[Talk-GB] Cliff editing

[Tom Crocker]

On Mon, 22 Aug 2022, 12:24 Russ Garrett, <russ at garrett.co.uk> wrote:

> It's worth noting that orthorectification will struggle with cliffs at the
> best of times (i.e. the accuracy of the aerial imagery will be lower where
> gradient is steeper), so I wouldn't expect great accuracy when mapping them
> from aerial imagery. Cliffs mapped in the "middle" may well have been
> mapped at the top in older imagery.
>

Agreed. LIDAR, if available, is very helpful here (and of course a GPS with
a good signal).

>
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