Body Rect from AVCaptureMetadataOutput

We are using AVCaptureMetadataOutput to detect face and body rects. Face rect is shown in green and body rect is shown in blue. We would like to get body rect that encompasses human body, as shown in red box. This body rect is absolute in a sense that it will include hands, feet, arms etc.

Body Rect from AVCaptureMetadataOutput
 
 
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