Wide dynamic image fusion method and device and computer readable storage medium
A wide dynamic image and fusion method technology, applied in the field of image processing, can solve problems such as affecting the monitoring effect and inability to obtain effective information.
Pending Publication Date: 2022-01-07
ZHEJIANG DAHUA TECH CO LTD
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However, when high-brightness areas illuminated by strong light sources and relatively low-brightness areas such as shadows and backlights exist in the image at the same time, the captured picture may appear that the dark places are too dark and the bright places are too bright at the same time. Effective information cannot be obtained, which affects the actual monitoring effect
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[0024] In order to make the object, technical solution and effect of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples.
[0025] This application provides a wide dynamic image fusion method. The present invention corrects the initial fusion weight based on the information content of each area of the image on the basis of the initial fusion weight assigned according to the brightness, and sacrifices the low information content area, so that Under the premise that the dynamic range of the equipment platform is limited, display areas with a large amount of information as much as possible to solve the problem of over-compression of the gray scale of the monitoring area that is actually concerned in the real wide dynamic mode in the actual use of security, blurring, and visual dynamic range. Insufficient problem.
[0026] see figure 1 , figure 1 It is a schemati...
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The invention discloses a wide dynamic image fusion method and device and a computer readable storage medium, and the method comprises the steps: at least obtaining a first brightness image and a second brightness image with different exposure values in the same scene, the exposure value of the first brightness image being greater than the exposure value of the second brightness image; distributing an initial fusion weight to the first brightness image and the second brightness image based on the brightness value of each region of the image; correcting the initial fusion weight based on the information amount of each region of the image to obtain a corrected fusion weight, wherein the correction comprises the steps of reducing the fusion weight of an image region of which the information amount is less than a first threshold value in the first brightness image or increasing the fusion weight of an image region of which the information amount is greater than a second threshold value in the first brightness image; and performing weighted fusion on the first brightness image and the second brightness image by using the corrected fusion weight to obtain a fused image. By means of the mode, more image information can be shown, and the fusion efficiency is improved.
Description
technical field [0001] The present invention relates to the technical field of image processing, in particular to a wide dynamic image fusion method, device and computer-readable storage medium. Background technique [0002] In the field of security and protection, the scenes that the equipment needs to capture pictures are complex and diverse, and some scenes have a high dynamic range. Wide dynamic technology refers to a technology that makes the entire picture captured by the camera clear under complex lighting environments. However, when high-brightness areas illuminated by strong light sources and relatively low-brightness areas such as shadows and backlights exist in the image at the same time, the captured picture may appear dark and bright at the same time. Effective information cannot be obtained, which affects the actual monitoring effect. Contents of the invention [0003] The technical problem mainly solved by the present invention is to provide a wide dynamic ...
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IPC IPC(8): G06T5/50G06T5/00
CPCG06T5/50G06T2207/10004G06T2207/20221G06T5/90G06T5/70
Inventor 赵思佳
Owner ZHEJIANG DAHUA TECH CO LTD