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identifying objects in a picture containing several objects

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Tomescu
Tomescu 2011-12-21
评论： Sara 2017-4-12
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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采纳的回答

Chandra Kurniawan
Chandra Kurniawan 2011-12-21
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 :

更多回答（5 个）

Chandra Kurniawan
Chandra Kurniawan 2011-12-21
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 :
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Arash
Arash 2012-7-9
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
jeyshree 2013-8-7
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?

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Tomescu
Tomescu 2011-12-21
Thanks for the reply! I reference image that contains 10 items. I have separate objects in small images (cut from the reference image). Code sequence must find an object that you selected (if the write code sequence "object 1" must make a circle around the "object 1" If it says "Objective 2" to make the circle around the "item 2" Can you help me please? Thanks reference image
http://www.uploadup.com/di-5Y01.jpg
Object
http://www.uploadup.com/di-FNMJ.jpg
Tomescu
Tomescu 2011-12-21
Thank you very much! It works. May I ask one more thing if you can help me. Should identify the object in a circle. Now we identify an ellipse. and not half as the reference object (ellipse is part of the object). Thank you again. http://imageshack.us/photo/my-images/825/obiect10inpoza.png/ http://imageshack.us/photo/my-images/651/obiect10.jpg/
  1 个评论
Image Analyst
Image Analyst 2011-12-21
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.

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sneha
sneha 2012-4-18
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............
Francesco Violo
Francesco Violo 2015-7-28
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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