ref: 28b1db92783bdb8919bcaefe174a715009c5e444
parent: 1d60b6bcb5f1d92c29a753def152106a76060689
author: Deb Mukherjee <debargha@google.com>
date: Mon Feb 11 12:08:52 EST 2013
Refactoring of switchable filter search for speed Refactors the switchable filter search in the rd loop to improve encode speed. Uses a piecewise approximation to a closed form expression to estimate rd cost for a Laplacian source with a given variance and quantization step-size. About 40% encode time reduction is achieved. Results (on a feb 12 baseline) show a slight drop: derf: -0.019% yt: +0.010% std-hd: -0.162% hd: -0.050% Change-Id: Ie861badf5bba1e3b1052e29a0ef1b7e256edbcd0