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Searched refs:second_derivative (Results 1 – 1 of 1) sorted by relevance

/external/ImageMagick/MagickCore/
Dsegment.c1505 *second_derivative, in OptimalTau() local
1547 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()
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