Enhancement for displaying temporally subsampled image sequences using different motion models in MC interpolation

Peter Csillag; Lilla Boroczky

doi:10.1117/12.348426

17 May 1999 Enhancement for displaying temporally subsampled image sequences using different motion models in MC interpolation

Peter Csillag, Lilla Boroczky

Author Affiliations +

Proceedings Volume 3642, High-Speed Imaging and Sequence Analysis; (1999) https://doi.org/10.1117/12.348426
Event: Electronic Imaging '99, 1999, San Jose, CA, United States

Abstract

Image sequence quality enhancement is required in many different application areas, like restoration of old, damaged films, or displaying compressed sequences in higher spatial and/or temporal resolution using MC (motion- compensated) interpolation. Image sequence interpolation is the process of increasing the frame rate of a video signal by computing intermediate images between two or more known ones. It is used in a wide range of applications from low bitrate video conferencing till standard format conversion. The pixel values of the unknown frames have to be interpolated along the motion trajectories. First, correspondence must be established between the known images using a motion estimation algorithm, than this motion information is used to compute the interpolated image (or images) between the known ones. Interpolation of pixel values is done by a linear interpolation filter along the calculated motion trajectories. In our contribution experimental comparison of different motion models is given using artificial image sequences. The sequences have been generated by moving natural images along different trajectories. In the experiments presented in this paper the motion parameters are calculated from the known trajectories, and these parameters are passed to the interpolation algorithm. In other experiments, using real- life sequences, motion estimation should be used. It is in our case a multiresolution pel-recursive motion estimation algorithm.

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Peter Csillag and Lilla Boroczky "Enhancement for displaying temporally subsampled image sequences using different motion models in MC interpolation", Proc. SPIE 3642, High-Speed Imaging and Sequence Analysis, (17 May 1999); https://doi.org/10.1117/12.348426

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KEYWORDS

Motion models

Motion estimation

Image enhancement

Affine motion model

Image quality

3D modeling

Image processing

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