An Edge Based Visual Tracking System for Target within Complex Environment

• Main Authors: En-Wei Huang, 黃恩暐
• Other Authors: Li-Chen Fu
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/58405778358372638237

碩士 === 國立臺灣大學 === 電機工程學研究所 === 87 === In this thesis, a visual tracking system is proposed. The whole system is divided into two parts. The first part is the detection of the target, and the second part is the trajectory filtering. To detect the target in the image, we use the method based on the distribution of edges. In this method, the template is edge based, and the distribution of edges of the image is extracted, so that the two are convolved to find the location of the target. The method is more reliable than the traditional template matching in the complicated scene. After finding the target in the image, we will control the camera platform to keep the target about the center of the image. The location of the target in the world coordinate frame is first transformed to the orientation relative to the camera. Where by a tracking algorithm based on the IMM (Interacting Multiple Model) algorithm is developed. The algorithm estimates the angular velocity and the angularity acceleration of the target relative to the camera, which along with some error information in the images are used to control the camera platform. Finally, a number of experiments are conducted to validate our visual tracking system for tracking the targets in a complicated scene.