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Author SHA1 Message Date
John Cupitt
407291c3ff try a simpler edge detect in canny 
simple +/- differencing seems to work better
 2018-02-08 17:14:26 +00:00
John Cupitt
43cbd32955 try interpolating theta 2018-02-05 09:22:58 +00:00
John Cupitt
ce6d37189c non-interpolatory edge thinning works 
woo
 2018-02-03 17:34:49 +00:00
John Cupitt
6944f78452 add edge thinning to canny 2018-02-03 10:14:09 +00:00
John Cupitt
a93e8dd079 start adding canny 
just adding edge thinning

see https://en.wikipedia.org/wiki/Canny_edge_detector
 2018-02-02 17:00:23 +00:00
John Cupitt
ce1f236c4d another 2x faster on hough_line 2018-02-02 09:12:31 +00:00
John Cupitt
59afb52f7c hough_circle 20% speedup 2018-02-02 07:39:10 +00:00
John Cupitt
78db92e60e better hough_line 
2x faster, better parameter space, but breaks compat :( sorry
 2018-02-01 20:41:14 +00:00
John Cupitt
f56fbf564f oops 2018-02-01 16:28:41 +00:00
John Cupitt
5a4b4e196d allow remove thumbnail from exif 
if the user has removed (or set to NULL) the "jpeg-thumbnail-data" tag,
remove it from the image EXIF on save

see https://github.com/jcupitt/ruby-vips/issues/147
 2018-02-01 16:15:02 +00:00
John Cupitt
749f4a902a Merge branch '8.6' 2018-01-31 20:47:01 +00:00
John Cupitt
e8958cb8ae improve changelog 2018-01-31 20:45:14 +00:00
John Cupitt
01eed391ab add sync locks to vips_sink() 
vips_sink() used to just fire off threads willy nilly -- this could
cause problems with sequential images if a worker fell too far behind
the pack

copy over the area locking mechanism from vips_sink_memory(): new
threads are now stalled if an old thread has not finished
 2018-01-31 16:25:06 +00:00
John Cupitt
19f7da9de2 Merge branch 'master' of github.com:jcupitt/libvips 2018-01-31 10:07:26 +00:00
John Cupitt
421f659d33 allow 1 mode in composite 
reused for all joins

see https://github.com/jcupitt/pyvips/issues/30
 2018-01-30 10:12:03 +00:00
John Cupitt
5fd2ecf81d remove limit on n image in composite 
composite was limited to a max of 64 images ... remove the limit

see https://github.com/jcupitt/pyvips/issues/30
 2018-01-30 09:48:34 +00:00
John Cupitt
43e2f2bf9a Merge branch 'master' of github.com:jcupitt/libvips 2018-01-27 11:43:31 +00:00
John Cupitt
e0fd75266c update opens-files chapter 2018-01-27 11:43:03 +00:00
John Cupitt
c8afbb92e2 update doc 2018-01-26 15:34:52 +00:00
John Cupitt
97a4ed2ca9 fix a c++ warning 
see https://github.com/jcupitt/libvips/pull/864
 2018-01-26 07:56:43 +00:00
John Cupitt
2cd606bdb2
Merge pull request #864 from lovell/missing-sentinel-composite 
composite.cpp: silence 'missing sentinel' warnings in GCC v6+
 2018-01-26 07:37:17 +00:00
Lovell Fuller
89d8fb3380 Silence 'missing sentinel' warnings in GCC v6+ 2018-01-25 23:18:28 +00:00
John Cupitt
799b1e4910 fix --without-magick 
it didn't interact well with the new magickload/magicksave flags, thanks
Alex

see https://github.com/jcupitt/libvips/issues/862
 2018-01-24 09:28:02 +00:00
John Cupitt
67bacdb118 add note on cmyk profiles 
to the vipsthumbnail docs, see

https://github.com/jcupitt/libvips/issues/861
 2018-01-23 13:09:51 +00:00
John Cupitt
39406877a2 Merge branch '8.6' 2018-01-12 17:23:24 +00:00
John Cupitt
94daa18884 fix read of plane-separate, large-strip tiff 
TIFFReadScanline() is too fiddly to use on plane-separate, large-strip
images ... ban it!

