how to convert a cell array into an image?
조회 수: 10 (최근 30일)
이전 댓글 표시
I fetched an image from sql database but its returning format is like i=[75839 int8] how can i convert it into image plz help me out
댓글 수: 0
채택된 답변
Guillaume
2014년 10월 5일
If the bytes you get are truly a jpg image, you may be able to decode it with java:
jimage = javax.imageio.ImageIO.read(java.io.ByteArrayInputStream(d));
height = jimage.getHeight;
width = jimage.getWidth;
pixels = reshape(typecast(jimage.getData.getDataStorage, 'uint8'), [3,width,height]);
img = cat(3, ...
transpose(reshape(pixels(3,:,:), [width,height])), ...
transpose(reshape(pixels(2,:,:), [width,height])), ...
transpose(reshape(pixels(1,:,:), [width,height])));
댓글 수: 12
추가 답변 (1개)
Image Analyst
2014년 10월 4일
편집: Image Analyst
2014년 10월 4일
You need to take the (badly-named) i and reshape it into a 2 or 3D array, but you need to know the number of rows and columns.
cellContents = cell2mat(i); % Convert from cell to double.
grayImage = reshape(cellContents, [rows, columns]);
imshow(grayImage, []);
댓글 수: 8
Guillaume
2014년 10월 5일
Your image is a png image, not a jpeg. The code I posted in my answer, with the typecast fix, should decode it.
참고 항목
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!