Method and device for determination of motion vectors that are coordinated with regions of an image

US7933332B2 · kind B2 · utility

Assignee

• Trident Microsystems (Far East) Ltd. · KY

Inventors

• Markus Schu · Erding, DE
• Christian Tuschen · Munich, DE
• Marko Hahn · Neubiberg, DE
• Guido Kohlmeyer · Dortmund, DE

Key dates

• Filing date: Apr 7, 2005
• Grant date: Apr 26, 2011
• Expiry date: Dec 16, 2028

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2207/10016
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

In a method and device for determining motion vectors that are each coordinated with individual regions of an image, the image is divided into a number of first main blocks, making use of a first block raster, and a first estimation process is performed to provide each first block with a motion vector. The image is also divided into a number of second main blocks, making use of a second block raster, whose position is displaced relative to or offset from the first block raster, for example in the horizontal and vertical directions, and a second estimation process is performed to provide each second main block with a motion vector. A number of subblocks are formed, each subblock being formed by an overlap region between one of the main blocks of the first raster and certain ones of the second main blocks of the second raster. A motion vector for each subblock is generated, this motion vector depending on the motion vectors of the main blocks and being coordinated with the particular subblock.