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Real-time interpolation using bilateral filter for image zoom or video up-scaling/transcoding

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2 Author(s)
Kwok-Wai Hung ; Dept. of Electronic and Information Engineering, Hong Kong Polytechnic University, Hong Kong ; Wan-Chi Siu

In this paper, we propose a novel image interpolation technique using the small-kernel bilateral filter. The range distance of the bilateral filter is estimated using a novel maximum a posterior (MAP) estimation, in order to consider both the diagonal and vertical-horizontal correlations in image. The proposed method requires a few arithmetic operations, such that it is suitable for real time image zoom, video up-scaling and video transcoding applications in HDTV systems. Subjective evaluation shows that the proposed approach outperforms the conventional method in terms of edge sharpness and edge smoothness.

Published in:

2012 IEEE International Conference on Consumer Electronics (ICCE)

Date of Conference:

13-16 Jan. 2012