2D image analyzer

US10074031B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Daniel Krenzer · Ruhla, DE
• Albrecht Hess · Wertheim, DE
• András Kátai · Ilmenau, DE
• Christian WIEDE · Chemnitz, DE
• Andreas Ernst · Bollschweil, DE
• Tobias Ruf · Renningen, DE

Key dates

• Filing date: Aug 4, 2016
• Grant date: Sep 11, 2018
• Expiry date: Aug 4, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2207/30201
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A 2D image analyzer includes an image scaler, an image generator and a pattern finder. The image scaler is configured to scale an image according to a scaling factor. The image generator is configured to produce an overview image including a plurality of copies of the received and scaled image, wherein every copy is scaled about a different scaling factor. Thereby, the respective position can be calculable by an algorithm, which considers a gap between the scaled images in the overview image, a gap of the scaled image towards one or more borders of the overview image and/or other predefined conditions. The pattern finder is configured to perform a feature transformation and classification of the overview image in order to output a position at which an accordance of the searched pattern and the predetermined pattern is maximal. A post-processing unit for smoothening and correcting the position of local maxima in the classified overview image may also be provided.