Searched refs:second_derivative (Results 1 – 1 of 1) sorted by relevance
1505 *second_derivative, in OptimalTau() local1547 second_derivative=(double *) AcquireQuantumMemory(256, in OptimalTau()1548 sizeof(*second_derivative)); in OptimalTau()1550 (second_derivative == (double *) NULL)) in OptimalTau()1559 DerivativeHistogram(derivative,second_derivative); in OptimalTau()1560 ZeroCrossHistogram(second_derivative,smooth_threshold, in OptimalTau()1571 DerivativeHistogram(derivative,second_derivative); in OptimalTau()1572 ZeroCrossHistogram(second_derivative,smooth_threshold, in OptimalTau()1576 second_derivative=(double *) in OptimalTau()1577 RelinquishMagickMemory(second_derivative); in OptimalTau()[all …]