Depth measurement through display

US11989896B2 · kind B2 · utility

Assignee

• TRINAMIX GMBH · DE

Inventors

• Patrick Schindler · Ludwigshafen, DE
• Benjamin REIN · Ludwigshafen, DE
• Christian Bonsignore · Ludwigshafen, DE
• Michael Eberspach · Ludwigshafen, DE
• Peter Schillen · Ludwigshafen am Rhein, DE

Key dates

• Filing date: Nov 26, 2020
• Grant date: May 21, 2024
• Expiry date: Jan 29, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G06V2201/121
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

Disclosed herein is a display device includingan illumination source for projecting an illumination pattern including a plurality of illumination features on a scene;an optical sensor for determining a first image including a plurality of reflection features;a translucent display, where the illumination source and the optical sensor are placed in a direction of propagation of the illumination pattern in front of the display; andan evaluation device configured for evaluating the first image by identifying and sorting the reflection features with respect to brightness, each reflection feature including a beam profile, determining a longitudinal coordinate for each reflection feature by analyzing their beam profiles,unambiguously matching reflection features with corresponding illumination features using the longitudinal coordinate classifying a reflection feature as a real feature or a false feature, rejecting the false features, and generating a depth map for the real features using the longitudinal coordinate.