shape recognition(many shape)

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

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)

[Trieu Nguyen Ta]

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,

[Lee]

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

[kidare]

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

[phuc minh]

>> i1=imread('E:\ELECTRONICS SOFTWARE\matlab\mau\tamgiac.png');
>> i2=imread('E:\ELECTRONICS SOFTWARE\matlab\mau\tugiac.png');
>> i3=imread('E:\ELECTRONICS SOFTWARE\matlab\mau\tron.png');
>> 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.
cuold you help me, please?
what is this error ?

[abhi m]

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....

rgbImage = imread('test.jpg');
[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

[abhi]

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 );

[Luz]

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