How to separate detected face region from face image?

Hi!

I use Viola's face detector - http://www.mathworks.com/matlabcentral/fileexchange/29437-viola-jones-object-detection

to detect face region. it is nicely giving detected face region. but i need to separate that detected region. is there any way to separate that square which include face region.

Thanks.

Answer 1

[Sumit Tandon]

I am assuming that you are using the STEP method of VISION.CASCADEOBJECTDETECTOR that returns a bounding box.

You could just use the bounding box data to crop out the face from the image.

For example, if I is the RGB image and bounding box is [x,y,w,h], you could do:

    croppedFace = I(x:x+w, y-h:y,:);

[Jaanu]

Actually I used this following link detector where i am confusing how to relate this bounding box [x,y,w,h].

http://www.mathworks.com/matlabcentral/fileexchange/29437-viola-jones-object-detection