Hi Jukka, Thanks for the information. As you point out, support for such a flexible format as JP2000 is tricky. Without a large library of diverse image samples encoded with different codecs, it would be difficult to test effectively, so it is good to hear you have 3 TB of data.
There do seem to be a number of JPEG2000 sources, including a JAI plugin from sun, and JJ2000 (a Java reference implementation with source). Actually I would prefer a native code cross-platform command line utility that can extract image tiles. In fact, I have been waiting and hoping that Lizardtech would add JP2000 to their utility. This would make it trivial for our MRSID plugin to support the format. But so far I haven't had any customers with JPEG2000 images, so I won't be working on implementing it any time soon. regards, Larry Becker On 7/17/07, Rahkonen Jukka <[EMAIL PROTECTED]> wrote: > Hi, > > I think that the alternatives for wavelet based compression of geospatial > imagery are MrSID, ECW and JPEG2000. I wouldn't be very afraid of the > submarine patents, JPEG2000 has been there a long time already and it is > rather widely used for geospatial and medical imagery. Digital cinema will > use JPEG2000 as well. I wonder how long those submarine patent holders would > wait with their claims? > JPEG2000 is fine and extremely flexible format, but just the flexibility > makes it a bit tricky to use. I have been playing several years with JPEG2000 > and I have about 3 terabytes JPEG2000 imagery I can use for testing if > someone gets interested in adding JPEG2000 support to OpenJUMP. > To have something to compary with, www.kakadusoftware.com has free demo > utilities, including compression/decompression utilities and a fast JPEG2000 > viewer. The viewer is for Windows only because of some platform dependent > accelaration code, but other utilities work with Unix/Linux/Mac as well. > Usage examples shipped with demos give also an idea about the flexibility of > JPEG2000 standard :) > I don't know if there are other Open source Jpeg2000 libraries than Jasper. > Some major commercial ones are made by Aware, Kakadu, Luratech and Pegasus. > Lizardtech and Ermapper (MrSID and ECW makers) support JPEG2000 as well in > their SDKs. I do not know the pricing of other SDKs, but I suppose that > individual non-commercial Kakadu license worth 250 Australian dollars would > be enough for OpenJUMP. The web page says 'This license is sufficient for the > development and distribution of JPEG2000 "freeware".' With ERMapper > ECW/JPEG2000 the situation may be unclear now because Leica Geosystems bought > the company. > I would really like to see some day a GIS application supporting image > streaming with JPIP protocol, which is now an accepted part of JPEG2000 > standard. Kakadu demos include JPIP server as well. If someone gets > interested I can send a link to my JPIP server that can be accessed with > Kakadu viewer, or with the IAS viewer by ITT Visual Information solutions > http://www.ittvis.com/ias/index.asp? > > -Jukka Rahkonen- > > > > > -----Alkuperäinen viesti----- > > Lähettäjä: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] > > Puolesta Sunburned Surveyor > > Lähetetty: 17. heinäkuuta 2007 2:24 > > Vastaanottaja: List for discussion of JPP development and use. > > Aihe: Re: [JPP-Devel] GeoJP2 > > > > This is interesting. It sounds like the JPEG 2000 committee didn't > > know if there were submarine patents, and I wonder if this was stated > > by the committee as a way to deflect liability. > > > > Is there any opinion on whether there is a danger of the JPEG 2000 > > format being shot down by a patent claim? Is there a good alternative > > to the format? > > > > The Sunburned Surveyor > > > > On 7/13/07, Larry Becker <[EMAIL PROTECTED]> wrote: > > > See the Wikipedia article on JPEG 2000 for comments on > > legal issues re: JP2000: > > > > > > http://en.wikipedia.org/wiki/JPEG_2000#Legal_issues > > > > > > It seems OK, but it pays to be informed. > > > > > > Larry > > > > > > > > > On 7/13/07, Michaël Michaud <[EMAIL PROTECTED]> wrote: > > > > Paul Austin a écrit : > > > > > > > > >Has anyone done any work with GeoJP2 in Java or JUMP? > > > > > > > > > > > > > > Not that I know, I think it would be a great replacement > > for ecw and > > > > mrsid which are proprietary formats > > > > > > > > Michaël > > > > > > > > >Paul > > > > > > > > > > > >------------------------------------------------------------- > > ------------ > > > > >This SF.net email is sponsored by DB2 Express > > > > >Download DB2 Express C - the FREE version of DB2 express and take > > > > >control of your XML. 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