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HRL Imperviousness

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marketajindrova edited this page Jun 17, 2021 · 7 revisions

HRL Imperviousness

The imperviousness products capture the percentage and change of soil sealing. Built-up areas are characterised by the substitution of the original (semi-) natural land cover or water surface with an artificial, often impervious cover. The imperviousness HRL captures the spatial distribution of artificially sealed areas, including the level of sealing of the soil per area unit.

Wiki pages related to HRL Imperviousness products are based on the following product documentation / specification: https://land.copernicus.eu/user-corner/technical-library/hrl-imperviousness-technical-document-prod-2015

There are seven product layers which can be run through the QC Tool:

1. Degree of Imperviousness (IMD): 2018, 10 m (Product definition)

2. Built up (IBU): 2018, 10 m (Product definition)

3. Degree of Imperviousness (IMD): 2018, 100 m (Product definition)

4. Share of Built up (SBU): 2018, 100 m (Product definition)

5. Degree of Imperviousness Change (IMC): 2015 – 2018, 20 m (Product definition)

6. Degree of Imperviousness Change (IMC): 2015 – 2018, 100 m (Product definition)

7. Degree of Imperviousness Change Classified (IMCC): 2015 – 2018, 20 m (Product definition)

Raster checks

raster.unzip

Check description: Delivery file can be unzipped

Required check, the check cannot be skipped.

raster.naming

Check description: Naming is in accord with specification

Required check, the check cannot be skipped.

Naming convention: There must be exactly one raster file with .tif filename extension;

  1. Degree of Imperviousness (IMD): 2018, 10 m
  • the filename must match regex: "^imd_(?P<reference_year>2018)_010m_(?P<aoi_code>eu)_0?3035"
    • the name must start with imd_;
    • followed by a reference year, only 2018 reference year is allowed;
    • followed by the spatial resolution; only 010m spatial resolution is allowed;
    • followed by 2-letter country code, only eu country code is allowed;
    • followed by EPSG code 03035;
    • followed by .tif extension;
    • letter case is irrelevant;
    • example of filename: imd_2018_010m_eu_03035.tif;
  1. Built up (IBU): 2018, 10 m
  • the filename must match regex: "^ibu_2018_010m_(?P<aoi_code>eu)_0?3035"
    • the name must start with ibu_;
    • followed by a reference year, only 2018 reference year is allowed;
    • followed by the spatial resolution; only 010m spatial resolution is allowed;
    • followed by 2-letter country code, only eu country code is allowed;
    • followed by EPSG code 03035;
    • followed by .tif extension;
    • letter case is irrelevant;
    • example of filename: ibu_2018_010m_eu_03035.tif;
  1. Degree of Imperviousness (IMD): 2018, 100 m
  • the filename must match regex: "^imd_(?P<reference_year>2018)_100m_(?P<aoi_code>eu)_0?3035"
    • the name must start with imd_;
    • followed by a reference year, only 2018 reference year is allowed;
    • followed by the spatial resolution; only 100m spatial resolution is allowed;
    • followed by 2-letter country code, only eu country code is allowed;
    • followed by EPSG code 03035;
    • followed by .tif extension;
    • letter case is irrelevant;
    • example of filename: imd_2018_100m_eu_03035.tif;
  1. Share of Built up (SBU): 2018, 100 m
  • the filename must match regex: "^sbu_2018_100m_(?P<aoi_code>eu)_0?3035"
    • the name must start with sbu_;
    • followed by a reference year, only 2018 reference year is allowed;
    • followed by the spatial resolution; only 100m spatial resolution is allowed;
    • followed by 2-letter country code, only eu country code is allowed;
    • followed by EPSG code 03035;
    • followed by .tif extension;
    • letter case is irrelevant;
    • example of filename: sbu_2018_100m_eu_03035.tif;
  1. Degree of Imperviousness Change (IMC): 2015 – 2018, 20 m
  • the filename must match regex: "^imc_1518_020m_(?P<aoi_code>eu)_0?3035"
    • the name must start with imc_;
    • followed by reference years, only 1518 reference years are allowed meaning the change occurred between 2015 and 2018;
    • followed by the spatial resolution; only 020m spatial resolution is allowed;
    • followed by 2-letter country code, only eu country code is allowed;
    • followed by EPSG code 03035;
    • followed by .tif extension;
    • letter case is irrelevant;
    • example of filename: imc_1518_020m_eu_03035.tif;
  1. Degree of Imperviousness Change (IMC): 2015 – 2018, 100 m
  • the filename must match regex: "^imc_1518_100m_(?P<aoi_code>eu)_0?3035"
    • the name must start with imc_;
    • followed by reference years, only 1518 reference years are allowed meaning the change occurred between 2015 and 2018;
    • followed by the spatial resolution; only 100m spatial resolution is allowed;
    • followed by 2-letter country code, only eu country code is allowed;
    • followed by EPSG code 03035;
    • followed by .tif extension;
    • letter case is irrelevant;
    • example of filename: imc_1518_100m_eu_03035.tif;
  1. Degree of Imperviousness Change Classified (IMCC): 2015 – 2018, 20 m
  • the filename must match regex: "^imcc_1518_020m_(?P<aoi_code>eu)_0?3035"
    • the name must start with imcc_;
    • followed by reference years, only 1518 reference years are allowed meaning the change occurred between 2015 and 2018;
    • followed by the spatial resolution; only 020m spatial resolution is allowed;
    • followed by 2-letter country code, only eu country code is allowed;
    • followed by EPSG code 03035;
    • followed by .tif extension;
    • letter case is irrelevant;
    • example of filename: imcc_1518_020m_eu_03035.tif;

