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Image enhancing method using multi-dimensional multi-structural element mathematical morphology

A technology of mathematical morphology and structural elements, used in image enhancement, image data processing, instruments, etc., can solve problems such as reducing the effectiveness of image enhancement algorithms, achieve broad market prospects and application value, enhance images, and widely used effects.

Inactive Publication Date: 2010-08-18
BEIHANG UNIV
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  • Abstract
  • Description
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Problems solved by technology

However, the effectiveness of the image enhancement algorithm based on the top-hat transformation is reduced because the mathematical morphology operation may seriously smooth the image details.

Method used

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  • Image enhancing method using multi-dimensional multi-structural element mathematical morphology
  • Image enhancing method using multi-dimensional multi-structural element mathematical morphology
  • Image enhancing method using multi-dimensional multi-structural element mathematical morphology

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Embodiment Construction

[0038] In order to better understand the technical solutions of the present invention, the implementation manners of the present invention will be further described below in conjunction with the accompanying drawings. The system block diagram of the present invention is as figure 1 As shown, the present invention is an image enhancement method using multi-scale multi-structural element mathematical morphology, and the specific implementation steps of the method are as follows:

[0039] There are n scales and m different shapes of structural elements participating in the calculation:

[0040] Step 1: Calculate the top-hat transformation corresponding to each different shape structure element at each scale

[0041] Mathematical morphology is an important image processing tool. Mathematical morphology operations are based on two sets: the original image f and the structural element B. Mathematical morphology operations are mainly based on two basic operations: dilation and ero...

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Abstract

The invention relates to an image enhancing method using multi-dimensional multi-structural element mathematical morphology, which comprises four steps: setting m structural elements in different shapes with n dimensions to be calculated, and firstly using Top-Hat conversion in the mathematical morphology for calculating image regions corresponding to m structural elements of different shapes under each dimension; then, obtaining bright regions and dark regions extracted by m structural elements under each dimension through accumulating the image regions corresponding to each structural element; subsequently, taking the maximum values of the bright regions and the dark regions under all dimensions to be used as the bright regions and the dark regions extracted by all structural elements under all dimensions; and finally, reaching the goal of image enhancement through respectively adding the extracted bright regions on original images and subtracting the extracted dark regions for enhancing the contrast grade between the bright regions and the dark regions on the original images. The invention can be widely applied to various application systems based on images, and has wide market prospect and high application value.

Description

(1) Technical field [0001] The invention relates to an image enhancement method using multi-scale multi-structural element mathematical morphology, belongs to the field of digital image processing, and mainly relates to mathematical morphology and image enhancement technology. It has broad application prospects in various image-based application systems. (2) Background technology [0002] Image enhancement is an important image processing technology, which is widely used in noise filtering, fingerprint recognition, target recognition, and color image processing. The purpose of image enhancement is to enhance useful information in images according to different application purposes. Images usually contain bright and dark regions. In many cases, some useful image features or image details cannot be effectively identified due to the low contrast between the bright and dark regions of the image. Therefore, the basic idea of ​​image enhancement is to increase the contrast betwe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/20
Inventor 白相志周付根
Owner BEIHANG UNIV
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