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WO2019033289A1 - Système et procédé servant à étendre le champ de vision d'une caméra vidéo - Google Patents

Système et procédé servant à étendre le champ de vision d'une caméra vidéo Download PDF

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Publication number
WO2019033289A1
WO2019033289A1 PCT/CN2017/097618 CN2017097618W WO2019033289A1 WO 2019033289 A1 WO2019033289 A1 WO 2019033289A1 CN 2017097618 W CN2017097618 W CN 2017097618W WO 2019033289 A1 WO2019033289 A1 WO 2019033289A1
Authority
WO
WIPO (PCT)
Prior art keywords
module
view
field
lens module
expanding
Prior art date
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/CN2017/097618
Other languages
English (en)
Chinese (zh)
Inventor
杨敏
陈继健
黎颂民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SKY LIGHT ELECTRONIC (SHENZHEN) Ltd Corp
Original Assignee
SKY LIGHT ELECTRONIC (SHENZHEN) Ltd Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SKY LIGHT ELECTRONIC (SHENZHEN) Ltd Corp filed Critical SKY LIGHT ELECTRONIC (SHENZHEN) Ltd Corp
Priority to PCT/CN2017/097618 priority Critical patent/WO2019033289A1/fr
Publication of WO2019033289A1 publication Critical patent/WO2019033289A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules

