Patent · US Expired

Method of making a hierarchical estimate of image motion in a television signal

US5635994A · kind A · utility

18Cited by

7References

13Claims

0Family size

Assignee

Deutsche Thomson-Brandt GmbH · DE

Inventors

Michael Drexler · Gehrden, DE
Heinz-Werner Keesen · Hannöver, DE
Carsten Herpel · Bad Driburg, DE

Key dates

Filing date	Dec 7, 1994
Grant date	Jun 3, 1997
Priority date	—
Expiry date	Dec 7, 2014

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/523
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A method of making a hierarchical estimate of image motion for a television signal. A television signal video image is divided into blocks of fixed size, and motion relative to a second video image is determined for each block. Mutually non-overlapping pixel blocks are produced at a lower, more finely resolved hierarchical level. The center points of these blocks are used as the points for an analysis at a level that is located higher in the hierarchy. Preferably, points which lie between image lines and which do not represent real picture elements in the line raster, are investigated in the mutually non-overlapping blocks.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.