Jump to content

DEM from IKONOS 0.8m Resolution Stereo Satellite Imagery


Hascen

Recommended Posts

Sure.

1: Make sure you have several ground control points (5 per image, distributed around the picture, ought to do it although if you have very hilly terrain then you should use more...) with XY (use an ortho image) and Z (use an existing DEM) (alternatively you can go out in the field and measure it yourself) where the ground control points are on ground level (i.e. a road intersection, not a building).

2: Use LPS in ERDAS to load the stereo imagery in and then ground reference away.

3: Automatically generate tiepoints and check up on RMSE values (that they are not too high, otherwise you will have verify that the ground control points are on the correct location)

4: After this, you can generate a DSM and adjust it with the eATA or aATA software to filter, adjust and view the points in ERDAS. These points can then be exported to a contour, TIN or Raster.

Good luck!

  • Like 1
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.

Disable-Adblock.png

 

If you enjoy our contents, support us by Disable ads Blocker or add GIS-area to your ads blocker whitelist