IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
LETTER
Real-time geometrical correction of video image using FPGA
Zmago JerebJanez Diaci
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2010 Volume 7 Issue 5 Pages 346-351

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Abstract

We present a method, implementable on a field programmable gate array (FPGA), which allows real-time correction of video image distorted by the projection on a warped screen. The method is based on projecting a reference image, consisted of a mesh of reference points, onto the screen. The projected image is then acquired using a digital camera and compared to the original one to determine the parameters of the corrective transformation. The transformation uses a backward mapping algorithm and an anti-aliasing filter. Experimental results demonstrate that the presented FPGA implementation can significantly reduce geometrical distortion.

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© 2010 by The Institute of Electronics, Information and Communication Engineers
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