To satisfy the high quality image compression requirement, the new JPEG XR compression standard is introduced. The analysis and architecture design with VLSI architecture of JPEG XR encoder are proposed in this paper which can encode 4:4:4 1920 x1080 high definition photo in smooth. According to the simulation results, the throughput of the proposed design can encode 44.2 M samples/sec. This design can be used for digital photography applications to achieve low computation, low storage, and high dynamical range features. 1
An MPEG-4 video coding SOC design is presented in this paper. We adopt platform-based architecture with an embedded RISC core and efficient memory organization. A motion estimator supporting predictive diamond search and spiral full search is implemented for compromise between compression performance and design cost. The proposed data reuse scheme reduces required memory access bandwidth. For texture coding path, an interleaving DCT/IDCT scheduling with substructure sharing technique is proposed. Several key modules are integrated into an efficient platform in hardware/software co-design fashion. The cost-efficient video encoder SOC consumes 256.8 mW at 40 MHz and achieves real-time encoding of 30 CIF (352×288) frames per second.
This paper presents an LSI design for MPEG-4 video coding. We adopt platform-based architecture with an embedded RISC core and efficient memory organization. A fast motion estimator architecture supporting predictive diamond search and spiral full search with halfway termination is implemented to make good compromise between compression performance and design cost. Several key modules are integrated into an efficient platform in hardware/software co-design fashion. With high degree of optimization in both algorithm and architecture levels, a cost-efficient video encoder LSI is implemented. It consumes 256.8mW at 40MHz and achieves real-time encoding of 30 CIF (352x288) frames per second.
In this paper, the bitstream parsing analysis and an efficient and flexible hitstream parsing processor are presented. The bitstream parsing analysis explores the critical part in bitstream parsing. Based on the result, the novel approaches to parse data partitioned bitstreams are presented. An efficient instruction set optimized for bitstream processing. cspecially for DCT coefficient decoding, is designed and the processor architecture can be programmed for various video standards. It has been integrated into an MPEG-4 video decoding system successfully and can achieve real time bitstream decoding with hitstream coded under 4CIF frame size with 30 fps, 8Mbps, which is the specification of MPEG-4 Advanced Simple Profile Level 5.
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