Publikasjoner og ansvarsområder
Adaptive Multi-Frequency Phase Stepping for Optimal 3D Depth Reconstruction
This paper describes a 3D measurement algorithm based on Multi-Frequency Phase Stepping, using a single period pattern and a higher frequency pattern. An experimentally verified analytical expression for depth precision enables adaptive selection of the high frequency. The algorithm has several adva...
Real-time super-resolved 3D in turbid water using a fast range-gated CMOS camera
We present a range-gated camera system designed for real-time (10 Hz) 3D estimation underwater. The system uses a fast-shutter CMOS sensor (1280×1024 1280×1024 ) customized to facilitate gating with 1.67 ns (18.8 cm in water) delay steps relative to the triggering of a solid-state actively...
Structured Light Imaging under Sunlight Conditions
UTOFIA project - A new compact, cost-efficient concept for underwater range-gated imaging
UTOFIA - an underwater time-of-flight imaging acquisition system
In this article the development of a newly designed Time-of-Flight (ToF) image sensor for underwater applications is described. The sensor is developed as part of the project UTOFIA (underwater time-of-flight image acquisition) funded by the EU within the Horizon 2020 framework. This project aims to...
Design tool for TOF and SL based 3D cameras
Active illumination 3D imaging systems based on Time-of-flight (TOF) and Structured Light (SL) projection are in rapid development, and are constantly finding new areas of application. In this paper, we present a theoretical design tool that allows prediction of 3D imaging precision. Theoretical exp...
A Real-Time 3D Range Image Sensor based on a novel Tip-Tilt-Piston Micro-mirror and Dual Frequency Phase Shifting
Structured light is a robust and accurate method for 3D range imaging in which one or more light patterns are projected onto the scene and observed with an off-axis camera. Commercial sensors typically utilize DMD- or LCD-based LED projectors, which produce good results but have a number of drawback...