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how to convert a cell array into an image?

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kanwal
kanwal 2014-10-4
评论： jumana eltrabelsi 2022-4-14
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

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Guillaume
Guillaume 2014-10-5
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])));
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Image Analyst
Image Analyst 2014-10-4
编辑：Image Analyst 2014-10-4
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, []);
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Guillaume
Guillaume 2014-10-5
Your image is a png image, not a jpeg. The code I posted in my answer, with the typecast fix, should decode it.
kanwal
kanwal 2014-10-6
yeah u r right it was png. but its not decoding

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