Method and device for adaptive adjustment of exposure parameters and a shooting device
A technology for self-adaptive adjustment and exposure parameters, applied in the field of exposure, it can solve problems such as reducing the picture quality of video streams, and achieve the effect of optimizing the capture quality and the overall quality.
Active Publication Date: 2021-04-06
SUZHOU KEDA TECH
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[0005] In view of this, the embodiments of the present invention provide an adaptive adjustment method and device for exposure parameters and a shooting device to solve the problem that the existing exposure method reduces the overall quality of the video stream while optimizing the quality of local target capture
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[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.
[0028]An embodiment of the present invention provides an adaptive adjustment method of exposure parameters, which can be used for shooting equipment that continuously acquires pictures in a continuous period of time, such as cameras and video recorders, and is especially suitable for capture cameras in video surveillance systems. While the shooting device con...
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The invention discloses an adaptive adjustment method and device for exposure parameters and a shooting device, wherein the method includes: obtaining the global brightness of the current picture, and calculating the first adjustment amount of the exposure parameter according to the global brightness; When targeting, obtain the local brightness of the target; the local brightness of the target refers to the brightness of the local area where the target is located in the picture; calculate the second adjustment amount of the exposure parameter according to the local brightness; according to the first adjustment amount and its corresponding first weight value, the second adjustment amount and its corresponding second weight to calculate the target adjustment amount of the exposure parameter; calculate the current exposure parameter according to the exposure parameter and the target adjustment amount used when shooting the last frame, and adjust the exposure parameter to the current exposure parameters. The present invention simultaneously balances the global brightness and the target local brightness in the process of optimizing the exposure parameters, so that the overall quality of the video stream picture is also better while optimizing the capture quality of the local target.
Description
technical field [0001] The invention relates to the field of exposure technology, in particular to an adaptive adjustment method and device for exposure parameters and a shooting device. Background technique [0002] In modern video surveillance applications, front-end cameras not only provide code streams to servers, but more and more smart cameras support target capture in order to improve the efficiency of back-end server analysis. For this reason, while maintaining the overall quality of the monitoring picture, it is becoming more and more important to improve the capture quality of local targets. With the continuous improvement of front-end hardware performance and the popularization of machine learning technology, while the front-end camera provides monitoring streams, the local target capture function is also rapidly improving. At present, various capture cameras based on the detection of vehicles, faces and other objects are hot spots in the research and development...
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IPC IPC(8): H04N5/235H04N9/04
Inventor 邹炯晋兆龙张全磊徐文才张天益
Owner SUZHOU KEDA TECH