|
|
| GeoCommunity Mailing List |
| |
| Mailing List Archives |
| Subject: | [gislist] Georeferencing raster corners |
| Date: |
03/22/2004 03:45:01 AM |
| From: |
Bijnanendra Kar |
|
|
Hi Listers,=0A=0AI am trying to georeference a raster by just inputting the=
set of known=0Alat/longs at the four image corners such as upper left, upp=
er right, lower left and lower right. Most of the softwares ask to provide =
the set of source control points and the respective destination control poi=
nts to execute the task. After picking the source control point on the rast=
er corner, we can provide the destination control point in terms of lat/lon=
g values by keyboard instead of picking the point on the map. I am sure thi=
s is an effective way to increase accuracy.=0A=0ABut the problem is that, I=
am not finding a way to exactly pick the corners of the raster when provid=
ing source control point as there is no snapping option available. So, the =
result is that, there is a little deviation from the actual position. If th=
ere would be an option, either to provide the source control points as lat/=
long values by keyboard or if any software automatically tracks the four co=
rners of the raster as source points, I think the raster would be fitted ex=
actly.=0A=0ACan anyone suggest that, if there is any softwares/methodologie=
s/techniques available, which can solve this problem.=0A=0ARegards,=0ABigyan
_______________________________________________
gislist mailing list
gislist@lists.geocomm.com
http://lists.geocomm.com/mailman/listinfo/gislist
_________________________________
This list is brought to you by
The GeoCommunity
http://www.geocomm.com/
Get Access to the latest GIS & Geospatial Industry RFPs and bids
http://www.geobids.com
|
|
Sponsored by:
For information
regarding
advertising rates
Click Here!
|
