Expo image manipulator crop - according to facedetector values

How to / Third Party Tooling
1

Please provide the following:

  1. SDK Version:40
  2. Platforms(Android/iOS/web/all):Android/Ios

Short: How can i use facedetector coordinates and sizes for image manipulator crop? I want to crop face from photo.

Explanation;

I use expo-camera with facedetection. It works so well. Face detector gives output object

 "origin": Object {
    "x": 85.00000000000006,
    "y": 231.35,
  },
  "size": Object {
    "height": 182,
    "width": 173.33333333333331,
  },
}

I can draw a box around face with that coordinates on camera preview mode it fits with screen dimensions. After taking image, output image is much larger than camere preview. So i can’t use that coordinates to crop picture. I updated facedetector coordinates and sizes with respect to image size. For example my if image width 2 times larger than screen width , i multiplied originx, and width with 2. But image manipulator crop didnt gave me desired results.
Any help would be appreciated.

2

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