Having a map rectified to map coordinates can be beneficial especially if you use the image a background layer for digitizing objects on a map. Currently I use rectified images for this purpose. I also can see the usefulness in geo-intelligence. Anlysists can give map coordinates of objects of concern in an image that may require on ground analysis.
The two main pitfalls I encounter in this lab were, accurate ground control points and an image that is fuzzy, which will lead to inaccurate ground control points. It is important that the image being rectified has enough landmarks to use as ground control points. If the image is of a large body of water it would be difficult to have enough landmarks in order to get a precise rectification of the image.
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment