emboss - create emboss of an image

Calling Sequence:

	img = emboss(im,n)
	
Parmeters:

	im: matrix of an input image
	n: select a manner for embossing
	img: output image matrix

Description:
	
	We provide eight methods for getting an embossed image,that is,southwest south southeast west east northwest north northeast.

Example:

	im = imread("lena.png");
	img = emboss(im,2);