FaceLandmarks show incorrect CGPoints while drawing path

[Nisha-SpaceoTech]

When I try to replace camera with static image, it detects the face landmarks but points are misplaced. Below is the code, where the points are misplaced and it draws the path on wrong position.

if let boundingBox = self.faceLandmarks.inputFaceObservations?.first?.boundingBox {
let faceBoundingBox = boundingBox.scaled(to: self.imgView.frame.size)
//different types of landmarks

                    let allpoints = observation.landmarks?.allPoints
                    self.convertPointsForFace(allpoints, faceBoundingBox)

}

Can you please help me to get correct facelandmarks points from static image?

[KeeganRen]

@Nisha-SpaceoTech you can use the func only once.
FaceARDetect/FaceARDetectIOS.h
-(BOOL) run_FaceAR:(cv::Mat)captured_image frame__:(int)frame_count fx__:(double)fx fy__:(double)fy cx__:(double)cx cy__:(double)cy;