Quoting "Thelen, Bruce" <bthe...@corelogic.com>: > Christian, > > As per your statements below, it seems that at this time the > functionality Baskar is working on for this purpose is not yet > justified for inclusion in the GeoTools libraries themselves but we > intend to keep working on this functionality and appreciate your > guidance thus far.
Yep, I am happy about integrating the custom jdbc access in the geotools module. Thanks for the inspiration. > > We need to look further into the mosaicing of rows in the Oracle > GeoRaster table so we can validate or invalidate this use case. We > are doing in fact what you state should not work, that is pyramiding > each row in the table separately but making sure to create the same > number of pyramid levels for each row, then mosaicing those rows > together at runtime so we can more easily manage the raster and > replace pieces of the raster, but making them logically appear to be > one large raster. To summarize the facts. Bilinear Interpolation calculates one pixel from the 4 neighbors, Bicubic needs 16 pixels from the neighborhood. The problems are the border of your tiles. For updating, I would evaluate http://download.oracle.com/docs/cd/E11882_01/appdev.112/e11827/geor_ref.htm#CACHBIAE > > Despite the fact that we are not ready for inclusion, we would still > like to see the developer agreement so we can determine if we > should have these in place anyway. The developers docu is here http://docs.codehaus.org/display/GEOT/Home In section 4 of the developers guide you can see your possibilities for participation. In this section you find the link http://docs.codehaus.org/download/attachments/9765352/GeotoolsAssignmentToOSGeo.pdf?version=1 > > Thanks again, > Bruce > > -----Original Message----- > From: christian.muel...@nvoe.at [mailto:christian.muel...@nvoe.at] > Sent: Thursday, May 13, 2010 1:21 AM > To: Baskar, Dhanapal > Cc: geotools-devel@lists.sourceforge.net > Subject: Re: [Geotools-devel] Proposed Mosaicing GeoRaster Module > > Hi Baskar, it looks like you want to denote your code to geotools. I > am not sure > about that. What we can do in any case, we could attach your code as > an example to the documentation. This would be nice. I assume your > customer has allowed you to publish your code. > > @Andrea, any legal problems if we add the code as an example to the wiki ? > > The other possibility is to really integrate your code into geotools. > If you like to do that, there are some additional things to check. > > 1) I think your db layout is using one table to store the tiles. Do > you create pyramids for each tile ?. If this is the case, then we can > stop here since pyramids have to be built from the whole image, > otherwise it is not correct. > The correct way would be to create the pyramids yourself and store > them in different tables or add an db attribute "pyramidlevel" to the > db table. > Btw, this is the way how to do it with postgis wkt raster. > > 2) If we can clarify 1) , you have to add Online Tests, see > H2CustomTest and GeorasterOnlineTest as an example. I have to check > against Orcale 10.2 > > 3) You must sign a developer agreement (I do not know the exact name > for this paper). > > What are your preferences > > > > *************************** > This message may contain confidential or proprietary information > intended only > for the use of the addressee(s) named above or may contain > information that is > legally privileged. If you are not the intended addressee, or the person > responsible for delivering it to the intended addressee, you are hereby > notified that reading, disseminating, distributing or copying this message is > strictly prohibited. If you have received this message by mistake, please > immediately notify us by replying to the message and delete the original > message and any copies immediately thereafter. > > Thank you. > **************************** > ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program. ------------------------------------------------------------------------------ _______________________________________________ Geotools-devel mailing list Geotools-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geotools-devel
