We try to enhance the mammogram
images using the algorithm described in J. Fan and A. Laine, Multiscale
Contrast Enhancement and Denoising in Digital Radiographs, in Wavelets
in Medicine and Biology, editors A.Aldroubi & M. Unser, 163-189, 1996
CRC Press. We have done several experiments on both 1D and 2D data.
1D data - artificial signal, differen amount of added noise
(a) The orginal signal, (b) the
noisy signal with rho = 0.05, the parameters of the enhancing are nf =
2, Gm = 10, N = 4, (c) the enhanced and the noisy (dashed line) signals,
(d) - the enhanced and the original (dashed line) signals
(a) The orginal signal,
(b) the noisy signal with rho = 0.5, the parameters of the enhancing are
nf = 2, Gm = 10, N = 4, (c) the enhanced and the original (dotted line)
signals, (d) - the enhanced and the noisy (dotted line) signals
The subregion
The enhanced image:
The enhanced image:
of the original mammogram
NF = 2, Gm = 10, N = 1
NF = 2, Gm = 10, N = 3