Method for compensating for gait binary value distortion

A technology of binary image and gait energy image, which is applied in the field of image processing, can solve problems such as loss of detail information, poor key frame quality, and influence, and achieve good recognition effect and eliminate the effect of noise

CN101241546AInactive Publication Date: 2008-08-13XIDIAN UNIV
0 Cites 5 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2008-08-13
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The present invention provides a method of making up for walking two-value image distortion, main resolving the problem of human information defect contained in the walking two-value image of the walking database. The particular courses of the method is: processing denoising, cutting pretreatment to the walking two-value image to obtain a normal walking image; acting the difference value of the present representation walking image and a prevFrame normal walking image as frame difference of the normal walking image; adding each walking image in the walking cycle, and getting its average to obtain the walking energy image of the cycle; filtering the walk energy image according to the set threshold, removing the noise or weaker signal of the energy image to obtain a walking main image; combining the walking main image and the normal walking image to obtain frame difference main image to make up for distortion of the walking two-value image caused by human information defect, and embodying changes of the form under the walking course. The invention can effectively attribute the walking two-value image and improve discrimination, also can used for the image processing course of the walking identification.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of image processing, and in particular relates to the processing of the distortion of the binary image of gait, which can be used to make up for the binary image of gait with serious defect of human body information. Background technique

[0002] As a new biometric identification method, gait recognition mainly refers to identifying people through the analysis of people's walking posture. It is different from face recognition, fingerprint recognition, iris recognition and other biometric technologies. The advantages of long-distance recognition and not easy to be concealed have attracted more and more attention from researchers.

[0003] Early medical research shows that there are 24 different components in a person's gait. If these 24 components are taken into account, the gait is unique to the individual. In 1973, Johansson gave a physical psychology experiment in the document "Visual Perception of biolog...

Examples

Embodiment Construction

[0043] With reference to Fig. 2, concrete process of the present invention comprises:

[0044] 1. Preprocessing the gait binary image

[0045] Image preprocessing refers to the process of initial processing of images using some image processing methods. Although the process of image preprocessing is relatively simple, it has a great influence on the result of gait recognition. Taking the image preprocessing of the 352×240 gait binary image shown in Figure 3a as an example, the specific preprocessing operations are as follows:

[0046] (1) Remove the small noise points in the gait binary image and fill the small holes in the gait binary image with the methods of expansion and erosion in morphology;

[0047] (2) Further process some larger noise regions, and some larger noise regions cannot be removed by morphological methods. It is necessary to further process each connected part of the gait binary image after expansion and erosion, that is, the pixel has Mark the parts with...