TESTISOMETRY
Test Isometry of PPFT
Contents
Description
OUTPUT_TESTISOMETRY=TESTISOMETRY(N,R,CHOICE,POWERM,REPS,LFILE) Generate images I_1,...,I_REPS of size N, oversampling rate R, basis CHOICE (see basisFunction), and randomly wth normally distributed entires. Compute
M_{isom_1} = \max_{i=1...reps} norm(P^\star w PI_i-I_i,'fro')/norm(I_i,'fro'). M_{isom_2} = cond(P^\star w P); M_{isom_3} = \max_{i=1...reps}norm(CG(I_i)-I_i,'fro')/norm(I_i,'fro');Here P is the PPFT operator, w is the weighting matrix on ppgrid. see PPFT, ADJPPFT, GENERATEW.
See also
TestAlgExact, TestGeomExact, TestPackage, TestQuantization, TestRobustness, TestShearInvariance, TestSpeed, TestThresholding, TestTightness, TestTimeFreqLoc
Copyright
Copyright (C) 2011. Xiaosheng Zhuang, University of Osnabrueck