Abstract:

In order to capture and track the target accurately in complex scene, combined with the target feature, video tracking algorithm which based on gradient projection is put forward. The algorithm based on prior knowledge of object, we open window for the video and conduct gradient projection in the window to obtain the position information of object areas. By feature extraction and morphological analysis of target extracting feature parameters, to determine goals and capture. Using the object centroid coordinates to update the information of tracking window and achieve the target tracking.The results fully prove that the method reduces the amount of computation, gets strong real-time and tracks target accurately and stably, for the scene of experiment illumination change and suspected object interference has a strong robustness.

Key words: video tracking, gradient projection, feature extraction, target detection