Homography estimation for camera document scanning applications

Rigoberto Juarez-Salazar; Victor H. Diaz-Ramirez

doi:10.1117/12.2322001

7 September 2018 Homography estimation for camera document scanning applications

Rigoberto Juarez-Salazar, Victor H. Diaz-Ramirez

Proceedings Volume 10751, Optics and Photonics for Information Processing XII; 107510H (2018) https://doi.org/10.1117/12.2322001
Event: SPIE Optical Engineering + Applications, 2018, San Diego, California, United States

Abstract

Rectangular shapes in observed scenes are transformed to quadrilaterals in resulting images due to perspective distortion. If the aspect ratio of the original rectangle is known, the associated homography can be computed directly and used for perspective correction. However, in camera document scanning applications, the aspect ratio of the imaged rectangle is unknown. In this work, a homography estimation method appropriate for document scanning applications is given. This method does not require a priori knowledge of the aspect ratio of the imaged rectangle nor a calibrated camera. The computational implementation is evaluated experimentally.

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Citation Download Citation

Rigoberto Juarez-Salazar and Victor H. Diaz-Ramirez "Homography estimation for camera document scanning applications", Proc. SPIE 10751, Optics and Photonics for Information Processing XII, 107510H (7 September 2018); https://doi.org/10.1117/12.2322001

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