用于视频对象平面生成的运动对象自动分割

新的视频编码标准MPEG-4具有基于内容的功能。它把图像序列分解成视频对象平面(VOP),每个VOP代表一个运动对象。文中提出了一种提取运动对象的新的视频序列分割算法,算法的核心是一个对象跟踪器,它利用Hausdorff距离将对象的二维二值模型与后续帧进行匹配,然后采用一种新的基于运动相连成分的模型刷新方法对模型的每一帧进行刷新。初始的模型自动产生,再利用滤波技术滤除静止背景,最后,利用二值模型从序列中提取出VOP。

GENERATING VIDEO OBJECT PLANE BY AUTOMATIC SEGMENTATION OF MOVING OBJECTS

The new video coding standard MPEG4 is enabling content-based functionality. It decomposes sequences into video object planes (VOPs) so that each VOP represents one moving object. This paper presents a new automatic video sequence segmentation algorithm that extracts moving objects. The core of this algorithm is an object tracker that matches a two-dimensional binary model of the object against subsequent frames using the Hausdorff distance. The initial model is derived automatically and a new model update method based on the concept of the moving connected components is proposed. The stationary background is removed by a filtering technique. Finally, the VOPs are extracted from the binary model sequence.