WORKSHOP PAPER
A Half-Pulse 2-Tap Indirect Time-of-Flight Ranging Method with Sub-Frame Operation for Depth Precision Enhancement and Motion Artifact Suppression
Chia-Chi Kuo1,2, Rihito Kuroda1,2
1Graduate School of Engineering, Tohoku University, 6-6-05, Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi, Japan 980-8579
2New Industry Creation Hatchery Center, Tohoku University,

Abstract

This paper presents a new 2-tap indirect time-of-flight (iToF) ranging method using half-pulse (HP) modulation and sub-frame 4-phase sampling. The proposed operation and derived theoretical depth noise equations were verified by the experiments, which achieve >25% and >29% depth precision enhancement for 0.4-3 m range with proposed HP1 and HP2 method, respectively. The motion artifact suppression is also demonstrated using sub-frame operation that provides clear depth images for a scene with a moving object.
Publisher: IISS (Int. Image Sensors Society)
Year: 2023
Workshop: IISW
URL: https://doi.org/10.60928/ccsi-uy9e
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Keywords

3-D imaging, time-of-flight, motion artifact suppression,

References

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