ee.Image.spectralDistance
Computes the per-pixel spectral distance between two images. If the images are array based then only the first band of each image is used; otherwise all bands are involved in the distance computation. The two images are therefore expected to contain the same number of bands or have the same 1-dimensional array length.
| Usage | Returns | Image.spectralDistance(image2, metric) | Image |
| Argument | Type | Details | this: image1 | Image | The first image. |
image2 | Image | The second image. |
metric | String, default: "sam" | The spectral distance metric to use. One of 'sam' (spectral angle mapper), 'sid' (spectral information divergence), 'sed' (squared Euclidean distance), or 'emd' (earth movers distance). |
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Last updated 2024-07-13 UTC.
[null,null,["Last updated 2024-07-13 UTC."],[[["Computes the spectral distance between two images on a per-pixel basis, considering either a single band or all bands depending on image type."],["Images must have the same number of bands or be 1-dimensional arrays of the same length."],["Offers various spectral distance metrics including SAM, SID, SED, and EMD, with SAM as the default."],["Returns a new image representing the calculated spectral distances."],["Accessible through the `spectralDistance()` method applied to the first image, taking the second image and an optional metric as arguments."]]],[]]