4SM has been developped, as a personnal project, then as a hobby, in almost complete isolation, since 1994. Using first a database of SPOT images, then a very few Landsat TM images. Then using a number of CASI hyperspectral images, and even an AAHIS image. Then using Landsat TM/ETM, HYPERION and OLI images, thanks to USGS's Glovis service. Then using WV2 thanks to Digital Globe. In 2013-2015, it has matured remarkably with the introduction of several breakthroughs using OLI, WV2, CASI, HYPERION and even HICO data. Starting in 2009, I was paid good money by a proeminent consultancy firm for projects using Landsat or WV2 in Tanzania, Bahamas, Bahrain, Western Australia, Seychelles, Red Sea, and the UAE. As for the UAE project, first for a limited AOI in 2013, then for an extension six months later, then for a further extension two years later. |
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End december 2013 I joined HYPHOON to process a CASI image of Heron Island, Australia then in april 2014 I posted a demonstration for this studycase October 2014, processed a HYPERION image of Fakarava atoll, French Polynesia January 2015 processed a HICO image of Lee Stocking Island, Bahamas | |||||||||||||||||||||
February 2015 processed a pansharpened QUICKBIRD image | |||||||||||||||||||||
2016
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2021 4SM_LUT Mapping the spatial variations of the spectral diffuse attenuation coefficient over the Landsat 8 scene |
"I don't understand if you do also use the other bands + Pan"
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Over the last four years, 4SM has become far more capable (I know: hard to keep up!!). ===========Metadata===========
===========System noise=========== Time has come when the major step forward on the part of data providers should be: Please give us access to images with decent Noise-equivalent change in radiance for the purpose of shallow water work. See below: this striping in OLI images is a shame! |