What is this code doing exactly?

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Febin Benjamin
Febin Benjamin il 30 Lug 2013
Here's a code that i got from a random source..... Please explain the logic of this above given code.... I am not getting the logic at all.... Please help....
for a=1:20
if a<=9
b=char(a+47);
elseif a>9 && a<20
b=strcat(char(49),char(a-10+48));
else
b=strcat(char(50),char(48));
end
filemane=strcat('D:\my doc\study docs\Project-VP\code\',b,'.tif');
fluent=imread(filemane,'tif');
filename2=strcat('D:\my doc\study docs\Project-VP\code\',b,'.tif');
flowvis=imread(filename2,'tif');
size_fluent=size(fluent);
size_flowvis=size(flowvis);
for k=1:size_fluent(1)
for l=1:size_fluent(2)
for m=1:size_fluent(3)
if l<(260+(4*a)) || l>(948+(4*a))
%l=302, l=988
overlap(k,l,m)=fluent(k,l,m);
else
if k<43 || k>706
overlap(k,l,m)=fluent(k,l,m);
elseif fluent(k,l,1)>=200 && fluent(k,l,2)>=200 && fluent(k,l,3)>=200
overlap(k,l,m)=flowvis(k-42,l-(259+(4*a)),m); %l-301
else
overlap(k,l,m)=fluent(k,l,m);
end
end
end
end
end
filename3=strcat('D:\my doc\study docs\Project-VP\code\frames\output_',b,'.tif');
imwrite(overlap,filename3,'tif','Colorspace','rgb','Compression','none');
disp(strcat('File ',b,' processed'));
end
  2 Commenti
Jan
Jan il 30 Lug 2013
This is a very vague question. Are you asking also, what e.g. "if k<43 k>706" does?
The code is written in a strange way. E.g. b=strcat(char(49),char(a-10+48)); is an obfuscated version of: b = '20'. A clean sprintf command would be much smarter than the first 8 lines.
Febin Benjamin
Febin Benjamin il 30 Lug 2013
Exactly! thats what confused me! The code is completely abstruse! I found it in a pdf file which named this program as compare.m All i cud comprehend was that it is comparing two images.... but on what basis?? this code kept me awake yesterday! :(

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Iain
Iain il 30 Lug 2013
looks like its opening some pairs of files and overlaying some parts of the second image on the first, and saving the result.

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