Search - Arithmetic coding using matlab

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[Special Effects] 49636971mathcode DL : 0: 自己用matlab写的算术编码的程序，信源为二元信源,信源序列、码长均可自定义-Using matlab to write their own arithmetic coding procedures for the binary source-source, source sequence, code length can be custom
Date : 2025-12-22 Size : 5kb User : 李金荣
[Special Effects] UPLOAD_LY4 DL : 0: 通过MATLAB的程序解决相应图上处理中熵值和概率的问题-Adaptive Arithmetic coding. A source generates symbols from alphabet {A, B, C, D}. Probabilities of occurrence of the symbols are initially estimated as: Pr(A)=Pr(B)=0.25, Pr(C)= 0.2, and Pr(D)=0.3. After 100 generated symbols, the statistics changes to Pr(A)= 0.1, Pr(B)=0.3, Pr(C)= 0.4, and Pr(D)=0.2. After 300 symbols, statistics is: Pr(A)=0.6, Pr(B)=0.05 Pr(C)=0.1, and Pr(D)=0.25. Randomly generate a source sequence of length 500 symbols drawing the symbols from the true source distributions. That is, for the first 100 symbols, next 300 symbols, and last 100 symbols use the three distributions above, respectively. Encode this sequence using adaptive arithmetic coding that adaptively changes frequency of the source symbol occurrence every 100 symbols. Decode the sequence and compare the decoded and original sequences. Find the efficiency of the code.
Date : 2025-12-22 Size : 7kb User : 李渊
[Special Effects] image-coding DL : 0: 用matlab实现算数编码、哈弗曼编码以及LZW编码（能够区分大小写和数字进行编码）含测试文本和结果-Using matlab realize arithmetic coding, Huffman coding and LZW coding (case-sensitive and numbers can be encoded) containing test text and results
Date : 2025-12-22 Size : 6kb User : 文闯