An OpenCV program implementing the recognition feature of the app "CamScanner". It extracts the main document object from an image and adjusts it to A4 size.
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scannerLite.cpp python port credit to scturtle Feb 19, 2014

README.md

ScannerLite

An OpenCV program implementing the recognition feature of the app "CamScanner(扫描全能王)". It extracts the main document object from an image and adjusts it to A4 size.

Chinese tutorial: 用OpenCV实现“扫描全能王”APP

Python port by @scturtle: Python Port

Input image 1:

Extraction result 1:

Input image 2:

Extraction result 2:

Input image 3:

Extraction result 3: