Abstract
The transmission of coded visual information over packet networks introduces fidelity problems related to the loss of frames during transmission. In this paper, a new concealment technique is presented, which aims at restoring the lost visual information by using a synthetic reconstruction of the high-frequency content of the damaged blocks. The method is funded on the theory of sketch-based encoders: for each block to be interpolated, the sketch information of the available surrounding blocks is extracted and propagated to the missing area. Then, the low-pass content is easily interpolated from the sketch.
The proposed method uses only the spatial correlation, and has been applied with good results in transmission of both video and still pictures.
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© 1999 Springer-Verlag London Limited
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Natale, F.G.B.D., Giusto, D.D., Vernazza, G. (1999). A Sketch-Based Approach for the Recovery of Transmission Errors in Coded Images. In: De Natale, F., Pupolin, S. (eds) Multimedia Communications. Springer, London. https://doi.org/10.1007/978-1-4471-0859-7_8
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DOI: https://doi.org/10.1007/978-1-4471-0859-7_8
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