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Update true_color_reproduction composite to work with Met-12 #3406

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Update true_color_reproduction composite to work with Met-12 #3406

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969ac23
Update `true_color_reproduction` composite to reflect MTG-I1 becoming…
simonrp84 May 27, 2026
6312c20
Remove accidentally committed files
simonrp84 May 27, 2026
801c002
Update true color reproduction code to use TSIS-1 v2 solar spectrum. …
simonrp84 May 27, 2026
f79ec22
Update tests for true color reproduction
simonrp84 May 28, 2026
7893752
Update true color reproduction spaces
simonrp84 May 28, 2026
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73 changes: 45 additions & 28 deletions satpy/enhancements/ahi.py
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Original file line number Diff line number Diff line change
Expand Up @@ -54,34 +54,51 @@ def _jma_true_color_reproduction(img_data, platform=None):

"""
# Conversion matrix dictionaries specifying sensor and platform.
ccm_dict = {"himawari-8": np.array([[1.1629, 0.1539, -0.2175],
[-0.0252, 0.8725, 0.1300],
[-0.0204, -0.1100, 1.0633]]),

"himawari-9": np.array([[1.1619, 0.1542, -0.2168],
[-0.0271, 0.8749, 0.1295],
[-0.0202, -0.1103, 1.0634]]),

"goes-16": np.array([[1.1425, 0.1819, -0.2250],
[-0.0951, 0.9363, 0.1360],
[-0.0113, -0.1179, 1.0621]]),
"goes-17": np.array([[1.1437, 0.1818, -0.2262],
[-0.0952, 0.9354, 0.1371],
[-0.0113, -0.1178, 1.0620]]),
"goes-18": np.array([[1.1629, 0.1539, -0.2175],
[-0.0252, 0.8725, 0.1300],
[-0.0204, -0.1100, 1.0633]]),
"goes-19": np.array([[0.9481, 0.3706, -0.2194],
[-0.0150, 0.8605, 0.1317],
[-0.0174, -0.1009, 1.0512]]),

"mtg-i1": np.array([[0.9007, 0.2086, -0.0100],
[-0.0475, 1.0662, -0.0414],
[-0.0123, -0.1342, 1.0794]]),

"geo-kompsat-2a": np.array([[1.1661, 0.1489, -0.2157],
[-0.0255, 0.8745, 0.1282],
[-0.0205, -0.1103, 1.0637]]),
ccm_dict = {"himawari-8": np.array([[1.1495, 0.1534, -0.2203],
[-0.0245, 0.8741, 0.1321],
[-0.0203, -0.1102, 1.0685]]),

"himawari-9": np.array([[1.1485, 0.1537, -0.2196],
[-0.0264, 0.8765, 0.1316],
[-0.0200, -0.1105, 1.0686]]),

"goes-16": np.array([[1.1293, 0.1810, -0.2277],
[-0.0940, 0.9377, 0.1380],
[-0.0111, -0.1180, 1.0673]]),
"goes-17": np.array([[1.1306, 0.1809, -0.2289],
[-0.0941, 0.9367, 0.1391],
[-0.0112, -0.1179, 1.0672]]),
"goes-18": np.array([[1.1328, 0.1815, -0.2317],
[-0.0943, 0.9342, 0.1417],
[-0.0112, -0.1176, 1.0669]]),
"goes-19": np.array([[1.1253, 0.1818, -0.2244],
[-0.0937, 0.9403, 0.1351],
[-0.0111, -0.1184, 1.0676]]),

"meteosat-12": np.array([[0.8860, 0.2081, -0.0115],
[-0.0468, 1.0691, -0.0406],
[-0.0121, -0.1345, 1.0847]]),

"geo-kompsat-2a": np.array([[1.1527, 0.1484, -0.2185],
[-0.0248, 0.8762, 0.1303],
[-0.0203, -0.1105, 1.0689]]),

"sentinel-3a": np.array([[2.3828, 0.0046, -1.3048],
[-0.2172, 0.0342, 1.1647],
[-0.0211, -0.0043, 0.9636]]),
"sentinel-3b": np.array([[2.3718, 0.0058, -1.2950],
[-0.2161, 0.0434, 1.1544],
[-0.0211, -0.0055, 0.9646]]),

"sentinel-2a": np.array([[2.0301, 0.0231, -0.9706],
[-0.1801, 0.1302, 1.0316],
[-0.0186, -0.0164, 0.9732]]),
"sentinel-2b": np.array([[1.9942, 0.0289, -0.9405],
[-0.1774, 0.1617, 0.9974],
[-0.0182, -0.0204, 0.9767]]),
"sentinel-2c": np.array([[1.7759, 0.0666, -0.7598],
[-0.1589, 0.3731, 0.7675],
[-0.0161, -0.0470, 1.0013]]),
}

# A conversion matrix, sensor name and platform name is required
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12 changes: 6 additions & 6 deletions satpy/tests/enhancement_tests/test_ahi.py
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Original file line number Diff line number Diff line change
Expand Up @@ -39,14 +39,14 @@ def test_jma_true_color_reproduction(self):

from satpy.enhancements.ahi import jma_true_color_reproduction

expected = [[[-109.93, 10.993, 131.916, 252.839, 373.762],
[494.685, 615.608, 736.531, 857.454, 978.377]],
expected = [[[-108.260, 10.826, 129.912, 248.998, 368.084],
[487.170, 606.256, 725.342, 844.428, 963.514]],

[[-97.73, 9.773, 117.276, 224.779, 332.282],
[439.785, 547.288, 654.791, 762.294, 869.797]],
[[ -98.170, 9.817, 117.804, 225.791, 333.778],
[441.765, 549.752, 657.739, 765.726, 873.713]],

[[-93.29, 9.329, 111.948, 214.567, 317.186],
[419.805, 522.424, 625.043, 727.662, 830.281]]]
[[-93.800, 9.380, 112.560, 215.740, 318.920],
[422.100, 525.280, 628.460, 731.640, 834.820]]]

img = XRImage(self.rgb)
jma_true_color_reproduction(img)
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