Plot rectangle boxes on image using MATLAB

Here I am developed some code for plotting boxes on image but I am getting boxes on different image. All the boxes should be in same image. Please help me in this. Thank in advance.

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 video = VideoReader('parking video1.mp4');
 I = read(video,1);
 J = read(video,200);
a=104; b=73;
 c=104; d=515;
 count=0;count1=0;count2=0;
 total=10;

 for i=1:5 
 im1=imcrop(I,[a,b,283, 448]);

im3=imcrop(J, [a,b,283, 448]); 

 Background1 =abs(im1 - im3);

 grayImage1 = rgb2gray(Background1);
 % Convert to gray level

 thresholdLevel1 = graythresh(grayImage1);
    % Get threshold.

 binaryImage1 = im2bw( grayImage1, thresholdLevel1);
   % Do the binarization

binaryImage1 = bwareaopen(binaryImage1,1000);

 ak=bwarea(binaryImage1);

 figure, imshow(J);
 hold on;  

   if ak>0

     rectangle('Position',[a,b,283, 448],'Edgecolor', 'r');
   else

     rectangle('Position',[a,b,283, 448],'Edgecolor', 'g');

   end
 a=a+280;  
 end

[KSSV]

you want to plot boxes on a given jpg/png image?

[akhil sambar]

yes

Answer 1

[Nut]

Hi,

what if you substitute the line:

figure, imshow(J);

with these lines?

if i == 1

figure, imshow(J);

end

Is it a proper working for you?

[akhil sambar]

yeah, its working. Thank you RoBo :)

[Nut]

Of nothing.

However, I forgot to tell you in the previous answer, but... a more elegant solution should be to move the lines:

 figure, imshow(J);
 hold on;

before the "for" cycle. It should be also more efficient, I think.

Goodbye