Abstract:

An error concealment algorithm for H.264 using Newton interpolation in the hybrid field is presented. Two motion vectors are obtained by interpolation in the spatial field and in the temporal field. A hybrid interpolation model is constructed to get the optimal motion vector of the lost motion vector by setting up a table for interpolation coefficients and judging with boundary match algorithm. Simulation results show that this scheme can highly improve the quality of reconstructed video and obtain a gain of about 0.3~0.8dB in PSNR, compared with Lagrange interpolation in the spatial field under the condition of Packet Loss Rate with 10%.

Key words: Lagrange interpolation, Newton interpolation, interpolation in two fields, motion vector