Gradient-___domain image processing: Difference between revisions

Revision as of 15:59, 8 August 2014

Revision as of 16:02, 8 August 2014

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== Basics ==

Processing images in the gradient ___domain is a two-step process. The first step is to choose an image gradient. This is often extracted from one or more images and then modified, but it can be obtained through other means as well. For example, some researchers have explored the advantages of users painting directly in the gradient- ___domain.<ref>McCann, James, and Nancy S. Pollard. "Real-time gradient-___domain painting." ACM Transactions on Graphics (TOG). Vol. 27. No. 3. ACM, 2008.</ref> The second step is to solve Poisson's equation to find a new image that can produce the gradient from the first step. An exact solution often does not exist, so an image is found that approximates the desired gradient as closely as possible.

== Image Processing ==