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nohalo with one less multiply per channel

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This commit is contained in:
Nicolas Robidoux 2010-05-20 15:56:32 +00:00
parent f026cbb125
commit 6031d690af
1 changed files with 6 additions and 3 deletions
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7
libvips/resample/nohalo.cpp
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@ -608,9 +608,12 @@ nohalo_subdivision (const double uno_two,
const double val_uno_one_1 = const double val_uno_one_1 =
.25 * ( dos_two + dos_thr + tre_two + tre_thr ) .25 * ( dos_two + dos_thr + tre_two + tre_thr )
+ +
.125 * ( dos_two_x - dos_thr_x + tre_two_x - tre_thr_x ) .125
*
( dos_two_x - dos_thr_x + tre_two_x - tre_thr_x
+ +
.125 * ( dos_two_y + dos_thr_y - tre_two_y - tre_thr_y ); dos_two_y + dos_thr_y - tre_two_y - tre_thr_y
);
/* /*
* Return the sixteen LBB stencil values: * Return the sixteen LBB stencil values: