DIP Lecture 22: Image blending

Описание: ECSE-4540 Intro to Digital Image Processing
Rich Radke, Rensselaer Polytechnic Institute
Lecture 22: Image blending (4/30/15)

0:00:04 Image blending problem statement
0:02:05 Classical matte paintings
0:04:11 Hard-edged compositing
0:07:46 Blurring the seam with weighted transition regions
0:11:24 Multiresolution blending with image pyramids
0:13:29 Gaussian pyramids
0:16:01 Laplacian pyramids
0:21:03 Recovering the original image from the Laplacian pyramid
0:22:56 Image compositing with pyramids
0:27:07 Example
0:28:44 Poisson image editing
0:30:08 Why not use multiresolution blending?
0:32:31 The gradient-based problem
0:35:26 Solution to the problem: the Poisson equation
0:37:23 The discretized linear system
0:46:41 Matlab examples of Poisson compositing
0:55:43 Improvements using mixed gradients
1:01:31 Extensions and refinements

Follows Sections 3.1-3.2 of the textbook, http://cvfxbook.com/

Key references:

P. J. Burt and E. H. Adelson. A multiresolution spline with application to image mosaics. ACM Transactions on Graphics, 2(4):217--36, Oct. 1983.
http://dx.doi.org/10.1145/245.247

P. Pérez, M. Gangnet, and A. Blake. Poisson image editing. In ACM SIGGRAPH (ACM Transactions on Graphics), 2003.
http://dx.doi.org/10.1145/1201775.882269