Enhancement of camera-based whiteboard images

Yuan He; Jun Sun; Satoshi Naoi; Akihiro Minagawa; Yoshinobu Hotta

doi:10.1117/12.839560

18 January 2010 Enhancement of camera-based whiteboard images

Yuan He, Jun Sun, Satoshi Naoi, Akihiro Minagawa, Yoshinobu Hotta

Proceedings Volume 7534, Document Recognition and Retrieval XVII; 75340G (2010) https://doi.org/10.1117/12.839560
Event: IS&T/SPIE Electronic Imaging, 2010, San Jose, California, United States

Abstract

Quality of camera-based whiteboard images is highly related to the light environment and the writing effect of the content. Specular reflection and low contrast reduce the readability of captured whiteboard images frequently. A novel method is proposed to enhance camera-based whiteboard images in this paper. The images are enhanced by removing the highlight specular reflection to improve the visibility and emphasizing the content to improve the readability of the whiteboards. The method can be practically embedded in mobile devices with image capturing cameras.

Citation Download Citation

Yuan He, Jun Sun, Satoshi Naoi, Akihiro Minagawa, and Yoshinobu Hotta "Enhancement of camera-based whiteboard images", Proc. SPIE 7534, Document Recognition and Retrieval XVII, 75340G (18 January 2010); https://doi.org/10.1117/12.839560

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