A Study on Motion Detection in Image Sequences

• Main Authors: Chih-Ching Chen, 陳志景
• Other Authors: Kuo-Feng Hwang
• Format: Others
• Language: en_US
• Online Access: http://ndltd.ncl.edu.tw/handle/58794384564423326353

碩士 === 國立臺中技術學院 === 多媒體設計研究所 === 96 === Motion detection is a useful method in many image processing and computer vision applications. Traditional background subtraction where the classification of pixels into motion pixels and background pixels is based on thresholding the difference image between background image and current image. However, background subtraction has easy been influenced by illumination especially in dark scene. In this paper, we present a simple and robust motion detection method based on ratio image. It can detect motion object not only in bright scene but also in dark scene. We also use of Sobel operator to enhance ratio image contrast that can easy refine motion object features and use of cumulative histogram to select a threshold. Experimental results show that the proposed method has efficiency and illumination tolerance in image sequence.