標題: | Estimation of number of people in crowded scenes using perspective transformation |
作者: | Lin, SF Chen, JY Chao, HX 電控工程研究所 Institute of Electrical and Control Engineering |
關鍵字: | crowd density;crowd size;perspective transform |
公開日期: | 1-十一月-2001 |
摘要: | In the past, the estimation of crowd density has become an important topic in the field of automatic surveillance systems. In this paper, the developed system goes one step further to estimate the number of people in crowded scenes in a complex background by using a single image. Therefore, more valuable information than crowd density can be obtained. There are two major steps in this system: recognition of the head-like contour and estimation of crowd size. First, the Haar wavelet transform (HWT) is used to extract the featured area of the bead-like contour, and then the support vector machine (SVM) is used to classify these featured area as the contour of a head or not. Next, the perspective transforming technique of computer vision is used to estimate crowd size more accurately. Finally, a model world is constructed to test this proposed system and the system is also applied for real-world images. |
URI: | http://dx.doi.org/10.1109/3468.983420 http://hdl.handle.net/11536/29293 |
ISSN: | 1083-4427 |
DOI: | 10.1109/3468.983420 |
期刊: | IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS PART A-SYSTEMS AND HUMANS |
Volume: | 31 |
Issue: | 6 |
起始頁: | 645 |
結束頁: | 654 |
顯示於類別: | 期刊論文 |