How do I use this program to read the number of counting boxes and do something?

like if # bounding box=1,

    do task 1

like if bounding box=2,

    do task 2

The program code I have used is:

clc;
clear all;
import java.awt.Robot;
import java.awt.event.*;
mouse = Robot;
mouse.mouseMove(0,0);
screenSize = get(0, 'screensize');
vid = videoinput('winvideo', 1,'YUY2_320X240');
set (vid, 'FramesPerTrigger',inf);
set (vid, 'ReturnedColorspace','rgb');
vid.FrameGrabInterval = 5;
start (vid);
while (vid.FramesAcquired <= 300)
    data = getsnapshot(vid);
    diff_imr = imsubtract (data(:,:,1), rgb2gray(data));
    diff_imb = imsubtract (data(:,:,3), rgb2gray(data));
    diff_imr = medfilt2(diff_imr, [3 3]);
    diff_imb = medfilt2(diff_imb, [3 3]);
    diff_imr = im2bw (diff_imr, 0.18);
    diff_imb = im2bw (diff_imb, 0.18);
    diff_imr = bwareaopen(diff_imr, 300);
    diff_imb = bwareaopen(diff_imb, 300);
    [bw , N] = bwlabel(diff_imr, 8);
    [bw1 , N] = bwlabel(diff_imb, 8);
    statsr = regionprops(bw , 'BoundingBox', 'Centroid');
    statsb = regionprops(bw1 , 'BoundingBox', 'Centroid');
    imshow (data)
    %PopUpMenu;
    hold on

      for object = 1:length(statsr)
          bb = statsr(object).BoundingBox;
          bc = statsr(object).Centroid;
          rectangle ('Position',bb,'Edgecolor','g','LineWidth',2);
          plot(bc(1),bc(2),'-m+');
          a = text(bc(1)+15 ,bc(2), strcat('X :',num2str(round(bc(1))),'     Y:',num2str(round(bc(2)))));
          set (a,'FontName','Arial','FontWeight','bold','FontSize',12,'Color','yellow');
          mouse.mouseMove(bc(1),bc(2));
          pause(0.00001);
          %mouse.mousePress/Release(InputEvent.BUTTON1_MASK);
      end
      for object = 1:length(statsb)
          bb1 = statsb(object).BoundingBox;
          bc1 = statsb(object).Centroid;
          rectangle ('Position',bb1,'Edgecolor','g','LineWidth',2);
          plot(bc1(1),bc1(2),'-m+');
          b = text(bc1(1)+15 ,bc1(2), strcat('X :',num2str(round(bc1(1))),'     Y:',num2str(round(bc1(2)))));
          set (b,'FontName','Arial','FontWeight','bold','FontSize',12,'Color','yellow');
          mouse.mousePress(InputEvent.BUTTON1_MASK);
          pause(0.00001);
          mouse.mouseRelease(InputEvent.BUTTON1_MASK);
      end
      hold off;
  end
  stop(vid);
  delete(vid)

Answer 1

[Image Analyst]

Don't use the same N for both images - they may be different. So have

    [bw , N] = bwlabel(diff_imr, 8);
    [bw1 , N1] = bwlabel(diff_imb, 8);

Now N and N1 are the number of bounding boxes. So you can just do

if N == 1
    % Do task 1
elseif N ==2 
    % Do task 2
elseif N == 3
    % Do something else.
end

Repeat for N1 if you need to.