Post-processor of motion vectors for field interpolation

Details Post-processor of motion vectors for field interpolation Post-processor of motion vectors for field interpolation

1995-07-05

1997-12-16

Zimmerman, Mark K.

Television

Special applications

Simulator

348699, G06T 700

Patent

active

056994990

ABSTRACT:
It is sought to provide a motion vector post-processor, which can improve motion vectors of blocks containing boundaries of objects in different movements to provide as visually satisfactory interpolated field quality as possible. Motion vectors generated in a motion estimator are stored in a memory, and their magnitudes are calculated in a magnitude calculator. Magnitude data is fed to an order statistics filter. The filter detects the serial number of a motion vector (for instance third motion vector) less than a magnitude at the center among a plurality of (for instance nine) input motion vectors and outputs corresponding serial number data to the memory. The memory outputs the vector corresponding to the input serial number data to a field interpolator. According to the invention, it is possible to provide a motion vector of an area containing small movement as motion vector of a block containing mixed movements.

REFERENCES:
patent: 5148269 (1992-09-01), de Haan et al.
patent: 5157732 (1992-10-01), Ishii et al.
patent: 5379074 (1995-01-01), Hwang
patent: 5428397 (1995-06-01), Lee et al.
patent: 5473384 (1995-12-01), Jayant et al.
patent: 5500904 (1996-03-01), Markandey et al.
patent: 5557341 (1996-09-01), Weiss et al.
"Vector Median Filters", Proceeding of the IEEE, vol. 78, No. 4, Apr. 1990, pp.678-689.

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