There is a newer version of this record available.

Software Open Access

terraref/extractors-hyperspectral: Nov 2017 Beta Release

JeromeMao; Max Burnette; hmb1; Charlie Zender; David LeBauer


MARC21 XML Export

<?xml version='1.0' encoding='UTF-8'?>
<record xmlns="http://www.loc.gov/MARC21/slim">
  <leader>00000nmm##2200000uu#4500</leader>
  <controlfield tag="005">20200125072300.0</controlfield>
  <controlfield tag="001">1157123</controlfield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="u">NCSA</subfield>
    <subfield code="a">Max Burnette</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="a">hmb1</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="u">University of California, Irvine</subfield>
    <subfield code="a">Charlie Zender</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="u">University of Illinois</subfield>
    <subfield code="a">David LeBauer</subfield>
  </datafield>
  <datafield tag="856" ind1="4" ind2=" ">
    <subfield code="s">11975529</subfield>
    <subfield code="z">md5:c1851fdb440e24a01d490fa6d3f3a5b8</subfield>
    <subfield code="u">https://zenodo.org/record/1157123/files/terraref/extractors-hyperspectral-v1.0.zip</subfield>
  </datafield>
  <datafield tag="542" ind1=" " ind2=" ">
    <subfield code="l">open</subfield>
  </datafield>
  <datafield tag="260" ind1=" " ind2=" ">
    <subfield code="c">2018-01-22</subfield>
  </datafield>
  <datafield tag="909" ind1="C" ind2="O">
    <subfield code="p">software</subfield>
    <subfield code="o">oai:zenodo.org:1157123</subfield>
  </datafield>
  <datafield tag="100" ind1=" " ind2=" ">
    <subfield code="u">University of California, Irvine</subfield>
    <subfield code="a">JeromeMao</subfield>
  </datafield>
  <datafield tag="245" ind1=" " ind2=" ">
    <subfield code="a">terraref/extractors-hyperspectral: Nov 2017 Beta Release</subfield>
  </datafield>
  <datafield tag="540" ind1=" " ind2=" ">
    <subfield code="a">Other (Open)</subfield>
  </datafield>
  <datafield tag="650" ind1="1" ind2="7">
    <subfield code="a">cc-by</subfield>
    <subfield code="2">opendefinition.org</subfield>
  </datafield>
  <datafield tag="520" ind1=" " ind2=" ">
    <subfield code="a">&lt;p&gt;This is the first release of the hyperspectral pipeline. See the repository README for more details. It represents a major improvement relative to the Nov 2016 release.&lt;/p&gt;
&lt;p&gt;The hyperspectral calibration procedure is documented at &lt;a href="https://github.com/terraref/computing-pipeline/issues/282"&gt;https://github.com/terraref/computing-pipeline/issues/282&lt;/a&gt;.&lt;/p&gt;
Limitations
&lt;ol&gt;
&lt;li&gt;Only valid for 300-800nm (range of downwelling radiometer)&lt;/li&gt;
&lt;li&gt;Raw hyperspectral exposures are calibrated for images in full sunlight. Other times and cloudy days are not well-tested yet. &lt;/li&gt;
&lt;li&gt;Zenith angles used in the calibration data are: 42.3, 47.6, 53.0, 58.4, 64.0, 75.1, 80.7, 86.5&lt;ul&gt;
&lt;li&gt;The closer the raw data is to these angles the better the result  &lt;/li&gt;
&lt;/ul&gt;
&lt;/li&gt;
&lt;li&gt;The calibration needs improvement to obtain accurate absolute reflectances. Environmental conditions (such as shade and specular reflection) and irregular calibration of known targets (such as tilted surfaces and field-based calibration) can bias retrieved reflectances by an unknown factor. However, the scale bias factors out of indices created as ratios of reflectances, e.g., (A-B) / (A+B).&lt;/li&gt;
&lt;/ol&gt;
Related GitHub issues and documentation
&lt;ol&gt;
&lt;li&gt;&lt;a href="https://docs.google.com/document/d/e/2PACX-1vRKArTMn0aU90KoFKe-HCYMuFubcW_WLUZsFCWCT2rENhitzf00tLktYm6EG2DIB3X5rSRD1A1DOZhL/pub"&gt;Notes from meeting on calibration options&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;First (alpha) calibration proceedure &lt;a href="https://github.com/terraref/computing-pipeline/issues/88"&gt;https://github.com/terraref/computing-pipeline/issues/88&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;Second (radiometer based) calibration &lt;ul&gt;
&lt;li&gt;List of tasks &lt;a href="https://github.com/terraref/computing-pipeline/issues/281"&gt;https://github.com/terraref/computing-pipeline/issues/281&lt;/a&gt; &lt;/li&gt;
&lt;li&gt;Algorithm documentation &lt;a href="https://github.com/terraref/computing-pipeline/issues/282"&gt;https://github.com/terraref/computing-pipeline/issues/282&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
&lt;/li&gt;
&lt;/ol&gt;</subfield>
  </datafield>
  <datafield tag="773" ind1=" " ind2=" ">
    <subfield code="n">url</subfield>
    <subfield code="i">isSupplementTo</subfield>
    <subfield code="a">https://github.com/terraref/extractors-hyperspectral/tree/v1.0</subfield>
  </datafield>
  <datafield tag="773" ind1=" " ind2=" ">
    <subfield code="n">doi</subfield>
    <subfield code="i">isVersionOf</subfield>
    <subfield code="a">10.5281/zenodo.1157122</subfield>
  </datafield>
  <datafield tag="024" ind1=" " ind2=" ">
    <subfield code="a">10.5281/zenodo.1157123</subfield>
    <subfield code="2">doi</subfield>
  </datafield>
  <datafield tag="980" ind1=" " ind2=" ">
    <subfield code="a">software</subfield>
  </datafield>
</record>
45
12
views
downloads
All versions This version
Views 4513
Downloads 128
Data volume 157.5 MB95.8 MB
Unique views 3813
Unique downloads 96

Share

Cite as