Converts grayscale [0,1] mat to 3D rgb array according to hsv space. hue and saturation determines tint whereas v is given by each element of mat
NumericMatrix, [0,1].
double, [0,1], hue. Default is 0.0
double, [0,1], saturation. Default is 0.0
a NumericVector with 3 dimensions attribute i.e. a 3D array - 1st Dim is matrix rows count, - 2nd Dim is matrix cols count, - 3rd Dim is RGB