Definitions

  • the present invention relates to the field of imaging, and more particularly to a system and method for expanding the field of view of a camera image.
  • the fisheye lens technology requires video distortion correction at the software level. It is technically difficult to achieve better results, and the fisheye lens is expensive; The way the lens is captured significantly increases the hardware cost, and the software's video seamless bonding algorithm is more complicated.
  • the network camera realized by the above two methods is basically a high-end product, and is often used in special occasions that are not sensitive to price, which greatly limits the field of use and environment.
  • the present invention adopts the following technical solutions:
  • a system for expanding the field of view of a camera image The lens module, the detecting module, the driving module, the micro controller and the power source; the lens module, the detecting module, the driving module and the power source are all connected with the microcontroller;
  • the lens module is configured to capture image information
  • the detecting module is configured to detect whether the object to be photographed exceeds a narrow side field of view of the shooting area of the lens module;
  • the driving module is configured to drive the rotation of the lens module.
  • the detection module is a VA detector or an image sensor.
  • the driving module is a motor, and the motor is provided with a limit switch, and the limit switch has a limiting angle of 0°-180°.
  • the motor is a stepping motor.
  • the detecting module detects whether the object to be photographed exceeds the narrow side field of the camera image area of the camera, If yes, go to S2, if not, go to S3;
  • the lens module is rotated by 90°
  • the system powers up and the lens module starts working.
  • the imaging surface of the lens module is rectangular.
  • the S1 further includes the following specific steps:
  • the detecting module sends a signal to the microcontroller that the object is beyond a narrow field of view of the imaging area;
  • the microcontroller issues an instruction to rotate the lens module to the driving module.
  • the S2 includes the lens module rotating 90°, touching the limit switch, the microcontroller receiving the level change signal of the driving module, and the driving module stops driving the lens module to rotate.
  • the S2 further includes the following steps:
  • S21 Start a video image processing thread to switch between a narrow side and a long side of the video pixel.
  • the lens module, the detection module, the driving module, and the power source are all connected to the microcontroller, and the driving module is used to drive the rotation of the lens module;
  • the lens module can be automatically rotated according to the movement dynamics of the object to be photographed, and the narrow side and long side switching of the video pixel can be adjusted.
  • the purpose of increasing the video viewable angle in the vertical or horizontal direction according to the scene is extended, the monitoring angle of the camera is expanded, and the use environment and the use field of the common network camera are improved.
  • FIG. 1 is a block diagram of a system circuit for expanding a field of view of a camera image according to the present invention
  • FIG. 2 is a flow chart of a method for expanding a field of view of a camera image according to the present invention
  • Figure 3 is a flow chart of the detailed steps of Figure 2;
  • Figure 4 is a schematic view showing the relationship between rotation of A and B in a specific embodiment
  • Figure 5 is a schematic illustration of the operational rotation of the image sensor in a particular embodiment.
  • FIG. 3 a specific embodiment of the present invention, a system for expanding a camera image field of view
  • the lens module 10 is configured to capture image information
  • the detecting module 20 is configured to detect whether the object to be photographed exceeds the narrow side field of the shooting area of the lens module 10;
  • the driving module 30 is configured to drive the rotation of the lens module 10.
  • the detection module 20 is a VA detector or an image sensor.
  • the driving module 30 is a motor, and the motor is provided with a limit switch.
  • the limit angle of the limit switch is 0°-180°; when the lens module 10 is rotated 90°, the motor limit switch is triggered, then The motor drive level disappears and the motor stops.
  • the motor is a stepper motor.
  • the working principle of the camera is that the switching signal of the lens module is triggered by the camera main control system.
  • the video camera has a video analysis function.
  • the moving object such as the human body
  • the object image becomes larger and larger, and the camera may exceed the narrow side of the camera in the vertical direction.
  • the video signal analysis (VA) result of the camera triggers the signal of the above-mentioned lens module switching, and the lens module rotates to continuously monitor the movement of the object or other subsequent actions in the vertical direction.
  • the VA triggers the lens module to perform the rotation switching between the narrow side and the long side direction, so that a wide range of monitoring can be performed in the horizontal direction.
  • the present invention also discloses a method for expanding the field of view of a camera image, comprising the following steps:
  • the detecting module detects whether the object to be photographed exceeds the narrow side field of the camera image area of the camera, If yes, go to S2, if not, go to S3;
  • the lens module is rotated by 90°
  • S1 also includes the following contents: System Power-on, the lens module starts working.
  • the shooting surface of the lens module is rectangular.
  • the detecting module sends a signal to the microcontroller that the object is beyond a narrow field of view of the imaging area;
  • the microcontroller issues an instruction to rotate the lens module to the driving module.
  • S2 includes the lens module rotated by 90°, touches the limit switch, the microcontroller receives the level change signal of the drive module, and the drive module stops driving the lens module to rotate.
  • the S2 further includes the following steps: S21: Start a video image processing thread to switch between a narrow side and a long side of the video pixel.
  • the synchronization signal after the VA detector issues a rotation signal of the trigger lens module, the synchronization signal must be sent to the thread of the video processing, and when the processing thread receives the synchronization signal, the video image is transformed in the narrow side and the long side direction, and the pixel is converted.
  • the conversion causes the output video stream of the network camera to still maintain the correct output when the video source is rotated by 90°. The user sees only the change in the length and width of the video image.
  • FIG. 4 As shown, the image is rotated 90° clockwise, and the pixels in each frame must be transformed to display the image correctly.
  • Pixel transformation has the following relationship (A-->B), A and B are regarded as two-dimensional matrix, and mathematically, the conversion relationship is to obtain the transposed matrix B of A;
  • the image can be rotated 180° clockwise, and the image is stitched into an image with a circumference equal to the long border.
  • the principle and processing of the pixel transformation in each frame are the same as described above, and are used for static in most cases.
  • it is mainly used to improve the sharpness of the captured image, and to make maximum use of the physical pixels of the image sensor, graphics As shown in Figure C, Figure C (for the sake of clarity, the image sensor's length and width dimensions are non-proportional exaggerated):
  • the pixel that can be utilized most is the image sensor.
  • the pixel itself, in some 360° or panoramic scenes, the effective pixels are only the part shown by the circle in the D diagram of Figure 5; but according to the implementation in this example, the largest available pixel is shown in the figure. 5 E map The circle is shown in the section.
  • the camera of the present invention is installed at the doorway for monitoring the environment around the porch and the accessory; when the courier carrying the package enters the surveillance field of the camera from a distance, the courier approaches the doorway and prepares to ring the doorbell.
  • the VA detector detects that the courier's body overflows in the narrow side of the image, and automatically switches between the narrow side and the long side; through remote voice and video
  • the courier can place the package at the designated location on the doorway for the owner to remotely view and monitor through the IPC; the courier item is completely in the IPC video surveillance, and the item can be left in the advanced function of the camera or Item lost alarm.
  • the invention can automatically rotate the lens module according to the movement dynamics of the object to be photographed, and adjust the narrow side and the long side of the video pixel to switch according to the scene, so as to increase the video in the vertical or horizontal direction according to the scene.
  • the purpose of the perspective is to expand the surveillance perspective of the camera and improve the use environment and use of the common network camera.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Devices (AREA)