raster.attribute

Check description: Attribute table is composed of prescribed attributes.

Optional check, the check may be skipped.

Requirements:

  • .tif.vat.dbf file with a raster attribute table is included in the delivery;

The attribute table must always contain the following attributes:

  • value, corresponds to unique codes in the GeoTiff file
  • count, corresponds to the number of raster cells belonging to each code.
  • area_km2, the area in square kilometres covered by cells with the code.
  • area_perc, the area in square kilometres covered by cells with the code, expressed as percent of total mapped area.
  • class_name, a text description of the land use / landcover class corresponding to the code.

raster.epsg

Check description: Raster uses specific EPSG code.

Optional check, the check may be skipped.

Requirements:

  • the raster must be assigned spatial reference system EPSG:3035 (ETRS89 ETRS-LAEA equal-area projection);

raster.pixel_size

Check description: Pixel has specific size.

Optional check, the check may be skipped.

Requirements:

  • the pixel size must be exactly:

10 m (for layers Degree of Imperviousness (IMD): 2018, 10 m & Built up (IBU): 2018, 10 m)

20 m (for layers Degree of Imperviousness Change (IMC): 2015 – 2018, 20 m & Degree of Imperviousness Change Classified (IMCC): 2015 – 2018, 20 m)

100 m (for layers Degree of Imperviousness (IMD): 2018, 100 m & Share of Built up (SBU): 2018, 100 m & Degree of Imperviousness Change (IMC): 2015 – 2018, 100 m)

raster.origin

Check description: Bounding box upper left corner is positioned on grid.

Optional check, the check may be skipped.

Requirements:

  • upper-left X, Y coordinates of the raster must be divisible by 1000 with no remainder;

raster.bit_depth

Check description: Raster datatype is of specific bit depth.

Optional check, the check may be skipped.

Requirements:

  • the pixel type must be Byte (8 bits per sample) (for layers Degree of Imperviousness, Built up, Share of Built up, Degree of Imperviousness Change Classified);

raster.compress

Check description: Raster uses specific compression formats.

Optional check, the check may be skipped.

Requirements:

  • the tiff file must use LZW compression;

raster.value

Check description: Pixels have specific values.

Optional check, the check may be skipped.

