ee_extra.Spectral.core.tasseledCap

ee_extra.Spectral.core.tasseledCap(x)

Calculates tasseled cap brightness, wetness, and greenness components for an image or image collection.

Tasseled cap transformations are applied using coefficients published for these supported platforms:

• Sentinel-2 MSI Level 1C [1]

• Landsat 9 OLI-2 SR [2]

• Landsat 9 OLI-2 TOA [2]

• Landsat 8 OLI SR [2]

• Landsat 8 OLI TOA [2]

• Landsat 7 ETM+ TOA [3]

• Landsat 5 TM Raw DN [4]

• Landsat 4 TM Raw DN [5]

• Landsat 4 TM Surface Reflectance [6]

• MODIS NBAR [7]

Parameters:

x (Union[Image, ImageCollection]) – Image or Image Collection to calculate tasseled cap components for. Must belong to a supported platform.

Return type:

Union[Image, ImageCollection]

Returns:

Image or Image Collection with the tasseled cap components as new bands.

References

[1]

Shi, T., & Xu, H. (2019). Derivation of Tasseled Cap Transformation Coefficients for Sentinel-2 MSI At-Sensor Reflectance Data. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 1–11. doi:10.1109/jstars.2019.2938388

[2] (1,2,3,4)

Zhai, Y., Roy, D.P., Martins, V.S., Zhang, H.K., Yan, L., Li, Z. 2022. Conterminous United States Landsat-8 top of atmosphere and surface reflectance tasseled cap transformation coefficeints. Remote Sensing of Environment, 274(2022). doi:10.1016/j.rse.2022.112992

[3]

Huang, C., Wylie, B., Yang, L., Homer, C. and Zylstra, G., 2002. Derivation of a tasselled cap transformation based on Landsat 7 at-satellite reflectance. International journal of remote sensing, 23(8), pp.1741-1748.

[4]

Crist, E.P., Laurin, R. and Cicone, R.C., 1986, September. Vegetation and soils information contained in transformed Thematic Mapper data. In Proceedings of IGARSS’86 symposium (pp. 1465-1470). Paris: European Space Agency Publications Division.

[5]

Crist, E.P. and Cicone, R.C., 1984. A physically-based transformation of Thematic Mapper data—The TM Tasseled Cap. IEEE Transactions on Geoscience and Remote sensing, (3), pp.256-263.

[6]

Crist, E.P., 1985. A TM tasseled cap equivalent transformation for reflectance factor data. Remote sensing of Environment, 17(3), pp.301-306.

[7]

Lobser, S.E. and Cohen, W.B., 2007. MODIS tasselled cap: land cover characteristics expressed through transformed MODIS data. International Journal of Remote Sensing, 28(22), pp.5079-5101.

Examples

>>> import ee
>>> from ee_extra.Spectral.core import tasseledCap
>>> ee.Initialize()
>>> img = ee.Image("LANDSAT/LT05/C01/T1/LT05_044034_20081011")
>>> img = tasseledCap(img)