271d8656e9
use round() rather than rint() where appropriate
...
rint() rounds to nearest even, rather than nearest ... in some cases,
like geometry transforms, we want strict nearest
2016-08-20 12:59:41 +01:00
1f403a4add
first attempt
...
seems to all work, test it a bit more
see https://github.com/jcupitt/libvips/issues/491
2016-08-15 15:45:26 +01:00
b6768a7e0f
small speedup for reduceh
2016-08-01 12:04:15 +01:00
f3326c8126
better vips_resize() for cubic/linear/nearest
...
vips_resize() used to do most of a downsize with vips_shrink() and the
final 200 - 300% with vips_reduce(). This was correct for lanczos2/3,
but not right for linear/cubic, which need more shrink and less
reduce to avoid aliasing.
This patch makes vips_resize() leave the final 100 - 200% to
vips_reduce() for linear/cubic, and leave everything to reduce for
nearest.
2016-06-16 09:46:02 +01:00
65b9ced6e9
improve arg order
...
more consistent
2016-04-11 13:23:25 +01:00
269cbb8641
better mask sizing for lanczos
2016-04-11 13:19:00 +01:00
3c98ba78a0
small experiment
2016-03-22 14:19:32 +00:00
e8b5cb6c23
add VIPS_COUNT_PIXELS, overcomputation tracking
...
added VIPS_COUNT_PIXELS(), use like this:
static int vips_shrinkh_gen( VipsRegion *or, ... )
{
VIPS_COUNT_PIXELS( or, "vips_shrinkh_gen" );
}
and on image close, if more than 100% of the pixels have been
calculated, you get a warning
only if you enable debugging, since this hurts perf slightly
2016-03-22 12:26:45 +00:00
c2035eb0f0
similarity uses reduce more often
2016-03-21 14:18:01 +00:00
05156edd15
add orc path for reducev
...
works, but still not quite right, see some banding
2016-03-18 17:41:51 +00:00
c20eb9dca0
remove old unrolled case for reduce
...
not used any more
2016-03-15 17:34:31 +00:00
46a18118c6
works!
2016-03-15 16:46:18 +00:00
ff88087a28
try making the reduce mask larger with residual
2016-03-15 14:59:59 +00:00
fba2ac2f85
fix sizing issues with new reduce code
...
a couple of bugs and some changed conventions
2016-03-13 17:44:24 +00:00
dc7902b12f
Merge branch 'master' into add-lanczos3
2016-03-13 11:23:03 +00:00
013102de01
finish hl3 version
...
vl3 nest
2016-03-10 08:43:50 +00:00
dcd921d7bf
silly travis
2016-03-09 13:06:03 +00:00
e9728e389b
first commit
2016-03-09 12:56:30 +00:00
8cffd136e9
finish reduce
...
and fix up bicubic a bit, it works better on int32 images now
2016-02-07 17:41:39 +00:00
fbe010b80a
in-line reduceh as well
2016-01-29 15:01:54 +00:00
John Cupitt