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sketch recognition

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stephanie borg
stephanie borg on 6 Apr 2011
I AM USING THIS PROGRAM FOR SKETCH RECOGNITION HOWEVER IT IS GIVING ME THE ERROR ??? Subscripted assignment dimension mismatch.
Error in ==> sym_rec_main2 at 60 I3Dtotal(:,:,2) = Ibw3D2;
WHAT AM I DOING WRONG?
I3D1 = imread('IMG_0001.jpg');
I3D2 = imread('IMG_0002.jpg');
I3D3 = imread('IMG_0003.jpg');
I3D4 = imread('IMG_0004.jpg');
size3Dr = input('Enter number of training sets');
size3Dc = input('Enter number of different symbols');
sizer = size3Dr; %Assuming equal traning sets
sizec = size3Dc;
noimages = sizer/6;
Igray1 = rgb2gray(I3D1);
Ibw3D1 = im2bw(Igray1,graythresh(Igray1));
Igray2 = rgb2gray(I3D2);
Ibw3D2 = im2bw(Igray2,graythresh(Igray2));
Igray3 = rgb2gray(I3D3);
Ibw3D3 = im2bw(Igray3,graythresh(Igray3));
Igray4 = rgb2gray(I3D4);
Ibw3D4 = im2bw(Igray3,graythresh(Igray4));
I3Dtotal(:,:,1) = Ibw3D1;
I3Dtotal(:,:,2) = Ibw3D2;
I3Dtotal(:,:,3) = Ibw3D3;
I4Dtotal(:,:,3) = Ibw3D4;
rfactor = 1; crpval = 0;
for i = 1 : noimages
I = I3Dtotal(:,:,i);
img = sym_rec_img_preprocess(I, size3Dr, size3Dc, noimages);
for cnt = 1:((size3Dr*size3Dc)/noimages)
bw2 = img_crop(img{cnt}, rfactor, crpval);
charvec = img_resize(not(bw2));
out3D(:,cnt,i) = charvec;
end
end

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Answers (2)

Walter Roberson
Walter Roberson on 6 Apr 2011
Use size() to check that all of the I3D* image arrays are the same size.

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stephanie borg
stephanie borg on 6 Apr 2011
CAN I PLEASE TALK TO YOU ON YOUR PERSONAL EMAIL? THANKS
Walter Roberson
Walter Roberson on 6 Apr 2011
It is 07:00 here and I am going to bed in a moment. It is better to post your questions as others may be able to answer them. Especially if they are questions about the sketch recognition portion, as I am not familiar with the techniques used for sketch recognition.
stephanie borg
stephanie borg on 6 Apr 2011
ok i understand. because this program is supposed to work. im afraid i have something wrong in the sketches but i dont know.

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Tim Zaman
Tim Zaman on 6 Apr 2011
The images you are using in this code have to be the exact amount of pixels: so if image 1 is 800x600, image 2 has to be 800x600 too. Common error with image processing.

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stephanie borg
stephanie borg on 6 Apr 2011
you're right! they're not the same.. do you know from where i can change that? thanks
Walter Roberson
Walter Roberson on 6 Apr 2011
You could use the imresize() suggestion I made earlier. You will have to decide whether you want to size the small images up, or the larger images down.

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