[GRASSLIST:4009] Re: Landsat image mosaicing

[Ian MacMillan]

You first need to get rid of that black space around the edge by 
running r.null on both tiles.  If you are worried about losing 
information in the image (all zeros) then you could run r.null again 
after you have r.patch'ed the tiles together (and set your region), and 
set all your nulls back to zero.

Your colors are always going to be different on each tile (each tile 
was taken at different times, with different lighting, different 
terrain, etc.) but it should be fine.

Good luck,
Ian



On Jul 23, 2004, at 12:07 AM, Firman Hadi wrote:

> Dear all,
> I've been trying to mosaic two scenes of Landsat images (2 rows) by
> using i.image.mosaic.tcl in GRASS 5.3.0 and r.pacth. I want the mosaic
> image will be smooth, but the result is far from good.
> I hope any of you could help me to solve this problem.
> Thanks for your help.
>
> Regards,
>
> Firman Hadi,
> Research Group on
> Monitoring Environmental Dynamics (ReGMED),
> Department of Geodetic Engineering and Geomatics,
> Institute Technology of Bandung,
> Jl. Ganesha 10, Bandung
> INDONESIA
> <mosaic.png>