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⚡️ Speed up function normalize_temp_matrix by 41% #25

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⚡️ Speed up function normalize_temp_matrix by 41% #25

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7 changes: 4 additions & 3 deletions opendm/thermal_tools/thermal_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -109,9 +109,10 @@ def parse_from_exif_str(temp_str):

def normalize_temp_matrix(thermal_np):
"""Normalize a temperature matrix to the 0-255 uint8 image range."""
num = thermal_np - np.amin(thermal_np)
den = np.amax(thermal_np) - np.amin(thermal_np)
thermal_np = num / den
min_val = np.amin(thermal_np)
max_val = np.amax(thermal_np)
den = max_val - min_val
thermal_np = (thermal_np - min_val) / den
return thermal_np

def clip_temp_to_roi(thermal_np, thermal_roi_values):
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