Lines Matching refs:sigma
26 /** Maximum sigma before the implementation downscales the input image. */
76 SkScalar sigma,
87 void Compute1DGaussianKernel(float* kernel, float sigma, int radius);
89 void Compute1DLinearGaussianKernel(float* kernel, float* offset, float sigma, int radius);
93 // greater than sqrt(1/2*sigma^2) for SK_ScalarNearlyZero.
94 inline bool IsEffectivelyZeroSigma(float sigma) { return sigma <= 0.03f; }
96 inline int SigmaRadius(float sigma) {
97 return IsEffectivelyZeroSigma(sigma) ? 0 : static_cast<int>(ceilf(sigma * 3.0f));