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WO2017061289A1 - Dispositif de traitement à usage endoscopique et procédé de traitement de calculs - Google Patents

Dispositif de traitement à usage endoscopique et procédé de traitement de calculs Download PDF

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Publication number
WO2017061289A1
WO2017061289A1 PCT/JP2016/078241 JP2016078241W WO2017061289A1 WO 2017061289 A1 WO2017061289 A1 WO 2017061289A1 JP 2016078241 W JP2016078241 W JP 2016078241W WO 2017061289 A1 WO2017061289 A1 WO 2017061289A1
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WIPO (PCT)
Prior art keywords
endoscope
filter
processing
image
imaging device
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/078241
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English (en)
Japanese (ja)
Inventor
幸子 大倉
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Olympus Corp
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Olympus Corp
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Filing date
Publication date
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Publication of WO2017061289A1 publication Critical patent/WO2017061289A1/fr
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Definitions

  • the present invention relates to an endoscope processing apparatus and an arithmetic processing method.
  • an endoscope system is used for observation inside a subject.
  • Various endoscopes are connected to a processor that processes an image signal picked up by an endoscope if the standard of a connection connector or a transmission system matches the standard of the endoscope.
  • the processor may be connected to a camera head that combines a fiberscope that uses optical fibers.
  • a fiber bundle made up of multiple optical fibers is used as an image guide that transmits the optical image formed at the tip to the rear end, and the camera head is connected to the eyepiece of the fiberscope.
  • the imaging device of the camera head captures an optical image transmitted by the image guide fiber bundle to generate an image signal, and outputs the generated image signal to the processor.
  • the present invention has been made in view of the above, and an object of the present invention is to provide an endoscope processing apparatus and an arithmetic processing method that perform moire removal processing only when moire removal processing is necessary.
  • an endoscope processing apparatus transmits at least an optical image formed by an objective optical system at the distal end of the endoscope to the rear end side.
  • a first imaging device including an image guide fiber bundle and having an imaging device that captures the optical image transmitted by the image guide fiber bundle and generates an image signal; and a second imaging device different from the first imaging device Is an endoscope processing apparatus that is configured to be detachable exclusively and that processes the image signal, and performs different computations depending on the type of endoscope attached to the endoscope processing apparatus.
  • a filter processing unit that performs a filter operation with a coefficient is provided.
  • the filter processing unit when the attached endoscope is the first imaging device, the filter processing unit performs low-pass filter processing on the image signal.
  • a filter coefficient is set in the filter processing unit as the coefficient of the calculation, and the filter processing unit performs enhancement processing on the image signal when the attached endoscope is the second imaging device.
  • a filter coefficient setting unit that sets the filter coefficient as a coefficient of the calculation in the filter processing unit.
  • the filter coefficient setting unit may be any one of a plurality of low-pass filter coefficients having different threshold values in the low-pass filter process as a filter coefficient for performing the low-pass filter process. Is set in the filter processing unit.
  • the endoscope processing apparatus further includes an input unit that receives input of intensity instruction information that indicates the intensity of the low-pass filter process, and the filter coefficient setting unit has a threshold value of the low-pass filter process.
  • the filter coefficient setting unit has a threshold value of the low-pass filter process.
  • the endoscope processing device includes an identification unit that identifies whether the imaging device mounted on the endoscope processing device is the first imaging device or the second imaging device.
  • the filter coefficient setting unit sets a filter coefficient based on the identification result in the identification unit in the filter processing unit.
  • the arithmetic processing method includes an image guide fiber bundle that transmits at least an optical image formed by the objective optical system at the distal end of the endoscope to the rear end side, and is transmitted by the image guide fiber bundle.
  • a first imaging device having an imaging device that captures the optical image and generates an image signal, and a second imaging device different from the first imaging device are configured to be detachable exclusively, and the image signal Comprising:
  • At least an image guide fiber bundle that transmits an optical image formed by the objective optical system at the distal end of the endoscope to the rear end side is provided, and an optical image transmitted by the image guide fiber bundle is captured.
  • a first imaging device having an imaging element that generates an image signal and a second imaging device that is different from the first imaging device are mounted on an endoscope processing device that is exclusively detachable.
  • FIG. 1 is a schematic diagram showing a schematic configuration of an endoscope system according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram illustrating a schematic configuration of the endoscope system according to the embodiment of the present invention.
  • FIG. 3 is a flowchart showing a processing procedure of filter coefficient setting processing in the processor shown in FIG.
