Image processing method and device with uneven illumination

A technology of uneven illumination and image processing, applied in the field of image processing, can solve problems such as uneven illumination, and achieve the effect of overcoming uneven illumination

Active Publication Date: 2020-01-03
张杰辉
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Problems solved by technology

[0004] In order to solve the above problems, the present invention provides an image processing method and device with uneven illumination, by adaptively adjusting the binarization threshold of the grayscale image, Overcoming uneven lighting

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  • Image processing method and device with uneven illumination
  • Image processing method and device with uneven illumination
  • Image processing method and device with uneven illumination

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Embodiment Construction

[0038] The concept, specific structure and technical effects of the present disclosure will be clearly and completely described below in conjunction with the embodiments and drawings, so as to fully understand the purpose, scheme and effect of the present disclosure. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0039] Such as figure 1 Shown is an image processing method with uneven illumination, including the following steps:

[0040] Step S100, converting the acquired original image into a grayscale image;

[0041] Step S200, dividing the grayscale image into a plurality of grayscale subimages, and calculating a preliminary threshold of each grayscale subimage;

[0042] Step S300, generating an adaptive threshold for the grayscale image according to the preliminary threshold;

[0043] Step S400, converting the grayscale image into a binarized image acco...

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Abstract

The invention relates to the technical field of image processing, in particular to an image processing method and device with uneven illumination, and the method comprises the steps: firstly converting an obtained original image into a gray level image; dividing the grayscale image into a plurality of grayscale sub-images, and calculating a preliminary threshold of each grayscale sub-image; generating a self-adaptive threshold value of the grayscale image according to the preliminary threshold value; and finally, converting the grayscale image into a binarized image according to the adaptive threshold. According to the invention, the binarized threshold of the grayscale image is adaptively adjusted, so that the phenomenon of non-uniform illumination is overcome.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to an image processing method and device for uneven illumination. Background technique [0002] As one of the main ways for human beings to obtain information, digital images are widely used in many fields such as aerospace technology, biomedicine, military public security, video and multimedia technology, and e-commerce. However, due to factors such as lighting, weather, and acquisition equipment, the actually obtained images often have the problem of uneven illumination. Uneven light field illuminance will generate background noise in the image, resulting in uneven contrast and grayscale distribution of the image. , resulting in image distortion, which seriously affects the transmission of image information, and will interfere with the recognition accuracy and analysis results of the image-based detection system. [0003] Therefore, it is of great significance how to cor...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T7/136G06T7/90
CPCG06T5/007G06T7/136G06T7/90
Inventor 卢仕辉
Owner 张杰辉
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