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An image enhancement method and system based on adaptive linear grayscale

A grayscale image and image enhancement technology, which is applied in the field of image processing, can solve the problems of large amount of calculation and many times of traversal

Active Publication Date: 2022-07-05
上海复为策划设计集团有限公司
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Problems solved by technology

[0003] At present, the common method of re-processing the grayscale image is: to linearly grayscale the grayscale image, but the slope and intercept in the linear formula of the linear grayscale must be continuously trial and error to find a suitable method. The transformation equation of , the number of traversals is large, and the amount of calculation is large

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  • An image enhancement method and system based on adaptive linear grayscale
  • An image enhancement method and system based on adaptive linear grayscale
  • An image enhancement method and system based on adaptive linear grayscale

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[0040] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the following describes an image enhancement method and system based on adaptive linear grayscale proposed in accordance with the present invention with reference to the accompanying drawings and preferred embodiments. , its specific implementation, structure, features and effects are described in detail as follows. In the following description, different "one embodiment" or "another embodiment" are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0042]Embodiments of the present invention prov...

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Abstract

The invention relates to the technical field of image processing, in particular to an image enhancement method and system based on adaptive linear grayscale. The method first collects natural images and grayscales the natural images to obtain grayscale images; performs linear grayscale transformation on the grayscale images to obtain linear grayscale images. The grayscale mean value of the image is determined; the value range of the linear slope in the linear formula is determined by the slope relationship model corresponding to the grayscale histogram of the linear grayscale image and the grayscale mean value of the grayscale image; according to the grayscale histogram of the linear grayscale image The peak value, the degree of continuity and the area ratio of the graph are selected from multiple linear grayscale images to select a grayscale enhanced image. The invention obtains the value range of the intercept and the linear slope in the linear formula of the linear grayscale transformation according to the grayscale mean value and the slope relationship model, and achieves the purpose of reducing the number of traversals and improving the calculation speed.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to an image enhancement method and system based on adaptive linear grayscale. Background technique [0002] When processing images, it is highly probable that the color image is required to be converted into a grayscale image for processing, and the directly converted grayscale image does not meet some processing requirements, such as defect detection on the converted grayscale image and when the defect is detected. When the features are not obvious, it is necessary to perform grayscale enhancement on the grayscale image to obtain defect features more clearly. Therefore, it is necessary to perform grayscale transformation on the grayscale image again to obtain the desired grayscale image. [0003] At present, the common method of gray-scale processing again is to perform linear gray-scale on the gray-scale image. The transformation equation of , the number of times of tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/40G06T5/00
CPCG06T5/40G06T2207/20004G06T5/90
Inventor 乐海霞
Owner 上海复为策划设计集团有限公司