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You're absolutely correct, except that the satellites do also provide thermal infrared bands and there has been some research into using nightime thermal imagery (non-stereo) to create DEMs. I'm not sure how good the quality of these DEMs would be compared to those created by traditional stereo methods though.

WhiteboxDev
– WhiteboxDev

2014-09-02 21:02:18 +00:00
Commented Sep 2, 2014 at 21:02
hmm thats an interesting approach! Any ideas where could I find references to the method of using thermal bands for DEM extraction? the title of the journal is this: DEM from Stereo Landsat 7 Data Over High Relief Areas - Toutin (2002). Do have a look!

Corse
– Corse

2014-09-03 03:01:58 +00:00
Commented Sep 3, 2014 at 3:01

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