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Author SHA1 Message Date
John Cupitt
ff88087a28 try making the reduce mask larger with residual 2016-03-15 14:59:59 +00:00
John Cupitt
45c3fea6ac more resize tuning 2016-03-15 09:49:30 +00:00
John Cupitt
ac4e5ce059 return of shrink-less-affine-more 
though a bit less extreme
 2016-03-14 14:58:02 +00:00
John Cupitt
773b474116 Merge branch 'master' of github.com:jcupitt/libvips 2016-03-14 13:35:47 +00:00
John Cupitt
82cecf3d9f bilinear interp. supports complex types 
in line with cubic etc.
 2016-03-14 10:06:45 +00:00
John Cupitt
fba2ac2f85 fix sizing issues with new reduce code 
a couple of bugs and some changed conventions
 2016-03-13 17:44:24 +00:00
John Cupitt
f12fef4aa9 fix compile 2016-03-13 11:35:35 +00:00
John Cupitt
dc7902b12f Merge branch 'master' into add-lanczos3 2016-03-13 11:23:03 +00:00
John Cupitt
6368ab0649 add switches to disable rad, analyze and ppm 
vips has built-in support for rad, analyze and ppm ... add configure
switches to disable these readers

useful to reduce the attack surface in some applications
 2016-03-12 16:48:27 +00:00
John Cupitt
42224b6b0e Merge branch '8.2' 2016-03-12 15:12:56 +00:00
John Cupitt
abe4e70d02 make radload slightly more robust 
stops some valgrind warnings
 2016-03-12 15:10:52 +00:00
John Cupitt
70db9aa77b better rounding in resize 2016-03-12 13:14:34 +00:00
John Cupitt
493482c8a7 hey ho, line cache goes back too 2016-03-11 14:56:06 +00:00
John Cupitt
a832a0c254 notes 2016-03-11 14:42:12 +00:00
John Cupitt
4f41617d89 TODO notes 2016-03-11 13:47:19 +00:00
John Cupitt
08e8c27e38 moore vips_resize() tuning 
put back the mild post-shrink sharpen, a little more anti-alias

see https://github.com/jcupitt/libvips/issues/404#issuecomment-195297607
 2016-03-11 10:17:41 +00:00
John Cupitt
5d31d8e824 turn up anti-alias for small shrinks 
a little more anti-alias for small reductions

see https://github.com/jcupitt/libvips/issues/404#issuecomment-195276154
 2016-03-11 09:25:33 +00:00
John Cupitt
2ca7b29214 better gauss mat generation 2016-03-10 22:01:55 +00:00
John Cupitt
4974a1ed9c better rounding for vips_resize() 
we were getting off by one size errors
 2016-03-10 19:53:05 +00:00
John Cupitt
9209fb25c5 update notes 2016-03-10 17:40:19 +00:00
John Cupitt
d351e07a6b finish up 2016-03-10 17:33:34 +00:00
John Cupitt
e9bf936377 finish vl3 
but it's still not producing identical results to reducev, seems to be
offset by one?
 2016-03-10 12:16:21 +00:00
John Cupitt
4d10bd12f9 still trying to get reducevl3 to vectorise 2016-03-10 10:24:44 +00:00
John Cupitt
f58d941d99 Merge branch 'master' into add-lanczos3 2016-03-10 08:54:10 +00:00
John Cupitt
61d2aa6586 formatting 2016-03-10 08:53:54 +00:00
John Cupitt
013102de01 finish hl3 version 
vl3 nest
 2016-03-10 08:43:50 +00:00
John Cupitt
f9d7a8df48 Merge pull request #402 from lovell/defer-LabQ2sRGB-table-building 
Performance: only build LAB to sRGB look-up tables if needed
 2016-03-10 08:41:08 +00:00
John Cupitt
a26291a426 reducehl3 is done 
sort of anyway, tinkering with optimization
 2016-03-09 22:47:02 +00:00
Lovell Fuller
a40397c438 Build LAB to sRGB tables only when first needed 
Reduces libvips start-up time by ~20ms
 2016-03-09 19:20:57 +00:00
John Cupitt
dcd921d7bf silly travis 2016-03-09 13:06:03 +00:00
John Cupitt
e9728e389b first commit 2016-03-09 12:56:30 +00:00
John Cupitt
efa12029a6 add notes on new image format deps 2016-03-08 09:00:57 +00:00
John Cupitt
9201248623 Merge branch '8.2' 2016-03-06 18:05:12 +00:00
John Cupitt
acf5f5169a fix hist_entropy 
there was a copy-paste error in the call to vips_log(), thanks Lovell

