The Video Error Concealment Algorithm

Using Moving Correlated BMA with Data Reuse Issue

 

*         Introduction

*         VOD(Video on Demand)

*          Video compression must be used in this kind of application for bandwidth efficiency.

*          The internet network is an error prone environment.

*          The packet loss and bit error induces error propagation in the video frame.

 

*         Error in the video

*          Original Video sequence

*          Video Compression standard MPEG1,MPEG2,MPEG4,H.263…

  

 

*         Feature

 

*         Lower search operation is achieved.

*         Better recover video quality within small search range is obtained.

 

*         Results

*         Experiment Result

 

The temporal replacement is replaced by the collocated MB in the reference frame [1], the EBMA is proposed in [2], and the proposed is our proposed algorithm.

The Table 1 describes the average PSNR presentation under packet loss rate 1%, 3% and 5% respectively.

Table. 1 Average PSNR diagram

Unit ：dB

1%

3%

5%

Temporal Replacement [1]

34.4778

32.5903

30.9163

EBMA [2]

34.6964

32.9962

31.3918

Proposed

34.9044

33.4638

31.9612

 

Note that the EBMA and proposed algorithm is under the full search range in ±4 pixels. By this objective simulation, our algorithm has better quality.

It can also referred as the subjective simulation with frame number of 87 and shown in Fig. 6.

 

 

*         The Search Range Issue

In the EBMA and our proposed algorithm, they apply the full search range with better concealment performance; however the search range would dominate the   

computational complexity.

Fig. 7 illustrates our proposed algorithm has better quality than EBMA under multiple search ranges.

 

 

 

Made by 林玉峰