sub-band coding 中文意思是什麼
sub-band coding
解釋
子帶編碼-
The method includes split originality image region, filter, separately coding the lowest frequency sub - band coefficient, adaptively setting threshold of different image region, setting up flag matrix, and filtering after decoding to eliminate domino effect of split
這種編碼方法主要包括:對原始圖像進行分塊、濾波;對最低頻子帶系數單獨編碼;對各塊圖像自適應地進行閾值設置;設立標志矩陣;解碼后進行濾波消除分塊效應。 -
In the next, we discuss the system of the meg - 1 layer i. the paper centers on the two kernel sub - parts : filtering coding and psychoacoustic model, do some research work in sub - band coding ( cbc ) theory and the relate theory such as quadrature mirror filter ( qmf ) and analyse sub - band filter ; also do research work in psychoacoustic theory especially the part related to the mpeg - 1 layer i. in the third chapter, introduce the ti tms320c6000 series dsps and their characteristics, also about the software development flow and the ti dsp / bios operating system of it. the forth chapter is the most important, firstly, according the algorithm flow in protocol, using c language validate the algorithm ; then, transplant and optimize the coding in dsp. in the processing of optimize, acording the assembler program characteristic of ti dsp, the paper put forward the analyse sub - band filter dsp optimization algorithm base on the eight spot idct. the algorithm has been optimize have greatly improved the work efficiency. make use of the technology of the dsp / bios host channels, data io pipe, software interrupt, we implement the musicam algorithm base on dsp / bios
論文首先對當前語音編碼技術的發展、分類以及mpeg系列音頻標準作了介紹;接著在第二章,給出了layer的musicam ( masking - patternuniversalsubbandintegratedcodingandmultiplexing )演算法的系統組成,圍繞分析子帶濾波器和心理聲學模型兩個核心模塊,深入研究了子帶編碼工作原理、比特分配及子帶編碼中用到的正交鏡像濾波器和分析子帶濾波器;探討了心理聲學基本原理和mpeg . 1layer所用到的心理聲學模型。第三章對titms320c6000系列dsp作了簡介,介紹了6000系列dsp結構特點、 c6000dsp軟體開發流程和tidsp / bios操作系統。第四章是本文的重點,首先根據協議給出的演算法用標準c語言編程實現並調試通過。 -
Sub - band coding sbc
子帶編碼 -
Sub - band coding sb
子帶編碼 -
The proposed method compresses images based on sub - band coding, and then exacts compressed images features such as color, texture and shape
本系統直接對小波壓縮圖像進行分析,提取壓縮域低頻圖像的顏色、紋理、形狀特徵,然後通過判別函數判別圖像的相似性。
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