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Warping: a two step process

Warping is nothing more than resampling of an image in a stretched coordinate system. I split the warping operation into two stages: firstly, the determination of the new coordinate system, and secondly, the spatial and/or temporal resampling.

The second step, the resampling, is just an interpolation operation. It is no more complex than applying normal moveout (NMO), for example. However, as with other resampling operators, the choice of interpolation (nearest-neighbour, linear, band-limited etc.) may affect the quality of results.

The more challenging problem is how do we determine the new coordinate system? Or equivalently, how do we determine the warp function itself?

next up previous print clean
Next: Calculation of the warp Up: Introduction Previous: Introduction
Stanford Exploration Project
4/27/2000