Uses A wrapper library for Boykov and Kolmogorov max-flow/min-cut ... (c) 2008 Michael Rubinstein, WDI R&D and IDC
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Ref : http://www.cc.gatech.edu/cpl/projects/graphcuttextures/
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1. Run the image_synthesis.m with the follwing arguments
	first argument - your first image - image 1
	second argument - image on which the first needs to be overlaid - image 2
2.User interaction
	A)User has to choose the offset of the image 1 with respect to image 2. The image 2 will be displayed and user is asked to select the position where he/she wants to place the top left corner of the image 1, on image 2.
 	B)Pixels in the image 2 which is not covered after placing the image 1 are taken as the ones that should compulsorily come from image 2. 
	C)Now the image 1 is displayed to the user and he is asked to choose rectangular area, which he wants to compulsorily belong to image 1 in the final output image.
	D)See this 1 minute video for  better understanding of the process http://www.youtube.com/watch?v=qiGggrQpgD4( turn on annotations)
3. there are three outputs .
	alignment image- image showing alignment of image 1 over image 2 and constraints set by the user
	label image - labels for each pixel after graph cut
	output image - final synthesized image