Method and apparatus for determining true motion vectors for sel

Details Method and apparatus for determining true motion vectors for sel Method and apparatus for determining true motion vectors for sel

1995-05-22

1996-12-03

Chin, Tommy P.

Television

Image signal processing circuitry specific to television

Motion vector generation

348416, 348413, 348407, H04N 712

Patent

active

055813089

ABSTRACT:
An inventive apparatus determines true motion vectors between a current and its previous frames for feature points selected from the previous frame wherein a selected feature point is surrounded by its neighboring four feature points to form a previous rhombus having a set of four triangles based on the selected feature point. A motion vector displacement generator gives a predetermined N number of displacements to an initial motion vector for its corresponding feature points to thereby produce a subset of N candidate motion vectors and a motion prediction block provides a current rhombus corresponding to the previous rhombus by the initial motion vectors, wherein the current rhombus has N sets of four triangles due to the N candidate motion vectors. A true motion vector is selected from the subset of N candidate motion vectors, which entails a minimum error value between the predicted pixel values for each triangle set in the current rhombus and their respective corresponding current pixel values from the previous frame.

REFERENCES:
patent: 5048112 (1991-09-01), Alves et al.
patent: 5247586 (1993-09-01), Gobert et al.
patent: 5295201 (1994-03-01), Yokohama
patent: 5398068 (1995-03-01), Liu et al.
patent: 5453800 (1995-09-01), Kondo et al.
patent: 5479218 (1995-12-01), Etoh

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