matlab实现图像无损压缩

function [] = ImageDecoding(imageData) load(imageData,'codingMatrix'); [M,N] = size(codingMatrix); M = M/3; codingMatrix = mat2cell(codingMatrix,[M,M,M],N); codingMatrixR = cell2mat(codingMatrix(1,1)); codingMatrixG = cell2mat(codingMatrix(2,1)); codingMatrixB = cell2mat(codingMatrix(3,1)); decodingMatrixR = zeros(M,N); decodingMatrixG = zeros(M,N); decodingMatrixB = zeros(M,N); for i = 1:M for j = 1:N if i == 1 decodingMatrixR(i,j) = codingMatrixR(i,j); decodingMatrixG(i,j) = codingMatrixG(i,j); decodingMatrixB(i,j) = codingMatrixB(i,j); else decodingMatrixR(i,j) = decodingMatrixR(i-1,j)+codingMatrixR(i,j); decodingMatrixG(i,j) = decodingMatrixG(i-1,j)+codingMatrixG(i,j); decodingMatrixB(i,j) = decodingMatrixB(i-1,j)+codingMatrixB(i,j); end end end decodingImageMatrix = zeros(M,N,3); decodingImageMatrix(:,:,1) = decodingMatrixR; decodingImageMatrix(:,:,2) = decodingMatrixG; decodingImageMatrix(:,:,3) = decodingMatrixB; imshow(uint8(decodingImageMatrix)); end