Target Recognition Using Neural Network Based on Contour Features

WANG Can-jin; SUN Tao; WANG Tin-feng; CHEN Juan

doi:10.3788/YJYXS20132804.0641

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Target Recognition Using Neural Network Based on Contour Features

Imaging Technology & Image Processing | 更新时间：2020-08-12

- Target Recognition Using Neural Network Based on Contour Features
- Chinese Journal of Liquid Crystals and Displays Vol. 28, Issue 4, Pages: 641-648(2013)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所, 吉林长春 130033
  2. 中国科学院大学北京,100049
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20132804.0641
  CLC： TN391
- Received：01 November 2012，
  
  Revised：29 December 2012，
  
  Published：15 August 2013
- 稿件说明：
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王灿进, 孙涛, 王挺峰, 陈娟. 基于轮廓特征的神经网络目标识别研究[J]. 液晶与显示, 2013,28(4): 641-648

WANG Can-jin, SUN Tao, WANG Tin-feng, CHEN Juan. Target Recognition Using Neural Network Based on Contour Features[J]. , 2013,28(4): 641-648
王灿进, 孙涛, 王挺峰, 陈娟. 基于轮廓特征的神经网络目标识别研究[J]. 液晶与显示, 2013,28(4): 641-648 DOI： 10.3788/YJYXS20132804.0641.

WANG Can-jin, SUN Tao, WANG Tin-feng, CHEN Juan. Target Recognition Using Neural Network Based on Contour Features[J]. , 2013,28(4): 641-648 DOI： 10.3788/YJYXS20132804.0641.

摘要

为了实现威胁源自动报警

使用BP神经网络构建自动报警系统。针对帧差法提取出的目标轮廓有重复和受变化背景影响的问题

提出了一种基于轮廓片段的目标特征提取方法。首先使用k-mediod聚类以剔除重复轮廓

再结合轮廓片段生长的方法

计算待识别轮廓和验证图片集的匹配代价以剔除背景轮廓

提取出匹配代价最小的轮廓生成轮廓片段字典。随后计算归一化的轮廓矩生成特征向量。最后将提取出的特征向量输入事先训练生成的BP神经网络进行分类。实验结果表明

算法适用于典型刚性目标识别

对于实验视频中枪支的平均识别率达到93.5%

单帧平均运算时间3.67 ms;对于Berkeley运动分割数据集中车辆的识别率达到98.2%

单帧平均运算时间5.26 ms。算法具有高实时性、高准确率的特点。

Abstract

In order to achieve automatic alarm for source of threats

an automatic alarming system is established using BP neural network. A feature extraction algorithm using contour fragments are proposed to solve the problem that the edges of the target extracted by frame subtraction is repeated and affected by changing background. Firstly

K-mediod clustering is used to remove repeated edge fragments. Then the matching cost between fragments to be recognized and validation set are computed combining with fragments growing method to eliminate the fragments of background.Then the fragments that have the minimal matching costs are extracted to obtain a codebook of edge fragments. Then improved normalized moments are calculated to generate the feature vector. At last the feature vector is inputted into the improved BP neural network for classification. Experimental results indicate that the algorithm is suitable for typical rigid target recognition. The averaging detection rate is up to 93.5% and averaging computing time of single frame is 3.67 ms for guns in experimental video. For cars in motion segmentation data set from Berkeley the averaging detection rate is up to 98.2% and averaging computing time of single frame is 5.26 ms. The algorithm proposed in this article has a high recognition rate and good real-time performance.

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references

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