Generating and reading optical codes with variable density to adapt for visual quality and reliability

US10896307B2 · kind B2 · utility

Assignee

• Digimarc Corporation · US

Inventors

• Ravi K. Sharma · Portland, US
• Tomas Denemark · Beaverton, US
• Brett A. Bradley · Portland, US
• Geoffrey B. Rhoads · West Linn, US
• John Stach · Tualatin, US
• Joel R. Meyer · Lake Oswego, US

Key dates

• Filing date: Jun 7, 2018
• Grant date: Jan 19, 2021
• Expiry date: Oct 3, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G06K19/06103
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

The parameters of an optical code are optimized to achieve improved signal robustness, reliability, capacity and/or visual quality. An optimization program can determine spatial density, dot distance, dot size and signal component priority to optimize robustness. An optical code generator employs these parameters to produce an optical code at the desired spatial density and robustness. The optical code is merged into a host image, such as imagery, text and graphics of a package or label, or it may be printed by itself, e.g., on an otherwise blank label or carton. A great number of other features and arrangements are also detailed.