Re: [gdal-dev] Impact of tile size on artifacts in

2017-11-15 Thread Jacob Adams
> I wouldn't expect that effect to be as strong as you observed, but indeed > there are technical > grounds for your findings. When a tile is partial, ie for the right most or > bottom most tiles > when tile size is not a multiple of the tile dimension, the TIFF format still > impose that the

Re: [gdal-dev] Impact of tile size on artifacts in JPEG-compressed Tiffs

2017-11-15 Thread jratike80
Jacob Adams wrote > I'd like to check my understanding of the impact of the tile size on > JPEG-compressed geotiffs. > > I've been getting dark bands 4 or 5 pixels wide on the bottom and right > edges of the image when manually creating large image tiles from a > collection of smaller tiles. I'm

Re: [gdal-dev] Impact of tile size on artifacts in JPEG-compressed Tiffs

2017-11-15 Thread Even Rouault
On mardi 14 novembre 2017 13:16:40 CET Jacob Adams wrote: > I'd like to check my understanding of the impact of the tile size on > JPEG-compressed geotiffs. > > I've been getting dark bands 4 or 5 pixels wide on the bottom and right > edges of the image when manually creating large image tiles fro

[gdal-dev] Impact of tile size on artifacts in JPEG-compressed Tiffs

2017-11-14 Thread Jacob Adams
I'd like to check my understanding of the impact of the tile size on JPEG-compressed geotiffs. I've been getting dark bands 4 or 5 pixels wide on the bottom and right edges of the image when manually creating large image tiles from a collection of smaller tiles. I'm using the common aggressive