Pedestrian detection method based on CoLBP co-occurrence features and GSS (gradient self-similarity) features

A pedestrian detection and feature training technology, which is applied in the fields of instruments, character and pattern recognition, computer parts, etc., can solve the problems of ineffective combined feature detection, single feature, poor detection effect, etc., to improve the classification efficiency, high Discrimination ability, effect of shortening training time

Active Publication Date: 2017-07-21
NANJING UNIV OF POSTS & TELECOMM
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AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, provide a pedestrian detection method based on CoLBP co-occurrence features and GSS features, and solve the problem that the existing pedestrian detec

Method used

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Example Embodiment

[0038] Embodiments of the present invention will be described below with reference to the accompanying drawings.

[0039] like figure 1As shown in the figure, the present invention proposes a pedestrian detection method based on CoLBP co-occurrence feature and GSS feature. The realization idea is as follows: firstly, the HOG feature of each frame image is calculated, and the pairwise gradient self-similarity between HOG feature blocks is further calculated. At the same time, in order to reduce the cost of feature calculation, the present invention also uses FGM to remove non-informative components in GSS, and generates DGSS features; finally, two-stage cascaded classifiers are used to The performance of pedestrian detection is evaluated.

[0040] A preferred embodiment of the pedestrian detection method based on CoLBP symbiotic feature and GSS feature of the present invention specifically includes the following steps:

[0041] Step A. Extract the HOG feature and LBP feature of

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Abstract

The invention discloses a pedestrian detection method based on CoLBP co-occurrence features and GSS (gradient self-similarity) features. The method includes the following steps that: the HOG features and LBP features of each frame of image in a video sequence are extracted, paired gradient self-similarity (GSS) features of the local gradient blocks of the images are calculated according to the HOG features, and CoLBP co-occurrence features are obtained according to the LBP features; asymmetric GSS features are removed through adopting a feature generating machine (FGM), so that discriminant gradient self-similarity (DGSS) features are obtained; an HOG feature and CoLBP co-occurrence feature training-based linear SVM (support vector machine) removes negative samples in the images; and as for remaining negative samples and positive samples, pedestrians in each frame of image are detected through using an HOG feature and CoLBP co-occurrence feature training-based Real-AdaBoost classifier, and detection results are obtained. According to the method of the invention, the CoLBP co-occurrence features and the GSS features at higher levels are obtained based on the HOG features and LBP features, and therefore, the reliability of pedestrian feature extraction is increased, and a final detection result also shows that the method of the invention has good detection effect.

Description

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Claims

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Application Information

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Owner NANJING UNIV OF POSTS & TELECOMM
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