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In order to reduce the bit rate of video signals, motion compensation prediction is applied in modern video coding technology. This is a form of temporal redundancy reduction in which the current coding frame is predicted by a motion compensated prediction from some other already decoded frames according to motion vector. As real motion has arbitrary(More)
This paper introduces the architecture of an AVS (audio video coding standard working group of China) hardware decoding system. The system includes system layer decoding, video decoding and audio decoding. It supports 720p/1080i HD (high-definition) format real-time decoding. A VLSI chip is designed by using this architecture.
A spatio-temporal autoregressive model is proposed in this paper to address the problem of frame rate up conversion. Every pixel in a skipped frame is generated as a linear combination of pixel values from forward and backward reference frames. At the beginning of the presented scheme, the coarse model parameters are computed according to the given initial(More)
HEVC (High Efficiency Video Coding) has recently been published as the next generation video coding standard. Compared with previous standards, the coding efficiency is greatly improved at the cost of much higher codec complexity. On the other hand, ARM with SIMD (Single Instruction Multiple Data) instructions is widely deployed on mobile platform, which(More)
H.264/AVC is the latest standard for video coding drafted jointly by the ISO/IEC Moving Picture Experts Group and the ITU-T Video Coding Experts Group. H.264/AVC provides up to 50% gains in compression efficiency over a wide range of bit rates and video resolutions compared to previous standards. On the other hand, the decoder complexity is about four times(More)
This paper presents a novel no-reference blocking artifacts metric using selective gradient and plainness (BAM_SGP) measures for DCT-coded images. A boundary selection criterion is introduced to distinguish the blocking artifacts boundaries from the true-edge boundaries, which ensures that the most potential artifacts boundaries are involved in the(More)
— This paper proposes a spatio-temporal auto regres-sive (STAR) model for frame rate upconversion. In the STAR model, each pixel in the interpolated frame is approximated as the weighted combination of a sample space including the pixels within its two temporal neighborhoods from the previous and following original frames as well as the available(More)
This paper proposes a high efficiency memory controller for an H.264 HDTV decoder with synchronous DRAMs. As H.264 adopts tree structured (supports small block size) motion compensation, the bandwidth requirement of an H.264 HDTV decoder is higher than previous video processing algorithms. This requires to be optimized. Based on H.264 decoding data access(More)
In this paper, a motion-aligned auto-regressive (MAAR) model is proposed for frame rate up conversion, where each pixel is interpolated as the average of the results generated by one forward MAAR (Fw-MAAR) model and one backward MAAR (Bw-MAAR) model. In the Fw-MAAR model, each pixel in the to-be-interpolated frame is generated as a linear weighted summation(More)