Search found 56 matches
- 2012-09-26T03:54:25-07:00
- Forum: Digital Image Processing
- Topic: bamupsampler
- Replies: 14
- Views: 36641
bamupsampler
I think I might have a decent scheme for upsampling. Original http://puu.sh/18LYS Bilinear http://puu.sh/18LZQ convert floor.jpg +filter -resize 400% triangle2.png Bamupsampler http://puu.sh/18LYa convert floor.jpg -colorspace rgb +sigmoidal-contrast 8 -define filter:blur=1 -define filter:support=4 ...
- 2012-09-25T18:27:59-07:00
- Forum: Users
- Topic: ImageMagick 7 Windows builds?
- Replies: 15
- Views: 22275
Re: ImageMagick 7 Windows builds?
I'm just going to build for Cygwin, I've installed autoconf, make and gcc... we'll see what happens.
http://ompldr.org/vZm4yYw
What exactly is happening here?
http://ompldr.org/vZm4yYw
What exactly is happening here?
- 2012-09-25T14:22:58-07:00
- Forum: Digital Image Processing
- Topic: BAM Scaler
- Replies: 13
- Views: 34867
Re: BAM Scaler
The "standard" test I and others use with the fly is resizing to exactly 403x600. Then, you can compare to the million versions of this test I have in the Forums. This is not an integer ratio by any means. http://puu.sh/18Ceu convert fly.jpg -colorspace rgb +sigmoidal-contrast 8 -define f...
- 2012-09-25T13:49:49-07:00
- Forum: Users
- Topic: ImageMagick 7 Windows builds?
- Replies: 15
- Views: 22275
Re: ImageMagick 7 Windows builds?
Will Visual Studio Express 2012 work for compiling ImageMagick on Windows?fmw42 wrote:As far a I know there are no Windows archives of binaries and no precompiled HDRI versions of IM for any platform
- 2012-09-25T12:31:49-07:00
- Forum: Users
- Topic: ImageMagick 7 Windows builds?
- Replies: 15
- Views: 22275
ImageMagick 7 Windows builds?
Does anyone know where I can find builds of ImageMagick 7 for Windows? I've never built a program before and I would like to play with HDRI mode.
- 2012-09-25T09:48:01-07:00
- Forum: Digital Image Processing
- Topic: BAM Scaler
- Replies: 13
- Views: 34867
Re: BAM Scaler
http://www.imagemagick.org/discourse-server/viewtopic.php?f=1&t=20992&p=85021&hilit=wikipedia#p85021 bamscaler4 http://puu.sh/18xgj convert fly.jpg -colorspace rgb +sigmoidal-contrast 8 -define filter:blur=1 -define filter:support=2 -define filter:win-support=2 -define filter:kaiser-bet...
- 2012-09-25T07:55:39-07:00
- Forum: Digital Image Processing
- Topic: BAM Scaler
- Replies: 13
- Views: 34867
Re: BAM Scaler
@Bryant: The only high frequency components of your latest image are sharp interfaces between essentially flat colour areas, exactly the type of thing sigmoidization does well at. Because the only "drift" is along boundaries, of course you don't see colour drift. Perhaps this image has mo...
- 2012-09-24T17:05:08-07:00
- Forum: Digital Image Processing
- Topic: BAM Scaler
- Replies: 13
- Views: 34867
Re: BAM Scaler
@NicolasRobidoux Kaiser w/o Sigmoidal Contrast https://dl.dropbox.com/u/106615031/dsp/imagemagick/bamscaler/sourcefilmmaker/comparison3/downsample-bamsampler.png convert large.png -colorspace rgb -define filter:kaiser-beta=4 -define filter:window=kaiser -filter jinc -distort resize 1920 -colorspace ...
- 2012-09-24T11:30:48-07:00
- Forum: Digital Image Processing
- Topic: sigmoidized EWA quadratic B-spline windowed Jinc 3-lobe
- Replies: 19
- Views: 53289
Re: sigmoidized EWA quadratic B-spline windowed Jinc 3-lobe
@NicolasRobidoux
Could you perhaps test your filter on the original image I have uploaded in this post?
viewtopic.php?p=90497#p90497
Could you perhaps test your filter on the original image I have uploaded in this post?
viewtopic.php?p=90497#p90497
- 2012-09-24T04:27:44-07:00
- Forum: Digital Image Processing
- Topic: BAM Scaler
- Replies: 13
- Views: 34867
Re: BAM Scaler
Can we have one or two of the full sized originals for testing? I only have the original for the second image. https://dl.dropbox.com/u/106615031/dsp/imagemagick/bamscaler/sourcefilmmaker/comparison2/large-comp.png :) EDIT bamsampler2 https://dl.dropbox.com/u/106615031/dsp/imagemagick/bamscaler/sou...
- 2012-09-24T02:20:01-07:00
- Forum: Digital Image Processing
- Topic: BAM Scaler
- Replies: 13
- Views: 34867
Re: BAM Scaler
Aliased 1280x720 https://dl.dropbox.com/u/106615031/dsp/imagemagick/bamscaler/sourcefilmmaker/comparison2/original-comp.png Antialiased from 20480x11520 w/ BAM Scaler https://dl.dropbox.com/u/106615031/dsp/imagemagick/bamscaler/sourcefilmmaker/comparison2/downsampled.png convert large.png \( +clone...
- 2012-09-24T00:52:28-07:00
- Forum: Digital Image Processing
- Topic: BAM Scaler
- Replies: 13
- Views: 34867
Re: BAM Scaler
Okay I think I've finally decided on my settings. Aliased 1280x720 https://dl.dropbox.com/u/106615031/dsp/imagemagick/bamscaler/sourcefilmmaker/comparison/original.png Antialiased from 5120x2880 https://dl.dropbox.com/u/106615031/dsp/imagemagick/bamscaler/sourcefilmmaker/comparison/bamscaler.png Imp...
- 2012-09-23T13:52:02-07:00
- Forum: Digital Image Processing
- Topic: BAM Scaler
- Replies: 13
- Views: 34867
BAM Scaler
I think I'm getting closer to what I want to do with BAM Scaler. https://dl.dropbox.com/u/106615031/dsp/imagemagick/bamscaler/sourcefilmmaker/bamscaler.png I'm not embedding the image because it's over 2MiB in size. The original file is 7680x4320. #!/bin/bash convert 0000.tga \( +clone -colorspace r...
- 2012-09-23T13:34:39-07:00
- Forum: Digital Image Processing
- Topic: The rehabilitation of gamma
- Replies: 1
- Views: 9331
Re: The rehabilitation of gamma
This is a very interesting topic to me; I've always wanted to read about linearity and how it applies to signals and the processing of them.
- 2012-09-22T23:40:13-07:00
- Forum: Digital Image Processing
- Topic: Enlarge with sRGB, RGB, LAB, LUV, XYZ, sigmoidal,... gamma?
- Replies: 113
- Views: 272783
Re: Enlarge with sRGB, RGB, LAB, LUV, XYZ, sigmoidal...?
Yes I am.fmw42 wrote:A sigmoidal contrast value of 8 is more in range with what Nicolas Robidoux has been using.
Are you trying to use the same filter for both enlarging and reducing?