Abstract
To overcome the degradation of video quality caused by transmission errors,a new temporal error concealment algorithm based on motion vector adaptive recovery was proposed,which efficiently exploited the characteristic of H.264.Firstly the Motion Vector Relative Strength(MVRS) was estimated by calculating a ratio involving the motion vectors of adjacent macro blocks.Then either minimum variance of boundary motion vectors method or polynomial interpolation method was employed to recover the lost motion vectors according to the magnitude of MVRS.The simulation results show that the proposed algorithm can highly improve the quality of reconstructed video and obtain a gain of about 0.2~2.5dB in PSNR,compared with conventional temporal error concealment algorithms in the condition of equal packet loss rate.
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