identifying objects in a picture containing several objects
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I have a picture that contains more obiecte.Obiectele I have separated into smaller pictures (cut from full size) must make a sequence of code that I find an object and make a circle around him. 10x
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Accepted Answer
Chandra Kurniawan
on 21 Dec 2011
Hello,
Why don't you use command 'normxcorr2' from Matlab??
Here I have a sample code :
clear; clc;
I = imread('office_5.jpg');
J = I(192:250,180:220,:);
imshow(J);
c = normxcorr2(J(:,:,1),I(:,:,1));
[max_c, imax] = max(abs(c(:)));
[ypeak, xpeak] = ind2sub(size(c),imax(1));
corr_offset = [(xpeak-size(J,2)) (ypeak-size(J,1))];
figure, imshow(I); hold on;
rectangle('position',[corr_offset(1) corr_offset(2) 50 50],...
'curvature',[1,1],'edgecolor','g','linewidth',2);
The object is :
And the correlation result is :
3 Comments
Sara
on 12 Apr 2017
No sorry . i mean J at the coding above . This J = I(192:250,180:220,:); . How to get the value?
More Answers (5)
Chandra Kurniawan
on 21 Dec 2011
Just the same code.
You just need to change the I and J with your 'reference' image and the object
clear; clc;
I = imread('di-5Y01.jpg');
object = imread('di-FNMJ.jpg');
c = normxcorr2(object(:,:,1),I(:,:,1));
[max_c, imax] = max(abs(c(:)));
[ypeak, xpeak] = ind2sub(size(c),imax(1));
corr_offset = [(xpeak-size(object,2)) (ypeak-size(object,1))];
figure, imshow(I); hold on;
rectangle('position',[corr_offset(1) corr_offset(2) 30 60],...
'curvature',[1,1],'edgecolor','g','linewidth',2);
And the result :
5 Comments
Arash
on 9 Jul 2012
Hi Chandra,
How about the objects that have some rotation, I mean consider some frames and in each frame the object has a little rotation and translation, is it possible to detect the object in all of the frames? if yes How?
Thanks in advance,
Arash
jeyshree
on 7 Aug 2013
hi, i used the above code.i downloaded an image from http://imageshack.us/photo/my-images/825/obiect10inpoza.png/ and used it instead of di-5Y01.jpg.similarly i downloaded the image in URL http://imageshack.us/photo/my-images/690/obiect5.jpg/ and used it instead of di-FNMJ.jpg.only i changed the images used.but still it is not detecting the cup from the image.what shall i do?
Tomescu
on 21 Dec 2011
1 Comment
Image Analyst
on 21 Dec 2011
This is not an answer. This should be a comment on someone's answer, which you did above, so you can delete this "answer" lest someone respond to it and then you mark this (your follow-up comment) as the solution.
sneha
on 18 Apr 2012
hi....experts.....sneha here..........very amazing detection of objects.....i also worked on license plate detection of car...can u give me this type of code for detecting car license plate...please.........m waitng for reply............
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Francesco Violo
on 28 Jul 2015
Hello, I am Francesco , for a university work let me know if you can extract from a video the license plates of cars , and then get a file of alphanumeric text . Thank you, you can contact me also on francescoviolo8@yahoo.it
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