Time stamp detection and recognition in video frames

Time stamp superimposed on the video frames can be used as indices for video indexing and retrieval systems. Some applications use it for speed detection of objects. In this paper, we propose a time stamp detection approach based on edge detection method. Furthermore, we apply temporal properties of video frames so that time stamp can be located quickly. We also propose our digit recognition module to test the performance. Experimental results show that our approach can detect time stamp location accurately. The proposed approach can discriminate between date and time, and it can extract time with sub-second of precision. The recognition rate is also high enough to be used practically.