  • FIG. 4 is a diagram showing a processing procedure of the filter coefficient setting process shown in FIG.
  • FIG. 5 is a diagram showing another processing procedure of the filter coefficient setting process shown in FIG.
  • FIG. 6 is a schematic diagram illustrating a schematic configuration of the endoscope system according to the second modification of the embodiment.
  • FIG. 1 and 2 are schematic views showing a schematic configuration of an endoscope system according to an embodiment of the present invention.
  • an endoscope system 1 includes a first endoscope 2A (first imaging device) and a second endoscope as endoscopes for introduction into a subject. Any one of the endoscope 2B (second imaging device) can be connected to the processor 3 (endoscopic processing device) and transmitted from the attached first endoscope 2A or second endoscope 2B.
  • a processor 3 that performs predetermined image processing on the image signal and a display device 4 that displays an image corresponding to the image signal from the first endoscope 2A or the second endoscope 2B are provided.
  • Both the first endoscope 2A and the second endoscope 2B are introduced into the subject, and image the inside of the subject to generate an image signal in the subject.
  • the first endoscope 2A includes an optical endoscope using a method of transmitting an optical image with an optical fiber bundle, and a camera head corresponding to the optical endoscope.
  • the first endoscope 2A includes a camera head 21A and an image guide fiber bundle 22A that transmits an optical image formed by the objective optical system at the distal end of the endoscope to the rear end side.
  • the camera head 21A is an image sensor 23A that captures an optical image that is transmitted by the image guide fiber bundle 22A and is output from the eyepiece, and generates an image signal.
  • the information indicates that the camera head 21A is compatible with the fiber bundle.
  • a memory 24A for storing various types of identification information of the first endoscope 2A.
  • the image pickup device 23A is a CMOS image pickup device or a CCD image pickup device.
  • a plurality of pixels that receive light from a subject irradiated with light on a light receiving surface and photoelectrically convert the received light to generate an image pickup signal is a matrix. Arranged.
  • the imaging element 23A performs noise removal processing, clamping processing, and A / D conversion processing on the imaging signal (analog) generated by the plurality of pixels, and outputs the imaging signal (digital) to the processor 3 via the electric cable. .
  • the second endoscope 2B is a so-called electronic endoscope in which an image pickup device 23B is provided at the distal end of the insertion portion 22B, and an operation portion 21B provided with an operation switch (not shown) and the like, and an image pickup device 23B provided at the distal end. Insertion portion 22B.
  • the image pickup device 23B is a CMOS image pickup device or a CCD image pickup device like the image pickup device 23A.
  • the operation unit 21B is provided with a memory 24B that stores various types of identification information of the second endoscope 2B including information indicating that the second endoscope 2B is a so-called electronic endoscope.
  • the processor 3 is configured such that the first endoscope 2A and the second endoscope 2B are exclusively detachably attached, and an image signal transmitted from the attached first endoscope 2A or the second endoscope 2B. Is subjected to predetermined image processing to generate an in-vivo image.
  • the processor 3 causes the display device 4 to display and output the generated in-vivo image.
  • the processor 3 includes an image processing unit 31, a control unit 32, a storage unit 33, and an input unit 34. Note that the processor 3 includes a light source (not shown) for supplying illumination light to the attached endoscope.
  • the image processing unit 31 performs predetermined image processing on the image signal output from the image sensor of the attached endoscope.
  • the image processing unit 31 performs an optical black (OB) subtraction process, a demosaicing process, a white balance (WB) adjustment process, an electronic zoom process, an image on an image signal (digital) output from the image sensor of the attached endoscope.
  • An image signal obtained by performing enhancement processing, mask processing, on-screen display (OSD) processing, display image conversion processing, and the like is output.
  • the image processing unit 31 includes an image enhancement unit 312 that performs image enhancement processing, a first image processing unit 311 that performs image processing prior to image enhancement processing, and a second image processing unit that performs image processing subsequent to image enhancement processing. 314.
  • the image enhancement unit 312 includes a filter 313 (filter processing unit) that performs a filter operation with different calculation coefficients depending on the type of the endoscope attached to the processor 3.
  • the filter 313 performs filter operation (matrix operation) on the pixel block of n ⁇ m pixels (n and m are positive integers) centered on the pixel of interest according to the set coefficient, thereby The processing result is calculated, and the calculation is performed for all pixels while shifting the pixel position of interest one pixel at a time.
  • the filter 313 performs image enhancement filter processing when a coefficient for image enhancement is set, and LPF processing (moire removal) when a coefficient for low-pass filter (LPF) processing is set. Process).
  • the control unit 32 is realized using a CPU or the like.
  • the control unit 32 controls the processing operation of each part of the processor 3 by transferring instruction information and data to each component of the processor 3.
  • the control unit 32 connects to the imaging element 23A and the memory 24A of the first endoscope 2A via each cable, and performs imaging. It also controls the element 23A and the memory 24A.
