Search found 34 matches

by Wolfgang Woehl
2010-08-07T00:29:15-07:00
Forum: Users
Topic: JPEG2000 Compressed TIFF problem
Replies: 7
Views: 17628

Re: JPEG2000 Compressed TIFF problem

fmw42 wrote:... except JP2000 is a lossless compression.
JPEG 2000 output can range from mathematically lossless to "extremely" lossy.
by Wolfgang Woehl
2010-08-07T00:26:39-07:00
Forum: Users
Topic: JPEG2000 Compressed TIFF problem
Replies: 7
Views: 17628

Re: JPEG2000 Compressed TIFF problem

footnoter wrote:I am trying to compress a TIFF file but selecting JPEG2000 compression leaves the file uncompressed
I don't know if ISO 12369:2004 (Tag image file format for image technology) allows for JPEG 2000 compression. Pretty sure, though, that next to no TIFF apps would.
by Wolfgang Woehl
2010-07-22T13:56:00-07:00
Forum: Users
Topic: Internal bit depth and -depth operator
Replies: 7
Views: 14841

Re: Internal bit depth and -depth operator

2 very interesting threads I had missed completely, thanks.
by Wolfgang Woehl
2010-07-21T04:40:27-07:00
Forum: Users
Topic: Internal bit depth and -depth operator
Replies: 7
Views: 14841

Re: Internal bit depth and -depth operator

In cinemaslides there are a number of ops performed in quasi-linear light (between an approximate gamma decode and a final encode). When the issue came up (hard banding in low-light zones) I tried to isolate the culprit op. Turned out the order of -gamma <encode> and -depth makes all the difference....
by Wolfgang Woehl
2010-07-20T22:46:58-07:00
Forum: Users
Topic: Internal bit depth and -depth operator
Replies: 7
Views: 14841

Re: Internal bit depth and -depth operator

I'm getting the same results with 6.5.7-8 2009-11-26 Q16 (Ubuntu 10.04's default IM) and 6.6.3-0 2010-07-13 Q16

Does -depth truncate/pad or map?
by Wolfgang Woehl
2010-07-20T14:08:42-07:00
Forum: Users
Topic: Internal bit depth and -depth operator
Replies: 7
Views: 14841

Internal bit depth and -depth operator

I'm using ImageMagick in cinemaslides (http://github.com/wolfgangw/digital_cinema_tools/blob/master/cinemaslides) to conform, resize, recolor etc. images and to create DCP slideshows. Chasing an issue with image quality degradation (with rather dark zones/material) I wondered what's going on here (s...
by Wolfgang Woehl
2010-06-11T14:16:41-07:00
Forum: Users
Topic: identify -- XML dummy -- magic says SVG
Replies: 13
Views: 24832

Re: identify -- XML dummy -- magic says SVG

Fred, I will test rsvg output. I can't steer off the target platform too far, though. cinemaslides already is an exotic little bugger. But I think now I have some sort of a handle on this.

Thanks for your advice and suggestions.
by Wolfgang Woehl
2010-06-10T15:57:29-07:00
Forum: Users
Topic: identify -- XML dummy -- magic says SVG
Replies: 13
Views: 24832

Re: identify -- XML dummy -- magic says SVG

Ubuntu's IM (6.5.7-8 2009-11-26 Q16) doesn't:

Code: Select all

$ convert -list configure | grep DELEGATES
DELEGATES bzlib djvu freetype gvc jpeg jng jp2 lcms openexr png tiff x11 xml wmf zlib
Thanks for the hints
by Wolfgang Woehl
2010-06-10T14:03:48-07:00
Forum: Users
Topic: identify -- XML dummy -- magic says SVG
Replies: 13
Views: 24832

Re: identify -- XML dummy -- magic says SVG

Neat, but not quite, I think: $ cat resistor.svg | grep -v '<!--' <?xml version="1.0" encoding="UTF-8"?> <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ev="http://www.w3.org/2001/xml-events" version="1.1" baseProfile="full" width="700px" height="400px" viewB...
by Wolfgang Woehl
2010-06-10T13:15:27-07:00
Forum: Users
Topic: identify -- XML dummy -- magic says SVG
Replies: 13
Views: 24832

Re: identify -- XML dummy -- magic says SVG

Makes sense. Thanks. With a slideshow DCP glue tool I'm writing (http://wiki.github.com/wolfgangw/digital_cinema_tools/cinemaslides) I want to be able to say $ cinemaslides * in dirs that have decodable files and non-decodable files, skipping the latter. So, apart from the SVG/XML dummy example is t...
by Wolfgang Woehl
2010-06-10T12:13:42-07:00
Forum: Users
Topic: identify -- XML dummy -- magic says SVG
Replies: 13
Views: 24832

identify -- XML dummy -- magic says SVG

$ cat xml
<?xml version="1.0" encoding="UTF-8"?>
<test/>
$ identify -format "%m" xml
SVG

and that is just wrong, isn't it? Wouldn't you want to at least check for <svg>?
by Wolfgang Woehl
2010-05-31T22:39:03-07:00
Forum: Developers
Topic: No file magic for truetype files?
Replies: 5
Views: 11181

Re: No file magic for truetype files?

Thanks. Works. Should've RTFM.
by Wolfgang Woehl
2010-05-30T23:08:43-07:00
Forum: Developers
Topic: No file magic for truetype files?
Replies: 5
Views: 11181

Re: No file magic for truetype files?

Fred, yes, obviously. I tend to think that IM's display of fonts should be aligned with the behaviour for image files (where suffixes are not relevant for finding the right delegate and file magic is used instead. But then again, maybe it's done differently?)
by Wolfgang Woehl
2010-05-30T11:30:06-07:00
Forum: Users
Topic: OCR and specific regions
Replies: 5
Views: 11033

Re: OCR and specific regions

tesseract is quite ok. Here's what it outputs from a screenshot of this thread: $ tesseract tesseract:Error:Usage:tesseract imagename outputbase [-l lang] [configfile [[+|-]varfile]...] $ tesseract english.tif text -l eng $ cat text.txt --- OCR and specific regions POSTFIEPLY Ié io Search this topic...
by Wolfgang Woehl
2010-05-30T11:14:47-07:00
Forum: Developers
Topic: No file magic for truetype files?
Replies: 5
Views: 11181

No file magic for truetype files?

$ display /usr/share/fonts/truetype/freefont/FreeMono.ttf (displays font summary) $ cp /usr/share/fonts/truetype/freefont/FreeMono.ttf foo $ display foo display: no decode delegate for this image format `foo' @ constitute.c/ReadImage/530. $ mv foo foo.ttf $ display foo.ttf (displays font summary) Th...