Opened 12 years ago

Closed 12 years ago

#90 closed task (fixed)

Experiment with and compare processed LIDAR to NextMAP

Reported by: mggr Owned by: benj
Priority: alpha 4 high Milestone: The Glorious Future
Component: Processing: LIDAR Keywords:
Cc: Other processors:

Description

Have a look at the LIDAR point cloud available in ~arsf/arsf_data/in_progress/2007/flight_data/uk/GB2007_06-2007_192a_Dorchester (lidar/07*).

Attempt to process it into a DEM and any necessary cleanup using GRASS (Environment Agency use GRASS too). Ask me to talk you through the data format (it has some weirdities) before you start.

Compare against the existing NextMAP DEM (tiles sy69,sy78,sy79) to see how 'good' the result is.

Document GRASS procedure on the wiki! (maybe http://www.npm.ac.uk/rsg/projects/arsf/trac/wiki/Processing/LIDARDEMs)

Attachments (1)

lidar_nextmap_diff.png (64.0 KB) - added by benj 12 years ago.
Difference map between Nextmap and Lidar DEMs

Download all attachments as: .zip

Change History (2)

Changed 12 years ago by benj

Difference map between Nextmap and Lidar DEMs

comment:1 Changed 12 years ago by benj

  • Resolution set to fixed
  • Status changed from new to closed

Successfully created a DEM from the Dorchester lidar set and documented process on the wiki (including a couple of relevant scripts).

Difference map/profile between Nextmap DEM and DEM generated from LIDAR dataset:
Difference map between Nextmap and Lidar DEMs

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