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davidcoleman

stereo matching

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What is the best algorithm for stereo matching and creating disparity maps? What is "ground truth".. according to some pages it is an algorithm, and for other it is a scanned scene with laser 3d scanner to show how the perfect match would look like? Do you know some finished examples (rather exe than source code), I am at this moment more interested in playing with it than trying to invent something that much better programmers with more time and budget already made.

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Quote:
What is the best algorithm for stereo matching and creating disparity maps?

See http://vision.middlebury.edu/stereo/eval/

Quote:
What is "ground truth".. according to some pages it is an algorithm, and for other it is a scanned scene with laser 3d scanner to show how the perfect match would look like?

Ground truth usually refers to the actual 'facts on the ground', not just some measurement of it (typically from air- or spaceborne sensors). In the absence of laboratory conditions, you can use a laser scanner to get quite precise and accurate measurements of the scene. Using an expensive algorithm (graph cuts) to optimize an energy functional governing the disparity map (via smoothness and disparity penalty terms) can also be used to evaluate the performance of simpler algorithms, but doesn't strictly count as ground truth.

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