  • the control unit 32 is connected to the imaging element 23B and the memory 24B of the second endoscope 2B via each cable, and performs imaging.
  • the device 23B and the memory 24B are also controlled.
  • the control unit 32 includes an endoscope identification unit 321 and a filter coefficient setting unit 322.
  • the endoscope identification unit 321 identifies whether the endoscope mounted on the processor 3 is the first endoscope 2A or the second endoscope 2B.
  • the processor 3 identifies the type of the attached endoscope by performing communication processing with the endoscope attached to the processor 3.
  • the endoscope identification unit 321 acquires identification information Ia (see FIG. 1) of the first endoscope 2A by performing communication processing with the memory 24A of the first endoscope 2A.
  • the endoscope identification unit 321 acquires the identification information Ib (see FIG. 2) of the second endoscope 2B by performing communication processing with the memory 24B of the second endoscope 2B.
  • the endoscope identifying unit 321 identifies whether the endoscope connected to the processor 3 is the first endoscope 2A or the second endoscope 2B based on the acquired identification information.
  • the filter coefficient setting unit 322 sets a filter coefficient based on the identification result in the endoscope identification unit 321 in the filter 313 of the image enhancement unit 312.
  • the filter coefficient setting unit 322 filters the filter coefficient Pa (see FIG. 1) for the filter 313 to perform LPF processing on the image signal.
  • the filter coefficient setting unit 322 sets a filter coefficient Pb for the filter 313 to perform enhancement processing on the image signal in the filter 313.
  • the storage unit 33 is realized by using a volatile memory or a nonvolatile memory, and stores various programs for operating the processor 3.
  • the storage unit 33 temporarily stores information being processed by the processor 3.
  • the storage unit 33 stores an image signal or the like output from an endoscope connected to the processor 3.
  • the storage unit 33 may be configured using a memory card or the like attached from the outside of the processor 3.
  • the storage unit 33 is provided with a filter coefficient storage unit 331 and stores filter coefficients respectively corresponding to various types of endoscopes.
  • the filter coefficient setting unit 322 executes parameter read instructions Ta and Tb on the filter coefficient storage unit 331 in accordance with the identification result in the endoscope identification unit 321, so that the filter coefficient Pa or the filter coefficient Pa or Read the filter coefficient Pb.
  • the filter coefficient setting unit 322 sets the read filter coefficient Pa or filter coefficient Pb in the filter 313.
  • the input unit 34 receives input of various instruction information, and inputs the received various instruction information to the control unit 32.
  • the input unit 34 receives input of patient data (for example, ID, date of birth, name, etc.) related to a patient as a subject, and data such as examination contents.
  • the input unit 34 may be an operation device such as a button or a touch panel provided on the front panel of the processor 3, or may be realized using an operation device such as a mouse and a keyboard connected to the processor 3.
  • the switch etc. which were provided in the holding part of the made endoscope may be sufficient.
  • the input unit 34 may be one in which instruction information is input by remote operation from a portable terminal device such as a tablet terminal device.
  • the display device 4 is configured using a display or the like using liquid crystal or organic EL.
  • the display device 4 displays various information including a display image output from the processor 3.
  • FIG. 3 is a flowchart showing a processing procedure of filter coefficient setting processing in the processor 3.
  • the control unit 32 determines whether or not an endoscope is attached to the processor 3 (step S1). When determining that the endoscope is not attached to the processor 3 (step S1: No), the control unit 32 returns to step S1 and performs the determination process of step S1.
  • the control unit 32 determines that the endoscope is attached to the processor 3 (step S1: Yes)
  • the endoscope identification unit 321 indicates that the endoscope attached to the processor 3 is the first endoscope 2A.
  • the second endoscope 2B are subjected to endoscope identification processing (step S2), and the identification result is output to the filter coefficient setting unit 322.
  • the filter coefficient setting unit 322 performs a filter coefficient setting process for setting the filter coefficient based on the identification result in the endoscope identification unit 321 in the filter 313 (step S3).
  • the filter 313 of the image enhancement unit 312 performs a filter process for performing a filter operation on the input image signal in accordance with the set filter coefficient (step S4). Therefore, in step S ⁇ b> 4, the filter 313 performs a filter operation using different calculation coefficients depending on the type of the endoscope attached to the processor 3.
  • FIG. 4 is a diagram showing a processing procedure of the filter coefficient setting process shown in FIG.
  • the filter coefficient setting unit 322 determines whether the type of endoscope attached to the processor 3 is the first endoscope 2A or the second endoscope based on the identification result of the endoscope identification unit 321. It is determined which is the endoscope 2B (step S11).
  • the filter coefficient setting unit 322 determines that the type of the endoscope attached to the processor 3 is the first endoscope 2A (step S11: first endoscope)
  • the filter coefficient storage unit 331 receives the LPF.
  • a filter coefficient Pa for processing is acquired (step S12).
  • the filter coefficient setting unit 322 determines that the type of the endoscope attached to the processor 3 is the second endoscope 2B (step S11: second endoscope)
