How do i convert a bmp or jpeg image to a hexadecimal
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b=imread('frog in the rain.bmp'); % 24-bit BMP image RGB888
k=1;
for i=721:-1:1 % image is written from the last row to the first row
for j=1:481
a(k)=b(i,j,1);
a(k+1)=b(i,j,2);
a(k+2)=b(i,j,3);
k=k+3;
end
end
fid = fopen('frog in the rain.hex', 'wt');
fprintf(fid, '%x\n', a);
disp('Text file write done');disp(' ');
fclose(fid);
Error using imread>get_full_filename (line 568)
File "frog in the rain.bmp" does not exist.
Error in imread (line 377)
fullname = get_full_filename(filename);
1 Comment
Walter Roberson
on 20 Apr 2019
The problem is on the first line. You do not have a file named 'frog in the rain.bmp' in the current directory or anywhere on the MATLAB path. Consider adding the full path including the directory name.
Answers (1)
Image Analyst
on 20 Apr 2019
See my attached demo. Change %d to %x and it should write out the location and values to a list in a text file.
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