How to crop image in oval shape or facemask shape in android?

How to crop image in oval shape or facemask shape in android?

References

Reference NO 1

http://stackoverflow.com/questions/15200214/how-to-crop-image-in-oval-shape-or-facemask-shape-in-android

Reference NO 2

http://stackoverflow.com/questions/8951513/croping-image-in-ovalshape-in-android

Reference NO 3

http://androiddev.orkitra.com/?p=27654

Reference NO 4

http://it-tech-article.blogspot.com/2013/03/android-questions-intermettent-ssl.html

Reference NO 5

http://www2.sunysuffolk.edu/kiralyc/nur248/Labor%20&%20Delivery%206%20lecture%20student%20version%20final.ppt

Reference NO 6

http://www.thestreet.com/

Reference NO 7

http://www.helium.com/items/1475450-hairstyles-why-face-shape-and-hair-texture-matter

Reference NO 8

http://www.liketopost.com/fashion/13-head-turning-bob-hairstyles-with-bangs/