Binary Image Subtraction
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I am subtracting one binary image away from another image. But the results seem to be the inverted answer. Bascially in hex 17D8 - 0A5A = D7E but the answer Matlab writes out is FFFFFFFFFFFFF282
This is the same decimal answer except it is negative instead of positive, so: 3454 = D7E & -3454 = FFFFFFFFFFFFF282
Is there some sort of overload? and how do I overcome this problem? As it affects any other image processing I need to preform.
[FileName, PathName] = uigetfile({'*.jpg;*.tif;*.png;*.gif;*.bin','All Image Files';...
'*.*','All Files' },'mytitle');
Full = fullfile(PathName, FileName)
fid = fopen(Full);
samevals = fread(fid, [2048, 2048], 'uint16');
fclose(fid);%load binary
X = samevals;
[FileName2, PathName2] = uigetfile({'*.jpg;*.tif;*.png;*.gif;*.bin','All Image Files';...
'*.*','All Files' },'mytitle');
Full = fullfile(PathName2, FileName2)
fid2 = fopen(Full);
new = fread(fid2, [2048, 2048], 'uint16');
fclose(fid2);%load binary
frametempt=double(X) - double(new);
2 个评论
Walter Roberson
2012-2-9
The most obvious possibility would seem to be that you are not subtracting in the order that you think you are.
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