@thuchacz Is there something salvageable from your work with Casa and Ariana on the perspective tool: see here: https://drive.google.com/drive/folders/0BwJi-u8sfkVDaEZWTzFuR1lfU1E and here: https://drive.google.com/drive/folders/0BwJi-u8sfkVDSG5oQWljdjJWblk
This has been completed - it is an annotation in progress (ann516ad20M+K_Perspective-Tool)