High-speed real-time processing arithmetic entropy coding system based on JPEG2000
A real-time processing and entropy coding technology, applied in the field of image processing, can solve problems such as chip design difficulties, low processing speed, and increased implementation complexity, to overcome complex operations and serial operations, improve coding speed and efficiency, and avoid Effects of coding system pauses
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[0035] The technical key of the present invention is to predict the coding symbols of the arithmetic entropy coding system, and adopt a specific probability prediction table structure to realize double-symbol parallel coding, so as to improve coding speed and efficiency. Its coding system adopts Xilinx ISE 9.1 integrated development software and VHDL, Verilog HDL language, and realizes on Xilinx company's model XC2V3000-6BG728 FPGA.
[0036] refer to figure 1 , the high-speed real-time processing arithmetic entropy coding system based on the JPEG2000 standard proposed by the present invention includes: a probability interval value predictor, a code value predictor, a code stream buffer and an output selector. in:
[0037] The probability interval value predictor firstly judges the coded symbol type according to the first context symbol pair (CX0, D0) and the second context symbol pair (CX1, D1) input in parallel, and uses different processing units for different types of code...
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