  • the filter coefficient setting unit 322 emphasizes from the filter coefficient storage unit 331.
  • a filter coefficient Pb for processing is acquired (step S13).
  • the filter coefficient setting unit 322 sets the acquired coefficient in the filter 313 (step S14), ends the filter coefficient setting process, and returns to the main routine of FIG.
  • the endoscope connected to the processor 3 includes the first endoscope 2A having a fiberscope-compatible camera head, and the second endoscope not compatible with the fiberscope.
  • the filter 313 that performs the filter operation with different calculation coefficients depending on whether it is 2B or not, a processor that can execute the moire removal processing only when the moire removal processing is necessary can be realized.
  • the filter coefficient Pa for LPF processing is set in the filter 313, and the fiberscope
  • the filter coefficient Pb for enhancement processing is set in the filter 313. Therefore, according to the present embodiment, the moiré removal processing is performed according to the type of the endoscope by switching only the filter coefficient of the filter without changing the filter for LPF processing. And image enhancement processing can be executed exclusively.
  • the input unit 34 can accept input of strength instruction information for instructing the strength of LPF processing in accordance with a user operation.
  • the threshold value (threshold value) of the cutoff frequency in LPF processing is determined according to the strength of LPF processing.
  • the filter coefficient storage unit 331 stores a plurality of filter coefficients for LPF processing at least having different cutoff frequency thresholds according to the strength of the LPF processing. For example, when the intensity of the LPF process is high, a value lower than the threshold of the cut-off frequency used when the intensity of the LPF process is weak is used as the cut-off frequency threshold of the filter coefficients for the LPF process. It is stored in the coefficient storage unit 331.
  • the filter coefficient setting unit 322 includes a plurality of LPF coefficients having different cutoff frequency threshold values in the LPF process corresponding to the intensity indicated by the intensity instruction information input from the input unit 34 as filter coefficients for performing the LPF process. Either one is set in the filter 313.
  • FIG. 5 is a diagram showing another processing procedure of the filter coefficient setting process shown in FIG.
  • Steps S21 and 25 shown in FIG. 5 are steps S11 and 13 shown in FIG.
  • the filter coefficient setting unit 322 determines that the type of the endoscope attached to the processor 3 is the first endoscope 2A (step S21: first endoscope)
  • the filter coefficient setting unit 322 is input from the input unit 34.
  • it is determined whether to instruct stronger or weaker as the intensity of the LPF process (step S22).
  • the filter coefficient setting unit 322 determines to instruct to increase the intensity of the LPF process (step S22: higher)
  • the filter coefficient setting unit 322 acquires the filter coefficient for the LPF enhancement process from the filter coefficient storage unit 331 (step S23).
  • step S22 determines to instruct weakening as the intensity of the LPF process (step S22: weak)
  • the filter coefficient setting unit 322 acquires the filter coefficient for the LPF weakening process from the filter coefficient storage unit 331 (step S24).
  • Step S26 shown in FIG. 5 is step S14 shown in FIG.
  • the filter coefficient setting unit 322 can set the LPF coefficient including the cutoff frequency threshold corresponding to the intensity indicated by the intensity instruction information input from the input unit 34 in the filter 313. You may do it.
  • FIG. 6 is a schematic diagram illustrating a schematic configuration of the endoscope system according to the second modification of the embodiment.
  • the filter coefficient 125 ⁇ / b> A used in the filter process for the image signal captured by the first endoscope 12 ⁇ / b> A is stored in the memory 124 ⁇ / b> A in the camera head 121 ⁇ / b> A of the first endoscope 12 ⁇ / b> A. It is remembered. Similarly, the memory 124B in the operation unit 121B of the second endoscope 12B stores a filter coefficient 125B used at the time of filter processing for the image signal captured by the second endoscope 12B.
  • the control unit 132 of the processor 103 performs identification processing of the endoscope from the memory 124A or the memory 124B by performing communication processing with the memory 124A or the memory 124B of the connected endoscope when the endoscope is connected. Together with the information, the filter coefficient 125A or the filter coefficient 125B is read out.
  • the filter coefficient setting unit 1322 sets the filter coefficient read by the control unit 132 from the memory 124A or the memory 124B in the filter 313.
  • the endoscope identification unit 321 shown in FIG. 1 can be deleted, and the endoscope identification process (steps) in the processing procedure up to the setting of the filter coefficient shown in FIG. S2) becomes unnecessary.
  • the first endoscope 2A may be a hybrid endoscope that captures an optical image transmitted by an optical fiber with an image sensor provided at the optical fiber base end.
  • the second endoscope 2B may be a soft or hard endoscope with an insertion portion. Alternatively, the second endoscope 2B may have a camera head that is not assumed to be connected to an optical endoscope.
  • the processors 3 and 103 may be configured such that the processor and the light source device are separate.
  • an execution program for each process executed by the processors 3 and 103 is an installable format or executable file, and is a computer such as a CD-ROM, flexible disk, CD-R, or DVD. It may be configured to be provided by being recorded on a recording medium readable by the Internet, or may be configured to be provided by being stored on a computer connected to a network such as the Internet and downloaded via the network. .

