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Image Enhancement Processing Method

A processing method and image enhancement technology, which is applied in the field of image processing, can solve the problems of loss of details in the bright part and high noise in the dark part, and achieve the effect of enhancing the details of the dark part, good enhancement effect and suppressing noise

Active Publication Date: 2017-11-14
北京华力智飞科技有限公司
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Problems solved by technology

[0013] In order to overcome the defects in the existing technology, an image enhancement processing algorithm is now provided to solve the problems of excessive noise in dark parts and loss of details in bright parts when performing histogram equalization on grayscale images with uneven illumination

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Embodiment Construction

[0044] In order to facilitate the understanding of the structure of the present invention, the following description will be made in conjunction with the accompanying drawings and embodiments.

[0045] refer to figure 1 , figure 1 It is a schematic flow chart of the image enhancement processing algorithm of the present invention. Such as figure 1 As shown, the present invention provides a kind of image enhancement processing algorithm, comprises the steps:

[0046] S1, the pixels of the image are divided into several layers according to the brightness value, and the boundary of the image in each layer is formed by a closed curve;

[0047] S2, for the layer with the lowest brightness and the layer with the highest brightness, first perform histogram equalization processing, and then remove noise;

[0048] S3, for other layers, first remove the noise, and then perform histogram equalization;

[0049] S4, merging the processed layers into an enhanced image.

[0050] Specifi...

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Abstract

The invention provides an image enhancement processing algorithm, which includes the following steps: divide the pixels of the image into several layers according to the brightness value, and the boundary of each layer of image is formed by a closed curve; the layer with the lowest brightness and the layer with the highest brightness For the layer, the histogram equalization process is performed first, and then the noise is removed; for other layers, the noise is removed first, and then the histogram equalization process is performed; several processed layers are merged into one Enhance images. In the present invention, the pixels of the image are divided into several layers according to the brightness value, and the noise points are classified and removed in each layer that maintains the connectivity. Different algorithms are used to process each part of the original image, and the results are geometrically superimposed. The final image is obtained, which solves the problems of excessive noise in the dark part and loss of details in the bright part when the histogram equalization is performed on the grayscale image with uneven illumination.

Description

technical field [0001] The invention relates to image processing technology, in particular to an image enhancement processing algorithm. Background technique [0002] Image enhancement is the basic technology of digital image processing, which refers to a processing method that enhances certain information in an image according to specific needs, and weakens or removes some unnecessary information. Improving image quality through digital image processing can make the processed image more applicable than the original image in certain occasions. Therefore, this type of processing is for some application purpose. Image enhancement technology mainly includes histogram modification processing, image smoothing processing, image sharpening processing and color processing technology. [0003] The algorithm of traditional image enhancement processing is relatively simple, and the operation speed is also fast, but its enhancement effect is limited, and the processing result cannot i...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/50
Inventor 夏建明李林
Owner 北京华力智飞科技有限公司
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