Requirements:

  1. Degree of Imperviousness (IMD): 2018, 10 m
  • the value of the pixel must be from the set
*     0; all non-impervious areas;
* 1-100; imperviousness values;
*   254; unclassifiable (no satellite image available, or clouds, shadows, or snow);
*   255; NoData;
  1. Built up (IBU): 2018, 10 m
  • the value of the pixel must be from the set
*     0;
*     1;
*   254;
*   255;
  1. Degree of Imperviousness (IMD): 2018, 100 m
  • the value of the pixel must be from the set
*     0; all non-impervious areas;
* 1-100; imperviousness values;
*   254; unclassifiable (no satellite image available, or clouds, shadows, or snow);
*   255; NoData;
  1. Share of Built up (SBU): 2018, 100 m
  • the value of the pixel must be from the set
*   0-100;
*   254;
*   255;
  1. Degree of Imperviousness Change (IMC): 2015 – 2018, 20 m
  • the value of the pixel must be from the set
*    0-99; decrease (0 = 100% decrease, 99 = 1% decrease...);
*     100; stable built-up;
* 101-200; increase (101 = 1% increase, 200 = 100% increase);
*     201; stable non built-up;
*     254; unclassifiable (no satellite image available, or clouds, shadows, or snow);
*     255; NoData;
  1. Degree of Imperviousness Change (IMC): 2015 – 2018, 100 m
  • the value of the pixel must be from the set
*    0-99; decrease (0 = 100% decrease, 99 = 1% decrease...);
*     100; stable built-up;
* 101-200; increase (101 = 1% increase, 200 = 100% increase);
*     201; stable non built-up;
*     254; unclassifiable (no satellite image available, or clouds, shadows, or snow);
*     255; NoData;
  1. Degree of Imperviousness Change Classified (IMCC): 2015 – 2018, 20 m
  • the value of the pixel must be from the set
*   0;
*   1;
*   2;
*   10;
*   11;
*   12;
*   254;
*   255;

raster.colour

Check description: Colour table is in accord with specification.

Optional check, the check may be skipped.

Requirements:

  • Colour table in a tif.clr format must be included in the delivery. Values from tif.clr colour table and GeoTiff colour table must match.
  1. Degree of Imperviousness (IMD): 2018, 10 m
* 0: [240,240,240]
* 1: [255,237,195]
* 50: [175,74,51]
* 100: [113,12,2]
* 254: [153,153,153]
* 255: [0,0,0]
  1. Built up (IBU): 2018, 10 m
* 0: [240,240,240]
* 1: [255,178,0]
* 254: [153,153,153]
* 255: [0,0,0]
  1. Degree of Imperviousness (IMD): 2018, 100 m
* 0: [240,240,240]
* 1: [255,237,195]
* 50: [175,74,51]
* 100: [113,12,2]
* 254: [153,153,153]
* 255: [0,0,0]
  1. Share of Built up (SBU): 2018, 100 m
* 0: [240,240,240]
* 1: [251,255,214]
* 30: [255,221,0]
* 70: [255,178,0]
* 100: [219,106,6]
* 254: [153,153,153]
* 255: [0,0,0]
  1. Degree of Imperviousness Change (IMC): 2015 – 2018, 20 m
* -100: [3,102,0]
* -10: [12,114,0]
* -50: [63,178,0]
* 0: [178,178,178]
* 50: [255,191,0]
* 100: [255,0,0]
* 201: [240,240,240]
* 254: [168,0,229]
* 255: [0,0,0]
  1. Degree of Imperviousness Change (IMC): 2015 – 2018, 100 m
* -100: [3,102,0]
* -10: [12,114,0]
* -50: [63,178,0]
* 0: [178,178,178]
* 50: [255,191,0]
* 100: [255,0,0]
* 201: [240,240,240]
* 254: [168,0,229]
* 255: [0,0,0]
  1. Degree of Imperviousness Change Classified (IMCC): 2015 – 2018, 20 m
* 0: [3,102,0]
* 1: [255,0,0]
* 2: [0,100,0]
* 10: [156,156,156]
* 11: [255,191,0]
* 12: [64,178,0]
* 254: [255,0,255]
* 255: [0,0,0]

raster.gap

Check description: There is no gap in the AOI.

Optional check, the check may be skipped.

Requirements:

  • there must not be a pixel with value 255 inside AOI;

vector.inspire

Check description: metadata are in accord with INSPIRE specification.

Optional check, the check may be skipped.

Requirements:

  • the tiff file must contain an INSPIRE compliant XML metadata document;

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