Update AGBD.py

AGBD.py

@@ -221,7 +221,7 @@ def denormalize_bands(bands_data, norm_values, order, norm_strat='pct'):
 
     return bands_data
 
-
+"""
 def decode_lc(encoded_lc, mode='cos'):
     # Encode the LC classes with sin/cosine values and scale the data to [0,1]
     if mode == 'cos':
@@ -231,6 +231,26 @@ def decode_lc(encoded_lc, mode='cos'):
     else:
         raise ValueError(f'Mode `{mode}` is not valid.')
     return lc
+"""
+
+def recover_lc_map(lc_cos, lc_sin):
+    
+    # Convert lc_cos and lc_sin back to the range of the original sin and cos values
+    lc_cos = 2 * lc_cos - 1
+    lc_sin = 2 * lc_sin - 1
+    
+    # Calculate the angles using arccos and arcsin
+    theta_cos = np.arccos(lc_cos)
+    sin_theta_cos = np.sin(theta_cos)
+    check = np.isclose(sin_theta_cos, lc_sin, atol = 1e-8)
+    theta = np.where(check, theta_cos, 2 * np.pi - theta_cos)
+    
+    # Convert the angle theta back to lc_map
+    lc_map = np.round((theta / (2 * np.pi)) * 100)
+    lc_map = np.where(lc_map % 10 != 0, lc_map + 100, lc_map)
+    
+    return lc_map
+
 
 class NewDataset(datasets.GeneratorBasedBuilder):
     def __init__(self, *args, additional_features=[], normalize_data=True, patch_size=15, **kwargs):
@@ -294,8 +314,10 @@ class NewDataset(datasets.GeneratorBasedBuilder):
                 patch[12:14] = denormalize_bands(patch[12:14], norm_values['ALOS_bands'], ['HH', 'HV'])
                 patch[14] = denormalize_data(patch[14], norm_values['CH']['ch'])
                 patch[15] = denormalize_data(patch[15], norm_values['CH']['std'])
-                patch[16] = decode_lc(patch[16], 'cos')
-                patch[17] = decode_lc(patch[17], 'sin')
+                lc_cos, lc_sin = patch[16], patch[17]
+                lc = recover_lc_map(lc_cos, lc_sin)
+                patch[16] = lc
+                patch[17] = lc
                 patch[18] = patch[18] * 100
                 patch[19] = denormalize_data(patch[19], norm_values['DEM'])