Zachary, is it different from gdal_rasterize with the burn option ?
Even > Dear developers, > I would like to contribute some code to the project. I have a > utility I call gdal_clip I wrote wrote in C++, which I used to compile > against the FWTools gdal .lib file and later Mr. Szekeres .lib files, > which will "clip" an image. It uses an input image and an input polygon > shapefile, and where the polygons in the shapefile overlap the image, it > will fill them in with a chosen color (defaults to black). It will NOT > resize the output image in any way. > This was useful for me to black out, or white out areas of tiles > in orthophoto projects that were outside the project boundary (outside > of control network and therefore of low accuracy). I am out of the > photogrammetry business, but I have photogrammetry colleagues who wish > for me to recompile this every time there is a new set of builds on > gisinternals.com/sdk, so it may be useful to build it into GDAL's code. > It is pretty optimized, not doing a pixel-in-polygon check for > EVERY pixel, but breaking the image into tiles and then breaking those > tiles into quarters only if they intersect the polygons, and so forth > down to individual pixels. It works correctly with doughnut polygons > and rotated images. I probably need to pretty up the code in some way > friendly to Doxygen, but otherwise it is ready to go. > In the future I'd like to generalize the code to deal with > polygons from any vector data source that OGR reads, and optionally > resize an image to cut it down if large parts are clipped. It would > also be nice to make it smart enough to reproject the input polygons to > the image's coordinate reference system if they are not the same. I > also think right now it only reads in and outputs TIFF images. But > again, I think it is useful right now. Please let me know if you all > think this would be useful or would like the code to see. > It is all MIT license right now, but could be changed to GDAL's > standard license if necessary. > > -Zack Stauber > Albuquerque, New Mexico > United States > > _______________________________________________ > 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
