Belaid, GDAL uses various interpolation/resampling algorithms like nearest neighbour, bilinear, cubic, cubic spline and lanczos. However, I think these may not be what you are looking for.
Computing the overlap of pixels of two images should not be a complex process. You may find some ideas with anti-aliasing techniques. On Sat, Sep 12, 2009 at 12:36 PM, Belaid MOA <belaid_...@hotmail.com> wrote: > Hi everyone, > I have two elementary questions about how GDAL maps the pixel/line of one > image to an other image. > Suppose we have two GeoTiff images with different spatial resolutions and > projections. > According to GDAL code, a pixel/line (i,j), more precisely its center > (i+0.5,j+0.5), of the first image is mapped to the pixel/line (p,q) of the > second image, where p and q are doubles that usually have fraction parts. > My questions are: what is the meaning for these fractions? Is it possible to > use these fractions to compute the overlap between > the pixels of the two images using GDAL? > > Any help on this is very appreciated! > Thank you very much in advance. > > ~Belaid. > > > > > ________________________________ > Less clicking: Hotmail access on the new MSN homepage. > _______________________________________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/gdal-dev > -- Best regards, Chaitanya kumar CH. _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