Abstract

La présente invention concerne un système et un procédé servant à étendre le champ de vision d'une caméra vidéo. Le système servant à étendre un champ de vision d'une caméra vidéo comprend un module de lentille, un module de détection, un module d'entraînement, un microcontrôleur et une source d'alimentation. Le module de lentille, le module de détection, le module d'entraînement et le module de puissance sont tous connectés au microcontrôleur. Le module de lentille est configuré pour capturer des informations d'image. Le module de détection est configuré pour détecter si un objet devant être capturé dépasse un champ de vision horizontal d'une zone de capture d'image du module de lentille. Le module d'entraînement est configuré pour entraîner la rotation du module de lentille. La présente invention peut faire tourner automatiquement un module de lentille en fonction de la dynamique de mouvement d'un objet qui est capturé et faire commuter les bords horizontaux et les bords verticaux de pixels vidéo sans augmenter la complexité d'un algorithme vidéo, de façon à augmenter l'angle de visualisation de vidéos dans une orientation verticale ou horizontale selon la scène qui est filmée, étendre un angle de visualisation de surveillance d'une caméra vidéo, et élargir des environnements d'utilisation et des champs d'utilisation de webcam communes.
PCT/CN2017/097618 2017-08-16 2017-08-16 Système et procédé servant à étendre le champ de vision d'une caméra vidéo Ceased WO2019033289A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/097618 WO2019033289A1 (fr) 2017-08-16 2017-08-16 Système et procédé servant à étendre le champ de vision d'une caméra vidéo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/097618 WO2019033289A1 (fr) 2017-08-16 2017-08-16 Système et procédé servant à étendre le champ de vision d'une caméra vidéo

Publications (1)

Publication Number Publication Date
WO2019033289A1 true WO2019033289A1 (fr) 2019-02-21

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PCT/CN2017/097618 Ceased WO2019033289A1 (fr) 2017-08-16 2017-08-16 Système et procédé servant à étendre le champ de vision d'une caméra vidéo

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118828237A (zh) * 2024-09-19 2024-10-22 浙江大华技术股份有限公司 图像的拼接方法、装置、摄像设备、存储介质及电子装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100207774A1 (en) * 2009-02-16 2010-08-19 Research In Motion Limited Controllably Rotatable Camera in Handheld Electronic Device
CN104822027A (zh) * 2015-04-30 2015-08-05 华为技术有限公司 一种视讯装置及其控制方法
CN105245778A (zh) * 2015-09-30 2016-01-13 小米科技有限责任公司 摄像头旋转控制方法及装置
CN106060527A (zh) * 2016-08-01 2016-10-26 北京小鸟看看科技有限公司 一种扩展双目相机定位范围的方法和装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100207774A1 (en) * 2009-02-16 2010-08-19 Research In Motion Limited Controllably Rotatable Camera in Handheld Electronic Device
CN104822027A (zh) * 2015-04-30 2015-08-05 华为技术有限公司 一种视讯装置及其控制方法
CN105245778A (zh) * 2015-09-30 2016-01-13 小米科技有限责任公司 摄像头旋转控制方法及装置
CN106060527A (zh) * 2016-08-01 2016-10-26 北京小鸟看看科技有限公司 一种扩展双目相机定位范围的方法和装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118828237A (zh) * 2024-09-19 2024-10-22 浙江大华技术股份有限公司 图像的拼接方法、装置、摄像设备、存储介质及电子装置

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