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Дата изменения: Fri Feb 23 12:58:13 1996 Дата индексирования: Tue Oct 2 18:03:22 2012 Кодировка: Поисковые слова: eridanus |
FILTER/WAVE I_In I_Out [Algo] [T_Filter] [Iter_Nbr] [N_Scale] [N_Sigma] [Noise]
Filters an image in the wavelet space (see section ). The used algorithm for the transform depends on the parameter Algo (see TRANSF/WAVE). T_Filter defines the type of filtering. It can take the values 1,2,3,4 (default value is 1):
where is the standard deviation of the noise at the scale j. Noise is the standard deviation of the noise in the image. If Noise equal to 0 (0 is the default value), the standard deviation is estimated automatically in the program from the histogram of the image by a 3 clipping.