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Nonlinear image multi-scale geometric representation method

A nonlinear, multi-scale technology used in image enhancement, image data processing, instrumentation, etc.

Active Publication Date: 2014-03-12
NAT UNIV OF DEFENSE TECH
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  • Abstract
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Problems solved by technology

[0005] In order to effectively solve the problem of nonlinear image multi-scale geometric representation, the present invention proposes a nonlinear image multi-scale geometric representation method

Method used

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  • Nonlinear image multi-scale geometric representation method

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Embodiment Construction

[0035] Based on the attachment, the non -linear image multi -scale geometry method provided by the present invention is explained in detail.

[0036] figure 1 The flow chart of the non -linear image multi -scale geometry provided for the invention.

[0037] The first step of this flowchart is to build a FIR medium -value mixed filter. By obtaining the sampling of the image of the image of the four -oriented subtrama, the Subset 1 (m, n), subset 2 (m, n), subset 3 (m, n) and subset 4 (m, n) and calculate the median value of the collection of samples.Each subfiller is designed to retain the detail information for a certain direction. The FIR mid -value mixed filter combined with the subtoles in multiple directions to capture and retain the edge details of each direction of the image.In addition, different sampling methods of subtoles can build different FIR medium -value mixed filters.

[0038] The second step is the decomposition of image non -linear pyramid, which corresponds to ...

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Abstract

The invention provides a nonlinear image multi-scale geometric representation method. The technical scheme comprises the following steps of 1, filtering an image by using an FIR medium value mixed filter; 2, performing 2-reducing sampling on the filtered image according to an interlacing inter-row mode to obtain a lower sampling image; step 3, performing medium value-based 2-increasing interpolation filtering on the lower sampling image to obtain an interpolation estimating image; step 4, subtracting the original image by the interpolation estimating image to obtain multiple scale layer nonlinear pyramid decomposing images; step 5, performing Shear directional filtering on each scale layer nonlinear pyramid decomposing image to obtain a sub-band image. The nonlinear image multi-scale geometric representation method belongs to an image nonlinear multi-scale geometric representation method with excellent performance, is less in operand, and has higher application values in aspects such as image compressing, edge extracting, grain retrieving.

Description

Technical field [0001] The invention involves the field of computer vision and digital image processing, and more specifically, it involves a multi -scale geometry analysis method involving a non -linear image. Background technique [0002] With the development of computer vision and digital image processing technology, many new image representation and processing tools have appeared in recent years.Due to the characteristics of multi -scale geometric analysis, due to the characteristics of multi -resolution, time -frequency bureau, multi -directional characteristics, etc., it has become a representative theoretical framework in the field of image understanding.Maybe it greatly improves the performance of various image processing applications.In addition, the supporting intermediaries of the multi -scale geometric analysis base function are the "different opposite sex" characteristics with a length -width ratio change with scale and width ratio, which can more effectively realize...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
Inventor 雷琳周石琳刘俊良邹焕新计科峰李智勇孙浩侯毅
Owner NAT UNIV OF DEFENSE TECH
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