Search found 50 matches

by konstantin
2014-12-14T10:27:08-07:00
Forum: Users
Topic: Image compressibility metric?
Replies: 8
Views: 6518

Image compressibility metric?

How can I get a measurement / metric of the compressibility of an image? I think it is related to the details, texture, and maybe number of colours on an image.
by konstantin
2014-10-25T15:27:16-07:00
Forum: Users
Topic: Is it possible to reproduce Ylevels filter with ImageMagick?
Replies: 14
Views: 7424

Re: Is it possible to reproduce Ylevels filter with ImageMag

Do you mean that standard deviation which is listed by the command "identify -verbose"? Format: JPEG (Joint Photographic Experts Group JFIF format) Mime type: image/jpeg Class: DirectClass Geometry: 390x527+0+0 Resolution: 96x96 Print size: 4.0625x5.48958 Units: PixelsPerInch Type: TrueColor Endiane...
by konstantin
2014-10-22T00:18:48-07:00
Forum: Users
Topic: Resizing became very slow after last upgrade
Replies: 8
Views: 5462

Re: Resizing became very slow after last upgrade

Thx, it works now flawlessly and quick. I had to use a few other options to ./configure, because I doesn't have X installed on my VPS. (--with-freetype=yes, --without-x)
by konstantin
2014-10-21T21:54:39-07:00
Forum: Users
Topic: Resizing became very slow after last upgrade
Replies: 8
Views: 5462

Re: Resizing became very slow after last upgrade

try compiling without OpenMP and without HDRI and see if that helps. I have heard that onn some Unix systems OpenMP can cause a slowdown. Are you sure that your input image has no profiles? What do you get from identify -verbose on your input file? Are you running an old version of libjpeg? Quality...
by konstantin
2014-10-21T21:52:24-07:00
Forum: Users
Topic: Resizing became very slow after last upgrade
Replies: 8
Views: 5462

Re: Resizing became very slow after last upgrade

If I compile from source with option:

Code: Select all

./configure --disable-openmp
Resizing works quick again. However command "montage" refuse to work.
by konstantin
2014-10-21T20:33:34-07:00
Forum: Users
Topic: Resizing became very slow after last upgrade
Replies: 8
Views: 5462

Re: Resizing became very slow after last upgrade

convert -version Version: ImageMagick 6.8.9-8 Q16 i686 2014-10-09 http://www.imagemagick.org Copyright: Copyright (C) 1999-2014 ImageMagick Studio LLC Features: DPC HDRI Modules OpenCL OpenMP Delegates: bzlib cairo fontconfig freetype gslib jng jp2 jpeg lcms lqr ltdl lzma pangocairo png ps rsvg tif...
by konstantin
2014-10-21T20:26:24-07:00
Forum: Users
Topic: Resizing became very slow after last upgrade
Replies: 8
Views: 5462

Re: Resizing became very slow after last upgrade

On my VPS:

Code: Select all

time convert logo: -resize 266x192 tmp.jpg
real 0m15.258s
user 0m14.197s
sys 0m0.893s

On my home machine:

Code: Select all

 time convert logo: -resize 266x192 tmp.jpg
real 0m45.332s
user 0m47.323s
sys 0m2.580s
by konstantin
2014-10-21T19:44:09-07:00
Forum: Users
Topic: Resizing became very slow after last upgrade
Replies: 8
Views: 5462

Resizing became very slow after last upgrade

I am using Arch Linux, and after the last upgrade the resizing with mogrify / convert became extremly slow: more than 10 seconds/image (720x540=>266x192). Before it was quick enough, a few seconds per / 70 images. What can I do to make it work faster again?
by konstantin
2014-09-20T19:43:07-07:00
Forum: Users
Topic: Is it possible to reproduce Ylevels filter with ImageMagick?
Replies: 14
Views: 7424

Re: Is it possible to reproduce Ylevels filter with ImageMag

Btw, is there any way to automatically guess the right gamma value for an image?
by konstantin
2014-09-16T22:06:45-07:00
Forum: Users
Topic: Is it possible to reproduce Ylevels filter with ImageMagick?
Replies: 14
Views: 7424

Re: Is it possible to reproduce Ylevels filter with ImageMag

Oh, I see. There is no graphical control window for this filter called Ylevels. It can be used only with function arguments. I have tried the first command you mentioned, this is the result: http://i.imgur.com/765LzVR.jpg Top image was generated with avisynth, bottom with ImageMagick. They reasonabl...
by konstantin
2014-09-16T20:21:37-07:00
Forum: Users
Topic: Is it possible to reproduce Ylevels filter with ImageMagick?
Replies: 14
Views: 7424

Re: Is it possible to reproduce Ylevels filter with ImageMag

Sorry, what does exactly mean: "control for it" and "screen snap"? Could you be more specific and verbose? (I am not a native english speaker), My avisynth file (yl.avs) looked like this when I generated the above image (one have to install MaskTools.dll and ylevels.avsi to the avisynth plugin direc...
by konstantin
2014-09-16T16:35:52-07:00
Forum: Users
Topic: Is it possible to reproduce Ylevels filter with ImageMagick?
Replies: 14
Views: 7424

Re: Is it possible to reproduce Ylevels filter with ImageMag

Here you can see Ylevels filter in action:
Full resolution image: http://i.imgur.com/etjLWz7.jpg

Image
by konstantin
2014-09-16T13:54:06-07:00
Forum: Users
Topic: Is it possible to reproduce Ylevels filter with ImageMagick?
Replies: 14
Views: 7424

Re: Is it possible to reproduce Ylevels filter with ImageMag

I don't understand exactly as well how it works, but the visual appearance of the videos are very nice with this Ylevels filter applied.
by konstantin
2014-09-15T23:21:00-07:00
Forum: Users
Topic: Is it possible to reproduce Ylevels filter with ImageMagick?
Replies: 14
Views: 7424

Is it possible to reproduce Ylevels filter with ImageMagick?

Is it possible to reproduce avisynth's Ylevels filter with ImageMagick?
http://avisynth.nl/index.php/Ylevels
http://forum.doom9.org/showthread.php?t=79898

To make dark video screenshots brighter and visible.
by konstantin
2014-09-10T20:08:58-07:00
Forum: Users
Topic: Is it possible to render text without X11 installed?
Replies: 1
Views: 2039

Is it possible to render text without X11 installed?

I have a headless VPS with Arch Linux. I try to render text on to some images with command mogrify and option "label": mogrify -path ./splice -verbose -filter Lanczos -resize 320x240 -fill blue -font /usr/share/fonts/TTF/FreeMono.ttf label:text -splice 1x1 -format bmp image.jpg , but all I get are e...