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by Narasimha Kaulgud, Jayahsree Karlekar, U. B. Desai
http://www.ee.iitb.ac.in/~icvgip/PAPERS/172.pdf
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Abstract:
In this paper we propose a new method for video resolution enhancement from compressed video data. Novelty of the approach is that resolution enhancement is done by interpolating the motion vectors. Proposed method works very well for different compression methodologies. We first discuss zooming, when the video is compressed using the Discrete Cosine Transform Domain (DCT). Next we use the Discrete Wavelet Transform (DWT) based video compression proposed in [7] and develop a zooming technique in the DWT domain. Simulation results are presented to illustrate the efficacy of the proposed method. Finally, we show that motion vector interpolation can also be used from video frame interpolation.
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