An Efficient Object-Based Error Concealment algorithm for MPEG-2 video transmission
نویسندگان
چکیده
The MPEG-2 video compression standard is commonly used in real-time video transmission. In real-time video transmission, a little bit error can cause huge data lost in the video sequence. The errors and data loss degrade the quality of video. The error concealment method is useful to overcome the errors in the broken slice of MPEG-2. In this paper, we present an efficient error concealment algorithm for MPEG-2 based on the object-based motion vector recovery method. The method is a temporal error concealment method for P-frame. We use the correlation between previous and current frame to recover the errors. We will search the object in reference frame to recover motion vector and pixel values of the broken slice in current frame. The simulation results show that the proposed algorithm can efficiently improve the PSNR values of corrupted video. Keywords— MPEG-2, error concealment, temporal error concealment, motion vector, PSNR, object-based
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