Image processing method and device

An image processing and image technology, applied in the field of image processing, can solve the problem of low exposure ratio sensitivity of low-illumination images

Pending Publication Date: 2020-10-30
BEIJING DIDI INFINITY TECH & DEV
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Problems solved by technology

[0004] In view of this, the purpose of this application is to provide an image processing method and device, which can determine a clear target image through low-illuminance images and derivative images under dif

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[0027] In order to make the purpose, technical solutions and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be described clearly and completely in conjunction with the drawings in the embodiments of this application. It should be understood that this application is attached The drawings are only for the purpose of illustration and description, and are not used to limit the protection scope of this application. In addition, it should be understood that the schematic drawings are not drawn to scale. The flowchart used in this application shows operations implemented according to some embodiments of this application. It should be understood that the operations of the flowchart may be implemented out of order, and steps without logical context may be reversed in order or implemented at the same time. In addition, those skilled in the art can add one or more other operations to the flowchart, or remove ...

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Abstract

The invention provides an image processing method and device. The method comprises the steps: firstly obtaining a first low-illumination image; then, images of the first low-illumination image under different exposure proportions are generated, and a plurality of first derivative images are obtained; then, respectively extracting effective image feature information in the first low-illumination image and each first derivative image; and finally, cascading the effective image feature information in the first low-illumination image with the effective image feature information in each first derivative image, and generating a first target image corresponding to the first low-illumination image based on the cascaded effective image feature information. According to the technical scheme, the clear target image is determined through the low-illumination image and the derivative images of the low-illumination image under different exposure proportions, so that the defect of low sensitivity tothe exposure proportion of the low-illumination image in the prior art is overcome, and the defect of loss of image details can be effectively avoided.

Description

technical field [0001] The present application relates to the technical field of image processing, and in particular, to an image processing method and device. Background technique [0002] Low-light images are produced by image sensors under insufficient lighting conditions. Such images usually have problems such as low contrast, large noise, and loss of details. Low-light images are not only detrimental to human visual perception, but also pose a great challenge to classic computer vision tasks such as object detection, face recognition, and scene segmentation. In the travel platform, the use of computer vision algorithms for compliance detection has become a mainstream initial stage. Therefore, low-light images need to be enhanced. Low-light image enhancement is a preprocessing stage for tasks such as detection and recognition. Practical significance. [0003] At present, the following three methods are generally used to enhance low-light images: histogram method, Retin...

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Application Information

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IPC IPC(8): G06T5/00G06T5/20G06T5/50
CPCG06T5/002G06T5/007G06T5/20G06T5/50G06T2207/20084
Inventor 张毅伟赵元沈海峰
Owner BEIJING DIDI INFINITY TECH & DEV
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