ERRORW_RANDOM
Operator norm estimate for |F*wF I- I^2/I|^2 using random image. here F is the operator PPFT.
Contents
Description
op = ERRORW_RANDOM(N,R,BASISCHOICE) return the frobenious norm estimate
of the operator (F^*wF-Id) applying to a image I, i.e.,
op = \sum_{k=1}^{nTotal} ||(F^*wF-Id)I_k||^2/||I_k||^2.
I_k is the random image from routine RAND.Examples
nTotal = 5; N = 32;
R = 2; Choice = 1;
op = errorW_random(N,R,Choice,nTotal)
op =
0.0149
See also
ERRORW, SAVEW, LOADW, FINDWEIGHTW, WEIGHTGENERATE, PPFT, ADJPPFT, BASISFUNCTION, EIGMAXMINFTCF.
Copyright
Copyright (C) 2011. Xiaosheng Zhuang, University of Osnabrueck