视频处理
2009年6月15日
题目：A Dynamic Adaptive Update System of Tracking Moving Objects Based on Contour Feature
作者：Dong Wang, Hong Zhu, Qin Li, Yong Chu, Ruirui Ji
年份：2006
Abstract-This paper proposes a real-time moving
objects detecting algorithm based on computer vision.
Contour feature is firstly extracted from the initial frame
as the feature to describe object, and then the moving
object in the latter frame could be tracked and located by
marking the location of this feature, at the same time, the
feature is dynamically adaptively updated and optimized
online. The slight computation burden and robustness to
the noise and illumination disturbance make the algorithm
have a good real-time quality and reliability. Experimental
results indicate that the system reaches the designing
requirements.
Keywords-Feature Template Matching, Tracking
Moving Objects, Detecting Objects, Adaptive Update of
Template
E-mail:wangdong1210@xaut.edu.cn |
题目：A Codebook-based Video Moving Objects Detecting Method
作者：Yong Chu, Hong Zhu and Dong Wang
年份：2006
Abstract - In this paper, we present a codebook-based
background modeling method to detect moving objects from
video sequences to adapt to some circumstance changes. The
characteristic parameters and numbers of code vector of
codebook for each pixel after studied are different, so the
background description is more flexible and abundant. The test
results show that this algorithm can handle scenes that contain
moving background or illumination variation, and it achieves
robust detection for compressed videos.
Key words - background modeling, codebook, code vector,
object detect
E-mail:chuy2001@163.com |
题目：AN OVERLAPPING BUBBLES PARTITION METHOD IN AREATED WATER FLOWS
作者：XUE-MING QIAN, HONG ZHU, CHUN-LAI FENG, PEI ZHU, HAN LI, WEI XIN, GANG CHEN
年份：2004
摘要：The main step of water characteristic analysis by image measurement is counting the bubbles number accurately and quantitative analysis of the bubble characteristics. One of the main reasons which influence the accuracy of analysis is the existence of overlapping bubbles. An overlapping bubble splitting method is proposed in this paper. Firstly, the convex hull of the overlapping objects is obtained. Secondly, the candidate concavities are founded on the contour of the object in each concave residuum after iterated searching and then departing point pairs of the overlapping bubbles are obtained by matching based on middle axis (MA). Finally, an optimal splitting conic can be gained by minimum mean square error (MMSE) ellipse fitting with constrains of concavities, which will ensure the accuracy of overlapping area calculation. Experimental bubbles efficiently and improve the accuracy of bubble characteristic analysis in aerated water flows.
关键词：Aerated Water Flows, Overlapping Bubbles, Convex Hull, Concavity, Curve Fitting, image processing
文件大小：1.12MB
 |
题目：一种基于多信息综合的人脸跟踪算法
作者：冯春来 朱虹 李钦 钱学明
年份：2004
摘要：随着智能监视系统得发展需求，人脸跟踪作为智能监视系统中的一类特殊对象的跟踪方法，在跟踪时对环境的适应性要求很高。文章提出了一种基于多信息综合特征的，在变动场景下，对人脸进行跟踪的算法。为了使人脸跟踪在环境发生变化的情况下，可以进行有效跟踪，算法中用人脸区域内部的颜色信息、亮度梯度信息等获得综合的判别特征。在跟踪时，对人脸的大小、朝向的变化以及光线变化，背景物等的干扰均有较强的鲁棒性。实验结果表明，算法在摄像机转动、仰俯、光线变化、人头晃动以及背景颜色分布与人脸近似等情况下可完成有效跟踪。
关键词：人脸跟踪，颜色直方图，椭圆梯度，梯度直方图
文件大小：1.24MB
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