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Enhancement of camera-based whiteboard images

by: Y. He, J. Sun, S. Naoi, A. Minagawa, Y. Hotta
In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, Vol. 7534 (January 2010), doi:10.1117/12.839560  Key: citeulike:9571852

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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.


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