Thursday, February 09, 2006

PCI Orthoengine 10 a bit unstable.....



Music: Burning Airlines identikit 2001

Good news: Three Mile Pilot is recording a new album!

Bad News: PCI Orthoengine V.10 is a behaving badly

For example today I spent some time trying to orthorectify the ASTER VNIR image shown above. It is 15m resolution and has alot of elevation changes and steep mountain faces, lots of low contrast brigh glacier pixels, some clouds and deep shadows...all in all a nightmare image. I have an O.K. DEM created from some USGS vectors. Not an ideal surface to work with because of the resolution but better than nothing. Yesterday we discussed image to image registration in my image processing class. My previous attempts at correcting this image where all with the vectors from the topo map....so I began to think about trying to use a corrected Landsat ETM+ Pan band to collect GCPs. My first attempt was going well, I had 16 GCPs...did I mention I installed the new version of Orthoengine yesterday....and unfortunately assumed it had been tested and would be relatively bug free.....ooooops....so yes, 16 GCPs and my RMSE was pretty high due to 2 points that I decided to remove. Sadly this resulted in a crash and all subsequent attempts give the same result...crashes when deleting GCPs!!!

Anyone that has done this knows how tedious collecting GCPs is, and when you've got it good you dont want to start over!


Had an interesting lecture on Classification/Pattern recognition today. Looking forward to getting into neural networks on Friday...

Things on my mind:
Dasymetric Mapping
VCF approach to landcover/vegetation mapping for Auzangate region.
My presentation on: The Evolution of Landsat Data Analysis



Ordered a copy of this Atlas produced by Geographx an New Zealand mapping company. If they were hiring I'd be ready to move down under. I can honestly say that it has been a while since I saw work that impressed me so much. I can't wait to see the real thing.


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Geneology...saw the Skip Gates series on PBS last night. It really made me wonder about my roots. Oprah and other folks were talking about how they wanted to have Indian heritage when they were kids. It never occured to me growing up...but a couple years ago my mom told me she and her sisters suspected that her great paternal grandmother was a native from the maritimes (Micmac or Malecite maybe?)....So I'm thinking of doing some reasearch on this and putting a geneological map together that will link all these ancestries together....