>1) hw accelerated functions as IPP or GPU (e.g CUDA) This is my (ongoing) Google Summer of Code project, except I'm using OpenCL. :D
What resampling algorithm are you using? ~Seth On Thu, June 10, 2010 1:49 am, Stefano Moratto wrote: > I use GDAL in my traffic optimization CAD program. > It is a Win32 application written in DELPHI that uses GDAL "C" API - the > binding was autogenerated by my SWIG module for object pascal. > > I use GDAL to download tiles (jpeg) from OpenstreetMap and to compose a > bitmap of the area that is being viewed. The resulting bitmap (not > compressed) is warped and displayed. > > The performances are quite acceptable but when I try to print they are > not. > > The drawing to be printed has a resolution larger of the screen (Screen : > 1024x1024, Printer 4096 x 4094 in A4 and 9000 x 9000 in A3 approximately). > I think tha the bottleneck could be found in: > 1) jpeg decompression. > 2) bitmap interpolation (I use the low qualitiy settings). > 3) warping ( I use an approsimated warping function). > > An increase of performance could be achieved using > 1) hw accelerated functions as IPP or GPU (e.g CUDA) > 2) parallel alghorithms that takes advantage from multicore CPU > > Has someone already approched these problems? > > Regards, > Stefano > > > -- > Dr.Eng. Stefano Moratto > [email protected] > [email protected] > http://www.csiat.it - Traffic Optimization Software > _______________________________________________ > gdal-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/gdal-dev _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
