** Next:** Results
** Up:** Plane-wave misfit
** Previous:** Plane-wave estimation

The residual of the least-squares estimation (12)

indicates
how well the seismic volume is approximated by a plane wave.
The computation does not explicitly involve the plane-wave waveform *f*(*s*),
but is
the cross-product of the the local gradient and the
patch's best-fitting plane-wave gradient .For a three-dimensional input volume,
the residual of the cross-product operator expression
yields a three-dimensional vector at each output location
of the three-dimensional image volume.

** Next:** Results
** Up:** Plane-wave misfit
** Previous:** Plane-wave estimation
Stanford Exploration Project

3/8/1999