in SAM2-Demo/Common/SAM2.swift [218:226]
func samTinted() -> CIImage? {
let filter = CIFilter.colorMatrix()
filter.rVector = CIVector(x: 30/255, y: 0, z: 0, w: 1)
filter.gVector = CIVector(x: 0, y: 144/255, z: 0, w: 1)
filter.bVector = CIVector(x: 0, y: 0, z: 1, w: 1)
filter.biasVector = CIVector(x: -1, y: -1, z: -1, w: 0)
filter.inputImage = self
return filter.outputImage?.cropped(to: self.extent)
}