HDR image generation method and device based on multi-camera image fusion, and storage medium

Abstract

The invention discloses an HDR image generation method based on multi-camera image fusion, terminal equipment and a computer storage medium. The method comprises the steps: obtaining a plurality of images with different exposure degrees, which are photographed at the same time in the same scene, from a plurality of cameras, and enabling the current exposure parameters of the plurality of cameras to be generated by the result of a previous frame; aligning at least one abnormal exposure image by taking the normal exposure image as a reference; and finally, respectively fusing the brightness channel and the chrominance channel of the aligned image to generate an HDR image. According to the technical scheme, HDR images can be generated by multiple cameras, and the problems of ghosting and color cast possibly caused by continuous exposure of a single camera are avoided.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an HDR image generation method, device and storage medium based on multi-camera image fusion. Background technique [0002] Real world scenes often have a very high dynamic range in brightness. However, the dynamic range perceived by sensors in ordinary digital imaging devices (such as cameras) is much smaller, which makes it difficult to show all the details in a single exposure image when shooting a large dynamic range, and may cause excessive noise in places that are too bright or too dark. Exposure or underexposure. In order to make the imaging results show rich color details and light and dark levels, which can better match the cognitive characteristics of human eyes to real world scenes, high dynamic range (High Dynamic Range, HDR) imaging has become an increasingly popular technology in digital imaging equipment. A popular imaging technique. An image ob...

AI Technical Summary

Problems solved by technology

However, when this method shoots a scene with a moving object, the object will appear in different positions on different photos, and the direct fusion of brightness will form a ghost effect, which is specifically manifested as ghosting, blurring or ghosting in the composite image Phenomenon

Secondly, the color components (channels U and V of the YUV color space, or channels A and B of the LAB color space) are processed separately during the fusion process, which will cause the color components after fusion to not conform to the original relationship between each other. Make the screen appear color cast

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