US 2006/0133506 A1 · Method and system for fast implementation of subpixel interpolation

Abstract

A subpixel interpolator includes an input memory capable of storing video information formed from full pixels. The subpixel interpolator also includes at least one interpolation unit capable of performing subpixel interpolation to generate half-pixels and quarter-pixels in parallel. Multiple half-pixels and multiple quarter-pixels are generated concurrently during the subpixel interpolation. In addition, the subpixel interpolator includes an output memory capable of storing at least some of the full pixels, half-pixels, and quarter-pixels. In some embodiments, the at least one interpolation unit includes a horizontal half-pixel interpolation unit, two vertical half-pixel interpolation units, and a quarter-pixel interpolation unit, all of which may operate in parallel. In particular embodiments, the interpolation units are formed from adders and shifters and do not include any multipliers.

Claims20

Dependent claims

A method, comprising:

receiving video information comprising full pixels;
performing subpixel interpolation to generate half-pixels and quarter-pixels in parallel, wherein multiple half-pixels and multiple quarter-pixels are generated concurrently during the subpixel interpolation;
and
performing motion compensation using at least some of the half-pixels and quarter-pixels.

1 more element

A subpixel interpolator, comprising:

an input memory capable of storing video information comprising full pixels;
at least one interpolation unit capable of performing subpixel interpolation to generate half-pixels and quarter-pixels in parallel, wherein multiple half-pixels and multiple quarter-pixels are generated concurrently during the subpixel interpolation;
and
an output memory capable of storing at least some of the full pixels, half-pixels, and quarter-pixels.

1 more element

A system, comprising:

a source of video information comprising full pixels;
and
a subpixel interpolator comprising:
an input memory capable of storing the full pixels;
at least one interpolation unit capable of performing subpixel interpolation to generate half-pixels and quarter-pixels in parallel, wherein multiple half-pixels and multiple quarter-pixels are generated concurrently during the subpixel interpolation;
and
an output memory capable of storing at least some of the full pixels, half-pixels, and quarter-pixels.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

11/096,906Filed 1 Apr 2005

Priority

21 Dec 2004

Published

22 Jun 2006

Term ends

Not estimatedThe source records don’t support an estimate.

Classification4 codes

H04N 19/523
Motion estimation or motion compensation: with sub-pixel accuracy
H04N 19/43
Characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software…
H04N 19/436
Characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software…
H04N
Pictorial communication

Method and system for fast implementation of subpixel interpolation

Life of this patent

Method and system for fast implementation of subpixel interpolation

Life of this patent

Abstract

Claims20