Zoran Milicevic

H.264/AVC standard: A proposal for selective intra- and optimized inter-prediction

This paper seeks to provide a selective intra-prediction and optimized inter-prediction methods in H.264/AVC standard. In order to reduce the temporal and spatial redundancy more effectively, motion compensation uses variable block sizes, while directional intra-prediction investigates all available coding modes to decide the best one. When the rate-distortion (R-D) optimization technique is used, an encoder finds the coding mode having minimum R-D cost. Due to the large number of coding modes combinations, the decision process requires extremely high computation. To reduce the complexity, selective intra-prediction and optimized inter-prediction method for Standard Definition and High Definitions test sequences is proposed, when P and B pictures are analyzed. Simulation results show that the coding time is reduced more than 15% in average, depending on Quantization Parameter (QP) values, when reducing the number of intra- and inter-candidate modes. However, there is negligible loss in term signal-to-noise ratio (SNR), until bit rate values slightly fluctuate depending on QP values.

HEVC performance analysis for HD and full HD applications

This paper seeks to provide objective and subjective performance analysis for High Efficient Video Coding (HEVC) HM-15.0 reference coder for High Definition and full High Definition test sequences in different picture structures. The HEVC coder is tested for the fixed Quantization Parameter (QP) value, when Main profile with P and hierarchical B pictures, respectively, is used. Simulation results have shown differences in bit-rate and encoding time saving, while SNR is providing quit similarity in output values, when IPPP and IBBB picture formats are compared.

High Efficiency Video Coding step forward in video compression improvement

This paper seeks to provide coding efficiency for emerging High Efficient Video Coding (HEVC) standard. We compared some important techical features and characteristics of HEVC and H.264/AVC standard. The idea is to show improvements in HEVC video coding design in objective and subjective way.

Video coding standardization process: More High Efficient Video Coding less H.264/AVC

This paper seeks to provide comparison between actual H.264AVC video coding standard and future High Efficient Video Coding (HEVC) standard. We compared some important tools features, like block size, transform coding, intra/inter prediction, entropy coding, etc. The idea is to show improvements in HEVC video coding design and possibility to be potentially used in different applications.

Performance of high efficiency video coding (HEVC) HM-16.6 encoder

This paper seeks to provide performance analysis for High Efficiency Video Coding (HEVC) HM-16.6 reference coder for different resolution test sequences and picture structures. The HEVC coder is tested for the fixed Quantization Parameter (QP) value in lowdelay configurations, when Main profile with P and hierarchical B pictures, respectively, is used. Simulation results have shown differences in bit-rate and encoding time saving, as well as small difference in SNR values for luma component of picture. Beside objective results, subjective video assessments for all tested sequences are presented, too.

MPEG video deployment in digital television: HEVC vs. AVC codec performance study

The coding efficiency of three generations of video coding standards is compared by means of PSNR and subjective testing results. A unified approach is applied to the analysis of designs of MPEG-H HEVC, H.264/MPEG-4 AVC, and H.262/MPEG-2 Video reference implementation. The results of subjective tests for selected HD format sequences indicate that HEVC encoders can achieve equivalent subjective broadcast quality as encoders that conform to AVC when using approximately 50% less bit rate on average. Bitrate reduction based on PSNR and complexity based on encoding/decoding time of HM8 MP vs. AVC HP vs. MPEG-2 MP are tested at bitrates of 2, 3, 4.5, 7 and 10 Mbit/s using the encoding constraints typical for broadcasting applications.

Subjective video quality assessment in H.264/AVC video coding standard

This paper seeks to provide an approach to subjective video quality assessment in H.264/AVC standard. For this purpose, special software program is developed for subjective quality estimation of all tested sequences using the recommendation ITU-T P.910 which is convenient for testing different multimedia applications. Using the subjective analysis in processed test sequences, it is confirmed that there exists a small difference in signal-to-noise ration, i.e., video quality between sequence in reference source format and sequence under the test condition.

B Frame Processing Modeling in H.264/AVC

This paper presents combined early inter skip prediction and selective intra prediction mode decision algorithm for B frame processing in H.264/AVC, which reduces the computational time savings (up to 43%) with negligible loss of rate-distortion performance. Also, in order to estimate SNR results in subjective way, subjective video quality assessment is used for all sequences under test.