[Vm-dev] My work featured at Nature News!

Juan Vuletich JuanVuletich at zoho.com
Thu May 25 13:22:07 UTC 2017

On 23/05/2017 01:15 p.m., Ben Coman wrote:
> On Tue, May 23, 2017 at 11:47 PM, Juan Vuletich <JuanVuletich at zoho.com 
> <mailto:JuanVuletich at zoho.com>> wrote:
>     Hi Folks,
>     Satellogic was featured today at Nature News!
>     http://www.nature.com/news/earth-observing-companies-push-for-more-advanced-science-satellites-1.22034
>     <http://www.nature.com/news/earth-observing-companies-push-for-more-advanced-science-satellites-1.22034>
>     I helped design and build the hyperspectral cameras in our
>     satellites Fresco and Batata. And I wrote the geometric and
>     spectral processing software for that image. This is not
>     completely off topic, though: The geometric software (image
>     rectification and correction), the most complex part of the
>     processing, was written by me in Cuis Smalltalk, and runs in a
>     Cuis Smalltalk + OpenCL application.
>     Please share my joy today!
>     -- 
>     Juan Vuletich
>     www.cuis-smalltalk.org <http://www.cuis-smalltalk.org>
>     https://github.com/Cuis-Smalltalk/Cuis-Smalltalk-Dev
>     <https://github.com/Cuis-Smalltalk/Cuis-Smalltalk-Dev>
>     @JuanVuletich
> Its great to hear of joy in work.  It was interesting to read "The 
> company announced in January that it would give researchers free 
> access to its 30-metre-resolution hyperspectral data. These span 
> optical and near-infrared wavelengths and can help track water 
> pollution and oil spills, and monitor the health of forests and crops."

Yes. We hope to make a difference.

> Is your geometric software useful dataset users?  Or is it just for 
> preprocessing to prepare saleable data?
> Is its available to end-users?  Or is it secret sauce?
> cheers -ben

The image rectification and geolocation is used to produce the images 
most people can use. The idea is to go from pictures taken from the 
point of view of the satellite at the moment they were taken (each with 
a different perspective) and turn them into a map-like (or Google Maps 
like) geometry. This is especially important to be able to track the 
evolution of stuff at some point on Earth: you need images from 
different points in time, and they need to be able to "stack" them. You 
also need to know exactly where each pixel is located (i.e. latitude and 
longitude). End users don't need this software: the images we provide 
are already corrected.

There are various ways to do this in the industry. We are using a rather 
unusual approach and I have developed some novel techniques, that lets 
us do this with far less computational cost that usual. These is 
currently proprietary technology. I intend to be able to publish them as 
part of a Ph.D. thesis on C.S. in a not too distant future. I talked 
about all this at 


Juan Vuletich

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