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A white balance processing method and device

A processing method and white balance technology, applied in the field of image processing, can solve problems such as color difference, and achieve the effect of reducing color difference

Active Publication Date: 2019-09-17
ZHEJIANG DAHUA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a white balance processing method and device, which are used to solve the technical problem of color differences between the images captured by two cameras in the existing panoramic monitoring and detail monitoring systems, and reduce the color difference between the images captured by each camera. color difference

Method used

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  • A white balance processing method and device
  • A white balance processing method and device

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Experimental program
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Embodiment 1

[0071] Please refer to figure 1 , The first embodiment of the present invention provides a white balance processing method, which is applied to a monitoring system including a panoramic camera and a detail camera, including:

[0072] S101: When shooting the same scene by the detail camera and the panoramic camera, determine the area of ​​the first field of view of the detail camera and the area of ​​the second field of view of the panoramic camera;

[0073] S102: Determine the area of ​​the visual field overlap region between the area of ​​the first visual field region and the area of ​​the second visual field region, and the ratio of the area of ​​the visual field overlap region to the area of ​​the first visual field region;

[0074] S103: Determine the white balance gain of the detail camera based on the ratio;

[0075] S104: Perform white balance processing on the first image taken by the detail camera based on the white balance gain of the detail camera, so that the tonal differen...

Embodiment 2

[0111] Based on the same inventive concept as the first embodiment of the present invention, please refer to Figure 8 , The embodiment of the present invention also provides a white balance processing device, including:

[0112] The first determining unit 10 is used to determine the area of ​​the first field of view of the detail camera and the area of ​​the second field of view of the panoramic camera when shooting the same scene through the detail camera and the panoramic camera;

[0113] The second determining unit 20 is configured to determine the area of ​​the visual field overlap region between the area of ​​the first visual field region and the area of ​​the second visual field region, and the ratio of the area of ​​the visual field overlap region to the area of ​​the first visual field;

[0114] The third determining unit 30 determines the white balance gain of the detail camera based on the ratio;

[0115] The processing unit 40 performs white balance processing on the first ...

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Abstract

The invention discloses a white balance processing method and device, which are applied to a monitoring system including a panoramic camera and a detail camera, wherein the method includes: when shooting the same scene through the detail camera and the panoramic camera, determining the area of ​​the first field of view of the detail camera, and the area of ​​the second field of view of the panoramic camera; determining the area of ​​the overlapping field of view between the area of ​​the first field of view and the area of ​​the second field of view, and the The ratio of the area of ​​the overlapped field of view to the area of ​​the first field of view; based on the ratio, determining the white balance gain of the detail camera; based on the white balance gain of the detail camera, the first image captured by the detail camera Performing white balance processing so that the tone difference between the first image and the second image captured by the panoramic camera is smaller than a preset threshold. The color difference that exists between images captured by each camera has been reduced.

Description

Technical field [0001] The present invention relates to the technical field of image processing, in particular to a white balance processing method and device. Background technique [0002] In the existing panoramic monitoring and detail monitoring system consisting of a panoramic camera and a detail camera, when the two are shooting at the same scene, the panoramic camera and the detail camera use their own independent white balance preprocessing gains to adjust the white balance. As a result, the color style of the same object is inconsistent, some are warmer, and some are cooler. [0003] For a specific example, the scene corresponding to the counter of store A is monitored through the panoramic monitoring and detail monitoring system composed of panoramic cameras and detail cameras. If the operator of the monitoring system wants to monitor a specific one of the scenes When the object B is observed in detail, once the object B is determined, the detail camera will magnify the o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/73
CPCH04N23/88
Inventor 卢二利周贞林忠炎陈明珠
Owner ZHEJIANG DAHUA TECH CO LTD
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