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Abstract

L'objet de la présente invention est de fournir un dispositif de traitement à usage endoscopique et un procédé de traitement de calculs permettant de mettre en œuvre un traitement d'élimination de moirés uniquement si un traitement d'élimination de moirés est nécessaire. L'invention concerne un dispositif de traitement à usage endoscopique permettant de traiter des signaux d'image : dans lequel un processeur 3 comprend au moins un faisceau de fibres de guidage d'image permettant de transmettre une image optique formée par un système optique d'objectif au niveau de l'extrémité distale d'un endoscope jusqu'à son extrémité de base; et dans lequel un premier endoscope 2A et un second endoscope 2B sont conçus de sorte à être exclusivement amovibles, de tels endoscopes comprenant chacun un élément de capture d'image permettant de capturer l'image optique transmise par le faisceau de fibres de guidage d'image et générant ainsi un signal d'image. Ledit dispositif de traitement à usage endoscopique est pourvu d'un filtre 313 qui effectue un calcul de filtrage à l'aide d'un coefficient de calcul différent en fonction du type d'endoscope monté sur le processeur 3.
PCT/JP2016/078241 2015-10-08 2016-09-26 Dispositif de traitement à usage endoscopique et procédé de traitement de calculs Ceased WO2017061289A1 (fr)

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JP2015-200013 2015-10-08

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01297044A (ja) * 1988-02-23 1989-11-30 Olympus Optical Co Ltd 電子内視鏡装置
JPH0329636A (ja) * 1989-03-22 1991-02-07 Olympus Optical Co Ltd 電子式内視鏡装置
JP2000350193A (ja) * 1999-06-03 2000-12-15 Olympus Optical Co Ltd 画像処理装置及び内視鏡装置
JP2001208986A (ja) * 2000-01-24 2001-08-03 Olympus Optical Co Ltd 内視鏡用光源装置
JP2003204932A (ja) * 2002-01-11 2003-07-22 Olympus Optical Co Ltd 内視鏡撮像システム
WO2015025697A1 (fr) * 2013-08-20 2015-02-26 オリンパスメディカルシステムズ株式会社 Système d'endoscope et procédé de fonctionnement de système d'endoscope

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01297044A (ja) * 1988-02-23 1989-11-30 Olympus Optical Co Ltd 電子内視鏡装置
JPH0329636A (ja) * 1989-03-22 1991-02-07 Olympus Optical Co Ltd 電子式内視鏡装置
JP2000350193A (ja) * 1999-06-03 2000-12-15 Olympus Optical Co Ltd 画像処理装置及び内視鏡装置
JP2001208986A (ja) * 2000-01-24 2001-08-03 Olympus Optical Co Ltd 内視鏡用光源装置
JP2003204932A (ja) * 2002-01-11 2003-07-22 Olympus Optical Co Ltd 内視鏡撮像システム
WO2015025697A1 (fr) * 2013-08-20 2015-02-26 オリンパスメディカルシステムズ株式会社 Système d'endoscope et procédé de fonctionnement de système d'endoscope

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