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Image fusion method and device, electronic device and medium

An image fusion and image technology, applied in the field of image processing, can solve the problems of excessively unnatural edges and poor image quality in overexposed areas, and achieve the effect of reducing loss of details, improving quality effects, and improving image quality.

Active Publication Date: 2018-08-03
CHENGDU CK TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen that the image generated by the dual-camera fusion of the color camera + black and white camera in the prior art has the problem that the edge of the overexposed area is too unnatural, resulting in poor image quality

Method used

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  • Image fusion method and device, electronic device and medium
  • Image fusion method and device, electronic device and medium
  • Image fusion method and device, electronic device and medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] This embodiment provides an image fusion method, please refer to figure 1 , figure 1 It is a flow chart of the image fusion method in the embodiment of the present invention, including:

[0051] Step S101, acquiring a color image and a black-and-white image, where the subject of the color image and the black-and-white image are the same;

[0052] Step S102, detecting an overexposed area on the black and white image to determine a target overexposed area;

[0053] Step S103, expanding the target overexposure area to determine the expanded overexposure area of ​​the black and white image, and determining the corresponding expanded area of ​​the color image according to the expanded overexposure area; wherein, in the color After the image is registered with the black-and-white image, the expanded overexposed area and the corresponding expanded area are matching areas;

[0054] Step S104, according to the weight value, fusing the image of the overexposure area after expa...

specific example

[0123] Assuming that the gamma curve weight parameter γ of the gamma curve graph is inversely proportional to the average brightness ratio, the smaller the γ is during fusion, the smaller the proportion of pixels on the black-and-white image is, so as to ensure that the larger the average brightness ratio is, the black-and-white The smaller the proportion of pixels in the overexposed area on the image.

[0124] For example, suppose Image 6 The gamma curve weight parameter γ of the gamma curve graph in the middle is inversely proportional to the average brightness ratio, then Image 6 The abscissa in is the brightness value of the pixel in the corresponding expanded region of the color image, and the ordinate is the proportion of the brightness value of the corresponding pixel during fusion. Depend on Image 6 It can be seen that the more serious the overexposure of the black and white image corresponds to the larger the average brightness ratio, then Image 6 The smaller t...

Embodiment 2

[0153] Such as image 3 As shown, an image fusion device is provided, comprising:

[0154] An acquisition module 301, configured to acquire a color image and a black-and-white image, where the subject of the color image and the black-and-white image are the same;

[0155] A detection module 302, configured to detect an overexposed area on the black and white image to determine a target overexposed area;

[0156] An expansion module 303, configured to expand the target overexposed area to determine the expanded overexposed area of ​​the black and white image, and determine the corresponding expanded area of ​​the color image according to the expanded overexposed area; wherein, in After the color image and the black-and-white image are image-registered, the expanded overexposed area and the corresponding expanded area are matching areas;

[0157] The fusion module 304 is configured to fuse the image of the dilated overexposed area and the image of the corresponding dilated area ...

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Abstract

The present invention discloses an image fusion method and device, an electronic device and a medium. The method comprises the steps of: obtaining a color image and a black-and-white image, wherein the shooting objects of the two images are the same; detecting an overexposure area on the black-and-white image to determine a target overexposure area; expanding the target overexposure area to determine an overexposure area of the black-and-white image after expanding, and determining an area after expanding corresponding to the color image according to the overexposure area after expanding, wherein after the color image and the black-and-white image are subjected to image registration, the overexposure area after expanding and the corresponding area after expanding are matching areas; and according to a weight value, fusing an image of the overexposure area after expanding and an image of the corresponding area after expanding to generate a fusion image. The image fusion method and device, an electronic device and a medium solve the problem that the overexposure area edge is excessively unnatural to cause poor image quality and achieve the technical effect of improving the image quality.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image fusion method, device, electronic equipment and medium. Background technique [0002] With the increasingly fierce competition in the smart phone market, the focus of competition among major mobile phone manufacturers has gradually extended from the previous hardware arms race to the field of audio-visual entertainment, especially the camera performance of mobile phones. With the rapid iteration of mobile phones, the camera performance of single-camera mobile phones has reached the limit to a certain extent. If you want to make a breakthrough in the field of photography, you must rely on dual cameras. Therefore, in the past two years, many mobile phone manufacturers have launched dual-camera phones. . [0003] One of the more important dual cameras is the color camera (RGB) + black and white camera (Mono). This type of dual camera is mainly used to impr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/50
CPCG06T5/50
Inventor 王涛
Owner CHENGDU CK TECH
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