see https://github.com/lovell/sharp/issues/295
 2016-03-06 18:02:59 +00:00
John Cupitt
2ea5c5f7e5 make python bandrank() work like bandjoin() 
we had a custom wrapper for bandjoin(), but bandrank(), a function with
an almost identical interface, did not ... this was confusing

bandrank() now has a custom wrapper too ... this breaks API
unfortunately, but hopefully very few people were using this thing and
it's better to make this change as soon as possible
 2016-03-01 12:12:51 +00:00
John Cupitt
25c3c49d1c better handling of cast+shift for non-int formats 
before, im.cast(uchar, shift = true) where im was float and tagged as
rgb16 would not shift the image, since it's unclear how much to shift a float
type by

now we do two casts: first, we guess the numeric range from the
interpretation, so rgb16 would be ushort, so we cast float->ushort;
second, we cast to the target type and do the shift on the way

see https://github.com/jcupitt/libvips/issues/397

thanks apacheark
 2016-03-01 11:31:54 +00:00
John Cupitt
ad7ddc4f24 more vips_resize() tuning 
now we have better tuning for the anti-alias blur, we can increase the
amount we shrink by and reduce the amount we affine by

this gives a noticable speedup
 2016-03-01 11:19:30 +00:00
John Cupitt
19a838470b add webp shrink-on-load 
and vipsthumbnail knows about it too

see https://github.com/jcupitt/libvips/issues/398
 2016-02-28 14:36:21 +00:00
John Cupitt
e582f13d13 tiny polish to hist_find 
slightly faster again
 2016-02-28 12:08:06 +00:00
John Cupitt
e46e2b7b28 Merge pull request #392 from lovell/hist-find-perf 
vips_hist_find: ~30% performance improvement for 1-4 band uchar
 2016-02-28 11:29:14 +00:00
John Cupitt
b197773095 oop, overflow in sharpen 
plus another tweak of the defaults
 2016-02-28 11:24:35 +00:00
John Cupitt
ee1874c5ca much better handling of arrayimage cli args 
we were not setting the access hint on arrayimage args, so

arrayjoin "$(echo *.jpg)" x.tif[bigtiff] --across 10

would open all the jpg images to memory, usually, in random mode

now arrayimage args see the operation's access hint (seq in this case),
for much better behaviour

also, we allow any whitespace as an arg separator in arrayimage from
string
 2016-02-27 20:37:20 +00:00
John Cupitt
35650c2244 reduce the number of copy() ops 
reduce the number of copy() ops issued during colour conversion
 2016-02-26 14:05:35 +00:00
John Cupitt
cc9517df20 make sharpen defaults better for screen work 
the defaults were oriented towards print output, make them more suitable
for screen work
 2016-02-26 14:04:54 +00:00
John Cupitt
609e639528 Merge branch '8.2' 2016-02-26 12:44:54 +00:00
John Cupitt
5a60dd26f9 fix parsing of filenames containing brackets 
oops, missed part of a regexp in parse_token, see:

https://github.com/jcupitt/libvips/issues/395

thanks shilpi230
 2016-02-26 12:41:48 +00:00
John Cupitt
c95bbe43b5 oops in sharpen 2016-02-26 12:26:12 +00:00
John Cupitt
d33306836f better rgb16 -> scrgb handling 
helps new sharpen tests
 2016-02-26 09:08:42 +00:00
John Cupitt
04cc13e321 notes 2016-02-25 11:47:53 +00:00
John Cupitt
c1f1a7c1b3 improve sharpen for screen work 
it was a bit granular (since it was designed for offset work), make sharpen
easier to adjust for smaller effects

- new 'sigma' parameter
- greater parameter range
- more self-tests
 2016-02-25 11:16:24 +00:00