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Text to Image conversion

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Lalitha Sivaraman
Lalitha Sivaraman on 27 Sep 2013
Answered: Image Analyst on 27 Sep 2013
when i try to run this code with text file contain binary values that i attach..,
% Text to image conversion
% % Open the txt file
fid = fopen('Big_Picture.txt', 'r');
% Scann the txt file
img = fscanf(fid, '%x', [1 inf]);
% Close the txt file
fclose(fid)
% restore the image
outImg = reshape(img,[128 128]);
outImg = outImg';
figure, imshow(outImg,[])
it shows error :
Error using reshape
To RESHAPE the number of elements must not change.
Error in hexnew (line 10)
outImg = reshape(img,[128 128]);
pls mention What mistake that i had done ??

Answers (2)

Walter Roberson
Walter Roberson on 27 Sep 2013
Why are you assuming that the file has exactly 128 * 128 hex numbers in it? Did you check length(img) ?
  2 Comments
Lalitha Sivaraman
Lalitha Sivaraman on 27 Sep 2013
image size is 256x120
Walter Roberson
Walter Roberson on 27 Sep 2013
Could you show an example text line?
If the image is 256 x 120 and you were to read it in successfully, then you are not going to be able to reshape it as 128 * 128 . You would have more hope if the image had been 256 x 128 instead of 256 x 120: in such a case there might be a reason why two adjacent elements in the input should become one element in output.

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Image Analyst
Image Analyst on 27 Sep 2013
Try
img = fscanf(fid, '%x', [256, 120]);
then
resizedImage = imresize(img, [128, 128]);

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