JVET-C0044 Response to B1002 Call for test materials: Five test sequences for screen content video coding [J. Guo, L. Zhao, T. Lin (Tongji Univ.), H. Yu (Futurewei)]

Was presented in JVET plenary Tuesday afternoon.

This contribution provided five new screen content test sequences for future video coding standardization activity. These test sequences can be categorized as TGM (text and graphics with motion) content. It was reported that the five test sequences represent a wide range of typical screen content commonly seen in cloud/cloud-mobile computing, remote desktop, PC-over-IP, interactive TV and so on. It was also reported that this new content exhibits different coding characteristics when compared with the existing SCC test sequences and thus are useful to evaluate future SCC tools. It was reported that the five sequences are difficult to code and that, using the HEVC-SCC CTC AI lossy coding configurations and HM16.6-SCM5.2 reference software, the total compression ratio and average PSNR of the five sequences are 46.7 and 45.26 dB, respectively. On the other hand, the total compression ratio and average PSNR of the eight TGM sequences in HEVC-SCC CTC are reportedly 69.6 and 46.96 dB, respectively, which are 49% and 1.7 dB higher than that of the five new sequences. It is also reported that the five sequences have coding mode distribution statistics quite different from the eight TGM sequences in the current HEVC-SCC CTC.

According to the results, the five new test sequences seem to be more difficult to code than the current test set used in JCT-VC. It is also observed that IBC and palette are used more frequently.

According to advice from parent bodies, JVET should not put special emphasis on assessing the performance with computer-generated content. No action at this moment was taken to add a new class of test material.