FIX: _wavelet_threshold: do not denoise the approximation coefficients

kmader · Sep 6, 2016 · 5d9dba3 · 5d9dba3
1 parent d41f465
commit 5d9dba3
Showing 1 changed file with 1 addition and 2 deletions.
diff --git a/skimage/restoration/_denoise.py b/skimage/restoration/_denoise.py
@@ -389,8 +389,7 @@ def _wavelet_threshold(img, wavelet, threshold=None, sigma=None, mode='soft'):
 
     denoised_detail = [{key: pywt.threshold(level[key], value=threshold,
                        mode=mode) for key in level} for level in coeffs[1:]]
-    denoised_root = pywt.threshold(coeffs[0], value=threshold, mode=mode)
-    denoised_coeffs = [denoised_root] + [d for d in denoised_detail]
+    denoised_coeffs = [coeffs[0]] + [d for d in denoised_detail]
     return pywt.waverecn(denoised_coeffs, wavelet)