Re: [gdal-dev] Compression Artifacts After Merging Imagery

2017-09-28 Thread Even Rouault
> On a different topic altogether, how would I go about contributing to > the doxygen-created documentation? In playing around with gdal_rasterize > I discovered that it's not clear in the current docs what options > trigger creation of a new raster instead of overwriting an existing > raster. My C

Re: [gdal-dev] Compression Artifacts After Merging Imagery

2017-09-28 Thread Jacob Adams
Evan, Thanks for your help. Adjusting the nearblack parameters and using -setalpha instead of -setmask got the mask working as expected. I'd normally agree with you on mid-process compression, and if I were using the data for any kind of analysis I would do as little compression as possible. How

Re: [gdal-dev] Compression Artifacts After Merging Imagery

2017-09-25 Thread Even Rouault
On lundi 25 septembre 2017 16:16:26 CEST Jacob Adams wrote: > Oh ye great minds of the GDAL world, I've run into a problem that I've not > been able to solve. > > I have aerial imagery comprised of about 1500 jpegs that I am trying to > merge together into three large (~18gb) jpeg-compressed geoti

[gdal-dev] Compression Artifacts After Merging Imagery

2017-09-25 Thread Jacob Adams
Oh ye great minds of the GDAL world, I've run into a problem that I've not been able to solve. I have aerial imagery comprised of about 1500 jpegs that I am trying to merge together into three large (~18gb) jpeg-compressed geotiffs to be served by Geoserver. The images are tiled such that they