FIX: _wavelet_threshold: do not denoise the approximation coefficients
FIX: _wavelet_threshold: do not denoise the approximation coefficients

paalge/scikit-image,vighneshbirodkar/scikit-image,vighneshbirodkar/scikit-image,paalge/scikit-image,vighneshbirodkar/scikit-image,paalge/scikit-image