Exploiting Digital Imagery for Snow Surface Retrieval on Sea Ice

Adam Steer2 :: Petra Heil1,2 :: Jan Lieser3 :: Rob Massom1,2

[1] Australian Antarctic Division :: [2] Antarctic Climate and Ecosystems Cooperative Research Centre :: [3] Gateway Antarctica, Institute of Marine and Antarctic Science

A brief history of sea ice aerial photography from Australian programs

pre-2007: acquire minimal overlap, trying to make as few repeat observations as possible. Focus on floe size.
2007-2008: change of plan - shoot as fast as possible! Still looking for ice floes, starting to work on other characteristics: classifying ice types, tinkering with 3D reconstruction
2009-2012: bigger camera, more pixels, more colour depth. Currently a dataset needing an analyst or ten! Subject of this talk
2012+ experimenting with remotely piloted airborne systems

Here we focus on imagery collected in 2012 on the SIPEX II voyage, from a big drone.

RAPPLS pic to go here

Topography from imagery

- show a pretty picture here of a sea ice sampling site

then show a plot of photogrammetric elevation vs transect elevation, and distributed sampling site elevations

Snow depth from topography

- show a pretty picture here of a sea ice samplone site

Sructures in snow topography

snow types from imagery

Object based image analysis

Problems to solve

Thanks!

This talk: https://adamsteer.github.io/talks/polar2018/#/1

An interactive 3D ice floe: (tba)

Bibliography

[to do - get DOIs and links]
Paget et al 2005
Steer et al 2008
Worby et al 2008
Hutchings et al 2012
Oszoy-Cicek et al 2013
Steer 2016 (PhD thesis)
Sturm et al (snow)
the ICEBRIDGE snow topography classification paper