[QGIS-trac] Re: [Quantum GIS] #996: Re: [Quantum GIS] #996: QGIS corrupts JPEG2000 colors

[Quantum GIS]

#996: Re: [Quantum GIS] #996: QGIS corrupts JPEG2000 colors
-----------------------------------------------------+----------------------
        Reporter:  coatman                           |         Owner:  nobody       
            Type:  defect                            |        Status:  reopened     
        Priority:  major: does not work as expected  |     Milestone:  Version 1.0.1
       Component:  Rasters                           |       Version:  HEAD         
      Resolution:                                    |      Keywords:  kakadu raster
Platform_version:                                    |      Platform:  OS X         
        Must_fix:  No                                |   Status_info:  0            
-----------------------------------------------------+----------------------
Comment (by Coatman):

 The tests run, the results shown on my web page
 homepage.mac.com/gregcoats/jp2.html and the comments above by ersts and
 kyngchaos show that the current QGIS does not properly display JPEG2000
 images using Jasper, nor does the current QGIS properly display JPEG2000
 images using Kakadu, under (at least) Ubuntu 8.10 and Mac OS X 10.4 and
 10.5.  Since this team is more familiar with Jasper, I respectfully
 suggest that the first step is to get QGIS properly displaying JPEG2000
 images with Jasper.  Then I could then see if fixing QGIS with Jasper
 results in QGIS also being fixed with Kakadu.

 Frank and I already have the Kakadu source code.  I offered to pay for a
 copy for  William, but  he is unable to accept money.  I paid for my copy
 of Kakadu.  Professor Taubman has offered to supply an additional copy of
 Kakadu, free, and I have relayed that offer here, but no one has asked me
 for this additional copy of Kakadu, so I have been unable to pass along a
 request with contact info to the Kakadu licensing folks in Australia.

 It seems that the best approach now is to get QGIS properly displaying
 JPEG2000 images with Jasper, and after that I would personally take on the
 task of at least seeing if QGIS would properly displays JPEG2000 images
 with Kakadu.  Plus if QGIS properly displayed JP2 images with Jasper but
 not with Kakadu, then I could get the Kakadu group to investigate and fix
 that situation.  But it is essentially a prerequisite that we have QGIS
 properly displaying JP2 images with Jasper.

 QGIS is currently displaying GeoJP2 images properly georeferenced, with
 the proper number of columns, and the proper number of rows, but with
 altered colors.  So it is reasonable to think that since displaying JP2
 images with both Jasper and Kakadu exhibits the same altered colors
 symptoms, a change that works with Jasper will also likely work with
 Kakadu.

 The altered colors are not in ArcGIS, nor in the early versions of QGIS.
 Since I have waited 9 months, and recently offered money, I do not know
 what else I can do, particularly in this forum.  I would be glad to talk
 more directly with anyone interested in a resolution.  My email is
 gregcoats at mac.com I can telephone any one, any where, and am available for
 an iChat with audio or audio+video.  Without some resolution of the
 displaying altered colors, the only solution I see is buying ArcGIS.

-- 
Ticket URL: <http://trac.osgeo.org/qgis/ticket/996#comment:35>
Quantum GIS <http://qgis.org>
Quantum GIS is an Open Source GIS viewer/editor supporting OGR, PostGIS, and GRASS formats