tree 289331d5e0a2ca3c4a27b1ccb1e28a5f98ca93b2
parent 9883fc396b2913fbc597afa795c39d365229c299
author Sameer Agarwal <sameeragarwal@google.com> 1354345886 -0800
committer Sameer Agarwal <sameeragarwal@google.com> 1354345886 -0800

Speedup corrector.cc

Add a specialization for the common case where the residual block
outputs exactly one residual.

The matrix routines used by Corrector can be then specialized to
a scalar and be made considerably faster.

For denoising upto 400% speedup is observed.

Change-Id: I8e3f24b8ba41caa8e62ad97c5f5e96ab6ea47150