Image enhancement method
An image enhancement and image technology, which is applied in the field of image processing, can solve problems such as image distortion, poor image processing effect, and inability to obtain image information, etc., and achieve high versatility
Active Publication Date: 2020-09-01
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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[0002] The image obtained by the visible light sensor is often affected by illumination and occlusion, making it impossible to obtain the information of the target in the image
Generally, when performing image processing, the value of each pixel in the image will be uniformly reduced by a set value, so that the image can be made brighter, but in actual processing, objects with different pixels are visible in visible light. The image pixels displayed in the sensor will change differently, and different pixels have different rules for the change of light intensity, so if only the value of each pixel in the image is reduced, the image will be distorted , so that the effect of image processing is very bad
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[0059] A specific embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.
[0060] The images obtained by the visible light sensor are often affected by light and occlusion, making it impossible to obtain the information of the target in the image. Some images with insufficient light intensity, such as figure 1 shown. In order to solve the impact caused by insufficient light, we enhanced the visible light image, aiming to make the light of the image more uniform and improve the texture details in the shadows of the image. After research, it is found that the image pixels of objects with different pixels displayed in the visible light sensor will have different changes, and at the same time, different pixels have different rules for the change of light intensity.
[0061] like Figure 9 Shown, pr...
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The invention discloses an image enhancement method. The method comprises the following steps: firstly, exploring a change rule of a pixel value of a surface color of an actual object after digital imaging through an image acquisition sensor under irradiation of different illumination intensities; obtaining a preliminary image enhancement formula, performing enhancement processing on a to-be-enhanced image by using the formula to obtain an enhanced image 1, performing histogram equalization processing on the to-be-enhanced image to obtain an enhanced image 2, and finally performing weighted fusion on the to-be-enhanced image and the corresponding enhanced image 1 and enhanced image 2 to obtain a final enhanced effect image. Compared with a traditional enhancement algorithm, the image obtained through the method has more natural illumination distribution, and texture details of a large number of original images are reserved.
Description
technical field [0001] The invention relates to the field of image processing, in particular to an image enhancement method. Background technique [0002] The image obtained by the visible light sensor is often affected by illumination and occlusion, which makes it impossible to obtain the information of the target in the image. Generally, when performing image processing, the value of each pixel in the image will be uniformly reduced by a set value, so that the image can be made brighter, but in actual processing, objects with different pixels are visible in visible light. The image pixels displayed in the sensor will change differently, and different pixels have different rules for the change of light intensity, so if only the value of each pixel in the image is reduced, the image will be distorted , so that the effect of image processing is very bad. Contents of the invention [0003] The purpose of the present invention is to overcome the problems in the above-mentio...
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Login to View More IPC IPC(8): G06T5/00
CPCG06T5/94G06T5/70
Inventor 赵良军董林鹭
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING