23.12.2007, 11:55
Carried out some SRTM data manipulation. This is still very rough and involves RGB correction and SRTM correction curves. My RGB correction curves still need some wok to be done to get more accuracy. Maps are based on the Scottish highlands, SRTM data link:
ftp://e0srp01u.ecs.nasa.gov/srtm/versio ... 3/Eurasia/
File: N56W005.hgt
This has been suitably scaled so that 1 pixel = 200m. The lowest level terrain is still not mapped properly, need to tweak my correction curves to sort this out. If you look very carefully at the "before" picture you can see the very small undulations before they are corrected.
Before:
![[Image: NEVISUNCORRECTEDROUGHscreencapture.jpg]](http://i272.photobucket.com/albums/jj183/Clock_Watcher/NEVISUNCORRECTEDROUGHscreencapture.jpg)
After:
![[Image: NEVISCORRECTEDROUGHscreencapture.jpg]](http://i272.photobucket.com/albums/jj183/Clock_Watcher/NEVISCORRECTEDROUGHscreencapture.jpg)
Software:
MicroDEM
Gimp
ftp://e0srp01u.ecs.nasa.gov/srtm/versio ... 3/Eurasia/
File: N56W005.hgt
This has been suitably scaled so that 1 pixel = 200m. The lowest level terrain is still not mapped properly, need to tweak my correction curves to sort this out. If you look very carefully at the "before" picture you can see the very small undulations before they are corrected.
Before:
After:
Software:
MicroDEM
Gimp