How to make annotation circle.? Current code appear in a box.

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DetectFace = vision.CascadeObjectDetector();
BBOX = step(DetectFace, A);
B = insertObjectAnnotation(A, 'rectangle', BBOX, 'Face'); imshow(B), title('Detected faces');

Accepted Answer

Matthew Eicholtz
Matthew Eicholtz on 6 Apr 2016
The function call is RGB = insertObjectAnnotation(I,shape,position,label).
Change shape from 'rectangle' to 'circle', and change position from a bounding box [x,y,w,h] to a circle vector [x,y,r], where (x,y) are the coordinates of the circle center, and r is the radius.
All of this information can be found in the help documentation:

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