well Peppe, again. as far as i understand, we are loading the Raster Data and Image to memory completely! with _our_ Raster-Image framework ;). so however good a image readers memory management is, the bottleneck is our implementation. what we do is - read the image data via driver - create a 2D data array (rasterdata) _and_ an image representation for display purposes both are held in memory in full, so the bigger the raster data ...
as a first step i could imagine to write the image to a temp file and use JAI driver to access it in turn. that way we would free some memory. ..ede On 02.12.2021 13:53, Giuseppe Aruta wrote: > Hi Ede, > Does Apache commons manage the memory in a better way than JAI/ImageIO? > I really don't disagree with switching to Apache Commons and, thus, > simplifying the code. > RasterImageIO support also reading (some) JPG 2000 (via JAI) which is not > supported by Apache Commons. > Peppe > > Il giorno gio 2 dic 2021 alle ore 12:04 <edgar.sol...@web.de > <mailto:edgar.sol...@web.de>> ha scritto: > > On 02.12.2021 06:52, jump-pilot-svn--- via Jump-pilot-devel wrote: > > Revision: 6677 > > http://sourceforge.net/p/jump-pilot/code/6677 > > Author: ma15569 > > Date: 2021-12-02 05:52:46 +0000 (Thu, 02 Dec 2021) > > Log Message: > > ----------- > > Inverted B/W color display for raster. TODO: to adopt to OpenJUMP 2.0 > > > > as Raster is completely held in memory anyway what about switching over > to Apache Commons Imaging in OJ2 completely? i added a plain display test > implementation to the Commons Imaging Reader w while ago. > > ..ede > > > _______________________________________________ > Jump-pilot-devel mailing list > Jump-pilot-devel@lists.sourceforge.net > <mailto:Jump-pilot-devel@lists.sourceforge.net> > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel > > > > _______________________________________________ > Jump-pilot-devel mailing list > Jump-pilot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel > _______________________________________________ Jump-pilot-devel mailing list Jump-pilot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
