Date: Mon 11 Feb 14:21:30 EST 2008
From: <udE.leDU|irwog#udE.leDU|irwog> Add To Address Book | This is Spam
Subject: summary of our meeting
To: ude.ledu.sicee.liam|ardnahc#ude.ledu.sicee.liam|ardnahc, ude.ledu|regiegc#ude.ledu|regiegc
To have a record of all our discussions from here on
(a copy will also be on the wiki http://ice.wikidot.com/feb11-08. Will have to create accounts for all 4 of us, so that updates, changes and other discussions can be put)
Summary of our meeting today
1. Problem vs proposal vs solution required
What is the objective - as in proposal
"quantitatively record sea ice topography at the scale of human vision in a format that can be used within scientific, operational and educational communities to better understand sea ice and its thickness, distribution, and variability. We ssek this goal though cost-effective and operationally simple instrumentation which can be used onboard any ship in the polar regions"
quantitative: depth of surface from camera, height from seal level, accuracy map, sensitivity analysis
scale of human vision: sensitivity atleast as much as a human observer
2. reconstruction vs measurement
We clarified that by reconstruction we mean structure and the project needs reconstruction + actual measurement.
3. possible ship heights and distances for swath to be finalised - Cathy will finalise after discussing with cruise members
4.Finalised that we must use calibrated system and not uncalibrated method
What will be fixed: camera zoom, extent of swath and starting distance from ship.
Approx, needs to be fine tuned: baseline, pan-tilt.
Ways to calibrate cameras:
1. must be calibrated at the distance of interest.
2. regular recalibration when docked.
3. project single laser grid - but cannot distinguish between change in distance vs change in surface structure
4. have a "stereo" projection of grids.
5. What can we get from NH Trip images - Sensitivity
To do:
1. synthetic simulation of 2 projectors and its use - to detect &/or measure change in distance/structure
2. survey laser at low temps and on ice….laser survival tool (Cathy)
survey LiDAR, IR
3. Website
1. map of station S2bh- starting point mismatch
2. write about ship simulation on roof top
3. write a overview of sensitivity analysis - distance, texture, lighting
4. write about what we have achieved, what we have observed and what will be our next expt.
June report - the approaches we took for NH trip, what we learnt and what will be our next step and why.
