# DetailIllusion by mf
#
# Tries to create the illusion of detail by adding noise
# near edges.
#

function DetailIllusion(clip input, int "strength", bool "reverse", int "level", \
bool "denoise") {

strength = Default(strength, 255)   # absolute strength, 0-255
reverse  = Default(reverse, false)  # noise on flat areas
level	 = Default(level, 20)	    # noise level

noisemask = input.EdgeMask(0, "sobel").Inflate().Inflate().Blur(1.0) .\
Levels(0, 1.0, 35, 0, 255).GreyScale().Blur(1.0).Blur(1.0).Blur(1.0).ConvertToRGB32()  #

noisemaskinverse = noisemask.Levels(0, 1.0, 255, 255, 0)

inputyuy = input.ConvertToYUY2()

noise = inputyuy.AddNoise(yv=level, uv=0, vv=0, detail_threshold=0).ConvertToYV12() #.Blur(0.4)
#soft = input.BilinearResize(width, height)

noisergb = noise.ConvertToRGB32()
inputrgb = input.ConvertToRGB32()

maskednoise = Mask(noisergb, reverse ? noisemaskinverse : noisemask)
edgednoise = Layer(inputrgb, maskednoise, "add", strength)

edgednoiseyv12 = noise.MergeLuma(edgednoise.ConvertToYV12())

return edgednoiseyv12

}