brightness of imageing sensor as claimed in claim 1, it is characterised in that described image
Covers disposed on sensor is equipped with white reference, described in the initialization procedure of described image sensor, obtains working as the array of source
Front brightness value is specifically included：
In the initialization procedure of described image sensor, control the array of source and launch light to the white reference；
Obtain the corresponding view data of the white reference；
According to described image data, the present intensity value of the array of source is determined.
3. the automatic compensating method of the light-source brightness of imageing sensor as claimed in claim 1, it is characterised in that described in institute
State in the initialization procedure of imageing sensor, before obtaining the brightness value of the array of source, the light source of described image sensor
The automatic compensating method of brightness also includes：
Obtain the initial luma values of the array of source；Wherein, the initial luma values go out for identifying described image sensor
The brightness value of array of source during factory.
4. the automatic compensating method of the light-source brightness of imageing sensor as claimed in claim 3, it is characterised in that described default
The corresponding minimum luminance value of scope is the difference of the initial luma values and predetermined luminance elementary errors amount；The preset range is corresponding most
Big brightness value is the initial luma values and the predetermined luminance elementary errors amount sum.
5. the automatic compensating method of the light-source brightness of imageing sensor as claimed in claim 4, it is characterised in that if the institute
Present intensity value is stated not in the preset range, the present intensity value is adjusted, until the present intensity value exists
Specifically include till in the preset range：
If the present intensity value increases the present intensity value, directly less than the corresponding minimum luminance value of the preset range
Being in the preset range to the present intensity value；
If the present intensity value reduces the present intensity value, directly more than the corresponding maximum brightness value of the preset range
Being in the preset range to the present intensity value.
6. a kind of autocompensation installation of the light-source brightness of imageing sensor, described image sensor include array of source and photoelectricity
Sensor array；The array of source is used for launching light to object to be scanned, and the photosensor arrays are used for will be described
The optical signal that object to be scanned is reflected back is exported to processing module after being converted to the corresponding signal of telecommunication, so that the processing module pair
The signal of telecommunication is processed, and obtains the view data of the object to be scanned；Characterized in that, the light of described image sensor
The autocompensation installation of source brightness includes：
Acquisition module, for, in the initialization procedure of described image sensor, obtaining the present intensity value of the array of source；
Whether judge module, for judging the present intensity value in preset range；
Adjustment module, if for the present intensity value not in preset range, being adjusted to the present intensity value, until
Till the present intensity value is in the preset range.
7. the autocompensation installation of the light-source brightness of imageing sensor as claimed in claim 6, it is characterised in that the acquisition
Module is specifically included：
Control unit, in the initialization procedure of described image sensor, controlling the array of source to the white reference
Transmitting light；
Acquiring unit, for obtaining the corresponding view data of the white reference；
Determining unit, for according to described image data, determining the present intensity value of the array of source.
8. the autocompensation installation of the light-source brightness of imageing sensor as claimed in claim 6, it is characterised in that the acquisition
Module is additionally operable to the initial luma values for obtaining the array of source；Wherein, the initial luma values are used for identifying described image biography
The brightness value of array of source when sensor dispatches from the factory.
9. the autocompensation installation of the light-source brightness of imageing sensor as claimed in claim 8, it is characterised in that described default
The corresponding minimum luminance value of scope is the difference of the initial luma values and predetermined luminance elementary errors amount；The preset range is corresponding most
Big brightness value is the initial luma values and the predetermined luminance elementary errors amount sum.
10. the autocompensation installation of the light-source brightness of imageing sensor as claimed in claim 9, it is characterised in that the tune
Section module is specifically included：
Unit is tuned up, if for the present intensity value less than the corresponding minimum luminance value of the preset range, increase is described
Present intensity value, till the present intensity value is in the preset range；
Turn unit down, if for the present intensity value more than the corresponding maximum brightness value of the preset range, reducing described
Present intensity value, till the present intensity value is in the preset range.
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| CN107147901A (en) * | 2017-05-02 | 2017-09-08 | 深圳怡化电脑股份有限公司 | A kind of sensor calibration method, device, equipment and storage medium |
| CN114867167A (en) * | 2022-05-24 | 2022-08-05 | 中科芯集成电路有限公司 | Automatic brightness adjusting method for infrared light source |
| CN115914847A (en) * | 2022-12-19 | 2023-04-04 | 浙江大华技术股份有限公司 | Image processing method and device |
| CN116298804A (en) * | 2023-03-28 | 2023-06-23 | 杭州加速科技有限公司 | Optical chip test light source calibration method, device and optical chip test system |
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