I get this error "index exceeds matrix dimensions" How can I solve it?

I have this code and I apply it in image and it was work. Now I'm trying to use it in Live video

Code:

vid = videoinput('winvideo',1, 'MJPG_640x360');
set(vid,'FramesPerTrigger',4);
set(vid,'TriggerRepeat',Inf);
start(vid);

BackgroundImage = getsnapshot(vid);
I1 = rgb2gray(BackgroundImage);
figure;
subplot(2,2,1); imshow(I1); title('background'); pause(2); 
while 1
frames = getdata(vid);
I3 =  frames(:,:,[1 1 1]);
I2  = rgb2gray(I3);
subplot(2,2,2); imshow(I2); title('frames gray');

Objects = I1 ~= I2; pause(2);
BlobAnalysis = vision.BlobAnalysis('MinimumBlobArea',500,'MaximumBlobArea',230000);
[area,centroid,BoundingBox] = step(BlobAnalysis,Objects);
pause(1);
[row , col ] = size (BoundingBox);
for i=1 : row
x = BoundingBox(i,1);
y =BoundingBox(i,2);
w=BoundingBox(i,3);
h=BoundingBox(i,4);
TestImage = frames(y :(y+h),x:(x+w), :);
r = TestImage(:,:,1);
g = TestImage(:,:,2);
b = TestImage(:,:,3);

subplot(2,2,3); title('Histogram');
histogram2(r,g,'DisplayStyle','tile','ShowEmptyBins','on', ...
    'XBinLimits',[0 255],'YBinLimits',[0 255]);
histogram(r,'BinMethod','integers','FaceColor','r','EdgeAlpha',0,'FaceAlpha',1)
hold on
histogram(g,'BinMethod','integers','FaceColor','g','EdgeAlpha',0,'FaceAlpha',0.7)
histogram(b,'BinMethod','integers','FaceColor','b','EdgeAlpha',0,'FaceAlpha',0.7)
xlabel('RGB value')
ylabel('Frequency')
xlim([0 257])

thresholding = 2097150;
rth=graythresh(TestImage(:,:,1))*255
gth=graythresh(TestImage(:,:,2))*255
bth=graythresh(TestImage(:,:,3))*255

   if ( rth*gth*bth >= thresholding )
   % Ishape = insertShape(object,'rectangle',BoundingBox,'Color', 'green','Linewidth',6);
  msgbox('Alarm it is white !');
  load gong.mat;
   while ( rth*gth*bth >= thresholding)%endless loop
       sound(y);
       lastTime = clock;
       while etime(clock, lastTime) < 5
          pause(0.03);
       end 
    break;
   end
  else
      msgbox('ok');
  end
  clear TestImage;
  end
  end

error:

Index exceeds matrix dimensions.

Error in TryG (line 35)
TestImage = frames(y :(y+h),x:(x+w), :);

Answer 1

[Walter Roberson]

The line

TestImage = frames(y :(y+h),x:(x+w), :);

is incorrect. It should be

TestImage = frames(y :(y+h-1),x:(x+w-1), :);

[Han]

Thank you so much