Device and method for motion-compensated recursive filtering...

Details Device and method for motion-compensated recursive filtering... Device and method for motion-compensated recursive filtering...

2005-09-13

2005-09-13

Rao, Andy (Department: 2613)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240260

Reexamination Certificate

active

06944230

ABSTRACT:
The present invention relates to a device and a process for motion-compensated recursive filtering and a corresponding coding system. The device comprises in particular a blockwise motion estimation module [(2)], means [(3)] for determining a recursivity noise level (σrec), a module (4) for calculating a prediction error (ε), a module [(5)] for calculating a recursivity coefficient (α) as a function of the recursivity noise level and of the prediction error, means [(6)] for calculating a motion-compensated image and means of filtering [(7, 8)] producing a weighting, by the recursivity coefficient, of the current input image and of a filtered and motion-compensated image stored previously. The device also comprises means [(3)] for determining an immobility noise level (σimm), and an assembly [(11, 12)] for processing zones constituting partitions of the blocks employed for the motion estimation, zeroing the motion vectors (d) associated with the zones in which the FDs are below a threshold dependent on the immobility noise level.

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V. Ruiz et al., “An 8×8-Block Based Motion Estimation Using Kalman Filter,”Oct. 1997, p. 140-143, IEEE, Greece.

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