SigmaMultiplicativeGaussian 2661 magick/accelerate-private.h OPENCL_DEFINE(SigmaMultiplicativeGaussian, (attenuate*0.5f)) SigmaMultiplicativeGaussian 2877 magick/accelerate-private.h noise=(float) (pixel+pixel*SigmaMultiplicativeGaussian*sigma* SigmaMultiplicativeGaussian 1565 magick/gem.c noise=(double) (pixel+pixel*SigmaMultiplicativeGaussian*sigma*