Matlab讀取BMP檔案代碼

function BMPReader(strPathName)</p><p>fFile = fopen(strPathName, 'rb');<br />[data, count] = fread(fFile);</p><p>%offset<br />nOffset = 0;<br />for i = 1:4<br /> nOffset = nOffset + bitshift(data(10+i), (i-1)*8);<br />end</p><p>%width<br />nWidth = 0;<br />for i = 1:4<br /> nWidth = nWidth + bitshift(data(18+i), (i-1)*8);<br />end</p><p>%height<br />nHeight = 0;<br />for i = 1:4<br /> nHeight = nHeight + bitshift(data(22+i), (i-1)*8);<br />end</p><p>%bit count<br />nBitCount = data(29) + bitshift(data(30), 8);</p><p>%bmp格式儲存是從圖片的下到上<br />img = zeros(nHeight, nWidth);<br />img = reshape(data(nOffset+1:end), nWidth, nHeight);<br />img = flipud(img'); %先轉置，然後上下交換<br />imshow(img, [0, 255]);</p><p>%close file<br />fclose(fFile);<br />