A new method has been added to the templatematch function: "Orientation Correlation". A comparison between Orientation Correlation and Normalized Cross Correlation can be seen on the right.
Orientation Correlation was possible before with the toolbox but required a pre-processing. See the FAQ.
I have written a function called geoimread which lets you read sections of a large geotiff or GeoJP2. I recently managed to workaround a mapping toolbox dependency in geoimread, and for that reason I have now included it in ImGRAFT.
Additionally we have included two other functions called animatepair and alphawarp. animatepair is useful for inspecting image pairs and troubleshooting. alphawarp is a helper function can help you drape your results semi-transparently over a background image.
Our updated manuscript outlining the ImGRAFT toolbox has now been published in the
journal Geoscientific Instrumentation, Methods and Data Systems.
The paper includes numerous new figures that aid the explanation of the ImGRAFT processing chain.
Take a look here...
Messerli, A. and Grinsted, A.: Image GeoRectification And Feature Tracking toolbox: ImGRAFT,
Geosci. Instrum. Method. Data Syst., 4, 23-34, 2015, doi:10.5194/gi-4-23-2015
Our second paper using ImGRAFT is now in discussion in the Cryosphere discussions. In this paper we apply ImGRAFT to Landsat 8 images to measure the velocity & discharge of five major outlet glaciers in Greenland. We get some exciting results, but will wait talking about them till the paper is accepted.
For now you can take a look at the discussion paper here.
Citation: Messerli, A. and Grinsted, A.: Image GeoRectification And Feature Tracking toolbox: ImGRAFT, Geosci. Instrum. Method. Data Syst. Discuss., 4, 491-513, doi:10.5194/gid-4-491-2014, 2014.
I have included the Batura, Schneefernerkopf, and Bindschadler examples in the toolbox in addition to the Engabreen demo. The data files for these new examples will be downloaded on demand in order to minimize the download size of the toolbox itself.
I have also implemented a work-around for a matlab clipping plane bug that was affecting the templatematch progress window.
ImGRAFT has been unveiled. (plus we have fixed some cosmetic issues in the code.) We are happy that there appears to be some interest in our toolbox (see the map of sessions over the weekend).
Download and try it out.
Please provide feedback. Report bugs and missing features. Are there rough spots in the documentation? And if you can contribute with code or fixes, then please do.
It would also be great with some non-cryosphere examples.
A first go at the documentation pages has been written. Please go take a look.
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