diff --git a/datasets/raise/extract_noise.py b/datasets/raise/extract_noise.py
index 56dd937..f7ce708 100755
--- a/datasets/raise/extract_noise.py
+++ b/datasets/raise/extract_noise.py
@@ -12,6 +12,10 @@ from utils import Color
 
 imagesFolderPath = 'rafael/arw'
 imagesFolderPathFileName = imagesFolderPath.replace('/', '_')
+# Among:
+# - `wavelet`
+# - `bilateral`
+# - `tv_chambolle`
 denoiser = 'bilateral'
 
 raiseNotFlatFields = False