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how to convert output to integer?

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fahim GH
fahim GH 2015-10-4
评论： Walter Roberson 2015-10-4
hi i wrote the following code for converting image to textfile but the arrays of output are hexadecimal in the textfile.how could I convert them to integer??? tnx
a= imread('D:\IP1\12.jpg');
I=rgb2gray(a);
% iD conversion
b = I(:);
% New txt file creation
fid = fopen('D:\IP1\in2.txt');
% Hex value write to the txt file
fprintf(fid, '%x\n', b);
% Close the txt file
fclose(fid)

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回答（1 个）

James Tursa
James Tursa 2015-10-4
Use %d instead of %x for the output format.
  2 个评论
fahim GH
fahim GH 2015-10-4
thanks for answering,i have this error now
Error using fprintf Invalid file identifier. Use fopen to generate a valid file identifier.
Error in imgtotxt (line 8) fprintf(fid, '%d\n', b);
Walter Roberson
Walter Roberson 2015-10-4
[fid, message] = fopen('D:\IP1\in2.txt', 'wt');
if fid < 0
error('Failed to open because: %s', message);
end

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