MATLAB學習（3）

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matlab讀取映像並轉化為灰階映像

image = imread('C:\Users\Administrator\Desktop\映像降噪\src\original image\100.png');image = rgb2gray(image);

image = imread('C:\Users\Administrator\Desktop\映像降噪\src\original image\1.bmp');image = rgb2gray(image);//% figure ,imshow(image);//% dlmwrite('filename.txt', image, ',', 0, 0) //% image = image';figure ,imshow(image);

fid  = fopen('exp.txt','w');    fprintf(fid,'%x ',image);    fclose(fid); //%將映像iamge依照十六進位寫入exp.txt 檔案fid1 = fopen('exp.txt','r');  varargout = fscanf(fid1, '%x',[256,256]);    fclose (fid1);     varargout =  uint8(round(varargout))                      //%將讀取的映像double類型轉換為uint8figure,imshow(varargout),title('show varargout');

fid2 = fopen('exp1.txt','w');   fprintf(fid2,'%d ',image);   fclose(fid2); //%將映像iamge依照十  進位寫入exp1.txt檔案A =load('exp1.txt');                                                       //%讀取exp.txt資料image2 = zeros(256,256,'uint8');for i = 1 : 256    for j = 1 : 256        image2(j,i) = A((i-1)*256+j);                                      //%讀取一維數組1x65535 到矩陣【256 256】    endendfigure,imshow(image2),title('show image2');