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Image enhancement method based on space domain

An image enhancement and spatial domain technology, applied in the field of image enhancement based on the spatial domain, can solve problems such as utility difficulties, and achieve the effects of wide application, improved image quality, and increased effects

Inactive Publication Date: 2015-12-09
CHENGDU RONGCHUANG ZHIGU SCI & TECH
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  • Abstract
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  • Claims
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Problems solved by technology

In practice, finding an effective method requires extensive experimentation, and it is difficult to predict the utility of a specific method without prior knowledge of how a given image will be degraded.

Method used

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  • Image enhancement method based on space domain

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with drawings and embodiments.

[0032] In image processing, the spatial domain refers to the space composed of pixels. The spatial domain method acts directly on the pixels in the image or on a certain field. Therefore, image enhancement methods in the spatial domain are divided into pixel point processing and domain processing.

[0033] Pixel processing includes image grayscale transformation and histogram equalization. Among them, histogram equalization can be subdivided into traditional histogram equalization and partial histogram equalization. Domain processing includes image smoothing filtering and image sharpening filtering. It will involve mean filter, median filter, gradient operation, Laplacian operator and so on.

[0034] A method for image enhancement based on spatial domain, comprising the steps of:

[0035] (1) Get the original image;

[0036] (2) Carry out grayscale transformation ...

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Abstract

The invention discloses an image enhancement method based on space domain and belongs to the technical field of image enhancement methods. Based on index for measuring image quality, advantages and disadvantages of the image enhancement method are evaluated. The method comprises steps of 1) obtaining an original image; 2) performing grey level transformation on the original image so as to obtain a grey level image; 3) performing histogram equalization on the grey level image; and 4) performing histogram specification enhancement processing on the grey level image processed via the histogram equalization. The method is used for image processing.

Description

technical field [0001] An image enhancement method based on space domain is used for image processing and belongs to the technical field of image enhancement methods. Background technique [0002] Image enhancement refers to highlighting important information in an image according to specific needs, while weakening or removing unnecessary information. Images obtained from different channels, through appropriate enhancement processing, can process the original blurred or even indistinguishable original image into a clear and usable image rich in a lot of useful information, effectively remove the noise in the image, enhance Edges or other regions of interest in the image, making it easier to detect and measure objects of interest in the image. [0003] The purpose of image enhancement is to enhance the visual effect of the image and convert the original image into a form that is more suitable for human observation and computer analysis and processing. It generally relies on...

Claims

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Application Information

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IPC IPC(8): G06T5/40
Inventor 张岱齐弘文
Owner CHENGDU RONGCHUANG ZHIGU SCI & TECH
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