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Why i'm getting imcrop error

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Ankit Singh
Ankit Singh on 7 May 2016
Commented: Ankit Singh on 7 May 2016
NotYet = false;
C = webcamlist;
cam=webcam(C{3});
preview(cam);
while ~NotYet
tic;pause(0.10);toc;
I = snapshot(cam);
faceDetect = vision.CascadeObjectDetector();
bbox=step(faceDetect,I);
if ~isempty(bbox)
NotYet = true;
break;
end
end
closepreview;
clear('cam');
face = imcrop(I,bbox);
imwrite(face, 'face.png');
how to avoid these error while presenting to external
Error in imshow (line 222)
images.internal.imageDisplayParseInputs({'Parent','Border','Reduce'},preparsed_varargin{:});
Error in imcrop>parseInputs (line 252)
imshow(a,cm);
Error in imcrop (line 93)
[x,y,a,cm,spatial_rect,h_image,placement_cancelled] =
parseInputs(varargin{:});
Error in DetectFaceandEyes (line 19)
face = imcrop(I,bbox);
  4 Comments
Image Analyst
Image Analyst on 7 May 2016
What is:
bbox
size(I)
Don't use semicolons. Tell us what that shows in the command window. Oh, and read this.
Ankit Singh
Ankit Singh on 7 May 2016
bbox =
564 165 265 265
ans =
720 1280 3
sometimes it works and sometimes doesn't
software shows warning or error without semicolons

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