SquareCapture

Automatically recognizes a square and converts it into frontal images/movies.
It is convenient for capturing documents, whiteboards, monitor screens, etc.
It's a so-called scanner app, but it also supports video shooting.

- How to use
1. Point the camera at the square object you want to capture
2. Press the "Lock" button when a round marker appears at the corner of the target
3. Since the marker turns yellow, press the "Capture" button in that state to shoot
(If the marker is misaligned, correct it by dragging)