see https://github.com/jcupitt/libvips/issues/855
 2018-01-12 17:04:47 +00:00
John Cupitt
18f530c724 Merge branch '8.6' 2018-01-12 12:02:41 +00:00
John Cupitt
24c07cfde2 revert an accidental ABI break 
the new window manager code in 8.6.1 changed the prototype of an internal
function which was visible in the public API

this patch renames the function, adds it to an internal header instead,
and adds a stub for the old prototype

see https://github.com/jcupitt/libvips/issues/854
 2018-01-12 11:56:17 +00:00
John Cupitt
25ff103408 fix build without magicksave 
an ifdef was in the wrong place
 2018-01-12 11:28:34 +00:00
John Cupitt
f27b5a81f7 register magicksave for gif and bmp 2018-01-10 08:30:52 +00:00
John Cupitt
c9b87ce4f5 fix a thread leak in sink_screen 
we were not joining the bg render thread when it exited

instead, keep the thread around with a semaphore for it to wait on
 2018-01-08 11:47:47 +00:00
John Cupitt
3fde3cf4ba better thread leak reporting 2018-01-07 11:45:12 +00:00
John Cupitt
925667f8d3 Merge branch '8.6' 2018-01-05 16:29:56 +00:00
John Cupitt
1b89d62eb5 fix a race associated with sink_screen 
sink_screen was not keeping a ref to its input, so in rare conditions
it could try to make a region on a dead image
 2018-01-05 16:27:44 +00:00
John Cupitt
3dfd6b8643 missed another vips-8.5 reference 2018-01-03 10:39:44 +00:00
John Cupitt
68e0067840 note rgb->g improvement 2018-01-03 08:34:15 +00:00
John Cupitt
917d61e785
Merge pull request #842 from lovell/perf-scRGB2BW 
Perf: ~15% improvement in conversion to greyscale
 2018-01-03 08:27:40 +00:00
Lovell Fuller
768ab7fa8f Improve greyscale perf by using isinf/isnan after calc 2018-01-02 20:36:14 +00:00
John Cupitt
da7b62680d simpler profile handling for thumbnail 
use the fallback handling logic in vips_icc_*() instead of having our own
 2018-01-01 18:52:54 +00:00
John Cupitt
4c2434ab67 fix memleak in dzsave 
tree elements were not being freed, thanks lovell

see https://github.com/jcupitt/libvips/issues/837
 2018-01-01 11:40:04 +00:00
John Cupitt
6f2861df5b move META_SEQ support into foreign load 
simplifies loaders a bit
 2018-01-01 11:14:27 +00:00
John Cupitt
86e07236b9 Merge branch '8.6' 2017-12-31 13:52:08 +00:00
John Cupitt
faeb68e993 improve seq fix 
simpler logic, more reliable unset
 2017-12-31 13:51:29 +00:00
John Cupitt
39ab05469f Merge branch '8.6' 2017-12-31 12:57:57 +00:00
John Cupitt
9febc3ac3e seq could be set on small random images 
images under the disc threshold opened in random access mode from
sequential loaders would have the seq tag set on them, causing
performance problems with vips_resize()

see https://github.com/jcupitt/libvips/issues/840
 2017-12-31 12:56:11 +00:00
John Cupitt
a128149009 Merge branch '8.6' 2017-12-31 10:39:36 +00:00
John Cupitt
83e36880da more compat for older IPCT code 
add IPTC data under the name "ipct-data" as well
 2017-12-31 10:38:35 +00:00
John Cupitt
77287a938f fix misspelling of IPTC as IPCT 
the letters have been accidentally swapped for years

add a compat macro so older code still works
 2017-12-31 10:23:27 +00:00
John Cupitt
1b3329acc4 add C API wrappers for magicksave 2017-12-23 17:27:26 +00:00
John Cupitt
8d08255ff7 rename HAVE_MAGICK as HAVE_MAGICK6 
clearer meaning
 2017-12-23 17:13:44 +00:00