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### Highlights from shape recognition(many shape)

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# shape recognition(many shape)

11 Jul 2008 (Updated )

with this you can recognize many shape;but only symetrical shape

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Description

with this you can recognize many shape;but only symetrical shape,for example you can improve this for recognize star,polygon if you want

Required Products Image Processing Toolbox
MATLAB release MATLAB 7.1.0 (R14SP3)
11 Oct 2012

its important.

11 Oct 2012

its important.

11 Oct 2012

its important.

29 Sep 2011

its a very good job.
although I have some questions . Please could you explain these khoangcach{k}(1,i) = sqrt ( ( b(i,2) - s(k).Centroid(1) )^2 + ( b(i,1) - s(k).Centroid(2) )^2 )

vuong = c/(4*b^2)
chunhat=c/(4*b*(a^2-b^2)^0.5);

thnks a lot

08 May 2010

Hi, can u plz tel wt is this khoangcach{k}(1,i) = sqrt ( ( b(i,2) - s(k).Centroid(1) )^2 + ( b(i,1) - s(k).Centroid(2) )^2 );

06 May 2010

I should recognise circle square rectangle but am struck... the code below is effecient in recognising circle but it is failing to recognise square and recatngle.. plz help me in improvising my code plz....

[rows columns numberOfColorBands] = size(rgbImage);
subplot(3, 2, 1);
imshow(rgbImage, []);
title('Original color Image');
set(gcf, 'Position', get(0,'Screensize')); % Maximize figure.

%STEP 2

%---------------------------------------------------Convert rgb image to grayscale-----------------------------------------

grayImage = rgb2gray(rgbImage);
subplot(3, 2, 2);
imshow(grayImage, []);
title('Converted to gray scale');

%STEP 3

%------------------------------------------------------Detection of edge by canny-------------------------------------------------------

cannyImage = edge(grayImage,'canny');
subplot(3, 2, 3);
imshow(cannyImage, []);
title('Canny Edge Image');

%STEP 4

%-------------------------------------------------------------dilation--------------------------------------------------------

windowSize = 5;
halfWidth = floor(windowSize/2);
dilatedImage = zeros(rows, columns);
for col = (halfWidth+1) : columns - halfWidth
x1 = col - halfWidth;
x2= col + halfWidth;
for row = (halfWidth+1) : rows - halfWidth
y1 = row - halfWidth;
y2 = row + halfWidth;
dilatedImage(row, col) = max(max(cannyImage(y1:y2, x1:x2)));
end
end

%Displaying the dilated image

subplot(3, 2, 4);
imshow(dilatedImage, []);
caption = sprintf('Dilated with a window size of %d',windowSize);
title(caption);

%STEP 5

%------------------------------------------------------------Erosion-------------------------------------------------

windowSize = 5;
halfWidth = floor(windowSize/2);
erodedImage = zeros(rows, columns);
for col = (halfWidth+1) : columns - halfWidth
x1 = col - halfWidth;
x2= col + halfWidth;
for row = (halfWidth+1) : rows - halfWidth
y1 = row - halfWidth;
y2 = row + halfWidth;
erodedImage(row, col) = min(min(dilatedImage(y1:y2, x1:x2)));
end
end

%Displaying eroded image

subplot(3, 2, 5);
imshow(erodedImage, []);
caption = sprintf('Eroded image with a window size of %d',windowSize);
title(caption);
[B,L] = bwboundaries(grayImage, 'noholes');

STATS = regionprops(L, 'all');

figure,
imshow(grayImage),
title('Results');
hold on
for i = 1 : length(STATS)
W(i) = uint8(abs(STATS(i).BoundingBox(3)-STATS(i).BoundingBox(4)) < 0.1);
W(i) = W(i) + 2 * uint8((STATS(i).Extent - 1) == 0 );
centroid = STATS(i).Centroid;
switch W(i)
case 1
plot(centroid(1),centroid(2),'wO');
title('circle');
case 2
plot(centroid(1),centroid(2),'wX');
title('rectangle');
case 3
plot(centroid(1),centroid(2),'wS');
title('square');
end
end
return

22 Nov 2009

>> im1=im2bw(i1);
>> im2=im2bw(i2);
>> im3=im2bw(i3);
>> p1=reshape(im1,1,176);
>> p2=reshape(im2,1,176);
>> p3=reshape(im3,1,176);
>> p=[p1 p2 p3];
>> t=[1 2 3];
>> %lay du lieu
net=newff(minmax(p),[176,20,7],{'logsig','logsig','purelin'},'traingd');
net.trainParam.epochs=10000;
net.trainParam.goal=0.00000001;
%[net,tr]=train(net,p,t);
[net,tr]=train(net,p,t)
??? Error using ==> minmax at 43
Argument has illegal type.
what is this error ?

08 Oct 2009

Bác có suorce code nhận dạng ảnh bằng mạng nơtron ko ạ?source này ko sử dụng mạng nơtron thì phải

01 Feb 2009

Hi, can you please explain all the vietnamese words in the programme? such as dolech, tamgiacdeu ,elip, thoi etc. Thank you very much.

13 Jul 2008

i'm so sorry becauce i upload file in vietnamese,but now if u don't understant anything u can contact with me,so i can explain it for u,