how to convert a cell array into an image?
10 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
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
0 commentaires
Réponse acceptée
Guillaume
le 5 Oct 2014
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])));
12 commentaires
Plus de réponses (1)
Image Analyst
le 4 Oct 2014
Modifié(e) : Image Analyst
le 4 Oct 2014
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, []);
8 commentaires
Guillaume
le 5 Oct 2014
Your image is a png image, not a jpeg. The code I posted in my answer, with the typecast fix, should decode it.
Voir également
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!