Richard Szeliski
CSE 576 (Spring 2005): Computer Vision
1
Image feathering
Weight each image proportional to its distance from the edge
 (distance map [Danielsson, CVGIP 1980]
1. Generate weight map for each image
2. Sum up all of the weights and divide by sum:
weights sum up to 1:  wi’ = wi / ( ∑i wi)