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Exposure adjusting method and device, camera shooting control device and monitoring camera

An adjustment method and a technology for exposure parameters, which are applied in the field of camera control devices and surveillance cameras, and can solve problems such as reducing the frame rate of video frames.

Active Publication Date: 2020-12-01
HANGZHOU HIKVISION DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When capturing a snapshot frame each time, the working mode of the light sensor is usually switched, and the switching of the working mode of the light sensor will cause continuous multi-frame interruption in the code stream, thereby reducing the frame rate of the video frame in the code stream

Method used

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  • Exposure adjusting method and device, camera shooting control device and monitoring camera
  • Exposure adjusting method and device, camera shooting control device and monitoring camera
  • Exposure adjusting method and device, camera shooting control device and monitoring camera

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Embodiment Construction

[0079] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0080] figure 1 It is a schematic diagram of a frame structure of a monitoring camera in an embodiment. See figure 1 , in one embodiment, a surveillance camera may include a camera 10 , an optical sensor 20 , a driving device 30 , and a processor 40 .

[0081] The processor 40 is used to output the exposure parameters to the driving device 30 .

[0082] The driving device 30 may be a logic device such as FPGA (Field-Programmable Gate Array, Field Programmable Gate Array), which is used to control the light sensor 20 according to the exposure parameters (video frame exposure parameters and snapshot frame exposure parameters) provided by the processor 40. Expose and image the scene within the field of view of the camera 10 . For example, the camer...

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Abstract

The invention provides an exposure adjusting method, an exposure adjusting device, a camera shooting control device and a monitoring camera. According to the invention, the snapshot frame can be obtained by taking the frame from the video frame forming the code stream; moreover, the exposure control of the snapshot frame can be realized in a mode independent of the exposure control of the video frame, and the exposure difference of the snapshot frame relative to the video frame is compensated, so that the working mode of the optical sensor does not need to be switched, and the photometry doesnot need to be started before snapshot. Therefore, each snapshot frame acquisition only forms a single frame breakpoint in the code stream formed by the video frames, so that compared with the multi-frame interruption caused by the switching of the working mode of the optical sensor, the above embodiment can reduce the influence of snapshot on the frame rate of the video frames to ensure the fluency of the code stream on the basis of taking snapshot into consideration. Moreover, the photometry does not need to be started during snapshot, so that the jerking feeling of light flickering stimulating human eyes during snapshot can be avoided.

Description

technical field [0001] The invention relates to the security field, in particular to an exposure adjustment method, an exposure adjustment device, a camera control device, and a monitoring camera that support code stream output and capture functions. Background technique [0002] The surveillance camera can obtain the frame image of the surveillance scene meeting the definition requirement through exposure adjustment. For some monitoring scenarios, in addition to the need to provide a code stream containing continuous video frames, the monitoring camera often also needs to capture pictures. [0003] When capturing a snapshot frame each time, the working mode of the light sensor is usually switched, and the switching of the working mode of the light sensor will cause interruption of multiple consecutive frames in the code stream, thereby reducing the frame rate of the video frames in the code stream. Contents of the invention [0004] In view of this, each embodiment of th...

Claims

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Application Information

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IPC IPC(8): H04N5/235
CPCH04N23/73
Inventor 王祖力高浩然
Owner HANGZHOU HIKVISION DIGITAL TECH
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