Image enhancement method based on wide dynamic range and electronic equipment

Abstract

The invention relates to the field of image processing, discloses an image enhancement method based on a wide dynamic range and electronic equipment, can combine a local image processing mode and a global image processing mode for image fusion, avoids excessive exposure or insufficient exposure of an output image, achieves a better wide dynamic enhancement effect on the image, and improves the image quality. Therefore, the quality of output images is better. The method comprises the steps that the electronic equipment acquires a plurality of initial images with different exposure values in thesame scene; the electronic equipment converts the plurality of initial images into a plurality of brightness images by the electronic equipment, wherein each brightness image is an image at least represented by brightness; the electronic equipment performs weighted average processing on the plurality of brightness images based on different image areas in the plurality of brightness images to obtain a local fusion image; and the electronic equipment performs global mapping processing on the local fusion image to obtain a global mapping image. The method is specifically applied to the process of performing image enhancement on different exposure images in a wide dynamic scene.

Description

technical field [0001] The present application relates to the technical field of image processing, in particular to an image enhancement method and electronic equipment based on a wide dynamic range. Background technique [0002] With the wide application of electronic devices with shooting functions such as mobile phones and video cameras, users have higher and higher requirements for the quality of photos taken. However, the quality of photos taken by electronic devices is greatly affected by ambient light, especially when there is light with strong contrast between light and dark in the same scene, which is called a wide dynamic scene. Among them, under the illumination of strong light sources such as sunlight, lights, or reflections, there will be high-brightness areas in the captured image; and under the influence of backlight and shadows, there will be low-brightness areas in the captured image. However, since the above-mentioned electronic devices have limitations in...

AI Technical Summary

Problems solved by technology

However, since the above-mentioned electronic devices have limitations in the performance of the brightest area and the darkest area in the same scene, that is, the shooting of the camera has a dynamic range (Wide Dynamic Range, WDR), which results in some high-resolution images in the captured images. The picture in the brightness area becomes white due to overexposure, while the picture in some low-brightness areas becomes black due to underexposure, which seriously affects the image quality

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