Dissertation
Dissertation > Industrial Technology > Radio electronics, telecommunications technology > Basic electronic circuits > Modulation technique and the modulator,demodulator and the demodulator > Encoder

Transplantation and Optimization of H.264 Encoder Based on DSP

Author YangFangFang
Tutor ZhaoYiGong
School Xi'an University of Electronic Science and Technology
Course Pattern Recognition and Intelligent Systems
Keywords H.264 standard Complexity Analysis Blackfin DSP Optimization
CLC TN762
Type Master's thesis
Year 2007
Downloads 472
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H.264/AVC is the latest video coding international standard developed jointly by ITU-T VCEG and ISO / IEC MPEG , is one of the hot issues of the research areas of image communication . H.264 video coding layer (VCL) with a lot of new technologies to greatly improve the encoding performance . But this is doubling the cost of complexity , which makes H.264 faces enormous challenges in the real-time video encoding and transmission applications . The use of high-performance digital signal processor (DSP) to implement H.264 real - time encoder is a quick and effective way to contribute to the rapid popularization and application of the H.264 video standard . The ADI Blackfin561 a high-performance digital signal processor with a clock speed of 600 MHz . This article as the hardware platform to explore the H.264 encoder effective in resource - limited DSP platform . Articles Select JM85 as a reference, explains the entire process of the H.264 encoder C level optimization algorithm , and subsequent in - depth profiling algorithm based on the impact of the neck portion of the coding bit rate study Search Algorithm pathway , in the motion estimation the improved method ; transplantation and optimization of improved code in the PC to the DSP's on this basis , according to the characteristics of the selected DSP chip , right after transplantation procedures C language level and assembly language level optimization . , by the configuration of the Memory Cache applications and DMA are several ways to complete H.264 encoder DSP transplant

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