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Denoising and sharpening method by aiming at multimode image

An image and image group technology, applied in the field of image processing

Inactive Publication Date: 2012-06-27
CHONGQING IND POLYTECHNIC COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no sharpening method specifically for multi-mode images, especially for noisy multi-mode images

Method used

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  • Denoising and sharpening method by aiming at multimode image
  • Denoising and sharpening method by aiming at multimode image
  • Denoising and sharpening method by aiming at multimode image

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Embodiment Construction

[0041] The present invention will be further described below in conjunction with the accompanying drawings.

[0042] Such as figure 1 Shown: the specific implementation steps of a kind of denoising and sharpening method of multimode image are as follows:

[0043] Step 1. For the input noisy multi-mode image group d ijk Perform Dual bilateral filtering to obtain the image group g′ after the first-level denoising ijk , wherein, the subscript i, j represents the pixel at the (i, j) position in the image, k represents the kth image component in the image group, and the value is k=1,...,N, where N is a multimode The number of image components in the image group;

[0044] In the embodiment, the test multimodal image used by the present invention is as figure 2 As shown, the value of N is 2, that is, the multimode image group is composed of two image components, figure 2 (a) is component 1, figure 2 (b) is component 2;

[0045] Noisy multimode image group d ijk for right fi...

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Abstract

The invention discloses a denoising and sharpening method by aiming at a multimode image, which comprises the following steps: 1, carrying out Dual bilateral filtering to an input noise multimode image group dijk to obtain a first level of denoised image group g'ijk; 2, taking the first level of denoised image group g'ijk as a reference image, and carrying out referenced Dual bilateral filtering to the original noise image group dijk to obtain a second level of denoised image group g''ijk; 3, carrying out edge-preservation cross unsharpened masking filtering to the second level of denoised image group g''ijk to obtain a sharpened and enhanced image group f'ijk; and 4, taking the g''ijk as a reference image, and carrying out referenced Dual bilateral filtering to the sharpened and enhanced image group f'ijk to obtain a final result fijk. According to the characteristic that information among component images in the multimode image group has certain relativity, the multimode image can be subjected to noise suppression and edge selectivity sharpening, and the subjective visual quality is improved.

Description

technical field [0001] The invention belongs to the technical field of image processing and relates to image denoising and image sharpening methods, in particular to a denoising and image sharpening method for multi-mode images. Background technique [0002] Image enhancement refers to the processing of existing images according to the requirements of different application fields to highlight certain information in the image, weaken or remove some unnecessary information, and obtain an image more suitable for the specific application. Image processing methods that convert raw images into a form that is more suitable for analysis and processing by humans or machines. Image augmentation does not increase the intrinsic information content of the data, but increases the dynamic range of selected features to make them easily detectable. Traditional image enhancements include contrast and edge enhancement, false color enhancement, sharpening and magnification, and more. The cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
Inventor 邱宇浦滨喜一王世元谭洪涛杜增罡黄琼俭
Owner CHONGQING IND POLYTECHNIC COLLEGE
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