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terraref/extractors-hyperspectral: Nov 2017 Beta Release

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

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  "publisher": "Zenodo", 
  "DOI": "10.5281/zenodo.1157123", 
  "title": "terraref/extractors-hyperspectral: Nov 2017 Beta Release", 
  "issued": {
    "date-parts": [
  "abstract": "<p>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.</p>\n<p>The hyperspectral calibration procedure is documented at <a href=\"\"></a>.</p>\nLimitations\n<ol>\n<li>Only valid for 300-800nm (range of downwelling radiometer)</li>\n<li>Raw hyperspectral exposures are calibrated for images in full sunlight. Other times and cloudy days are not well-tested yet. </li>\n<li>Zenith angles used in the calibration data are: 42.3, 47.6, 53.0, 58.4, 64.0, 75.1, 80.7, 86.5<ul>\n<li>The closer the raw data is to these angles the better the result  </li>\n</ul>\n</li>\n<li>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).</li>\n</ol>\nRelated GitHub issues and documentation\n<ol>\n<li><a href=\"\">Notes from meeting on calibration options</a></li>\n<li>First (alpha) calibration proceedure <a href=\"\"></a></li>\n<li>Second (radiometer based) calibration <ul>\n<li>List of tasks <a href=\"\"></a> </li>\n<li>Algorithm documentation <a href=\"\"></a></li>\n</ul>\n</li>\n</ol>", 
  "author": [
      "family": "JeromeMao"
      "family": "Max Burnette"
      "family": "hmb1"
      "family": "Charlie Zender"
      "family": "David LeBauer"
  "version": "v1.0", 
  "type": "article", 
  "id": "1157123"
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