Projector Camera Systems for Dense High-Speed 3D Measurement

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K12056
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Perceptual information processing
• Research Institution: Tohoku University
• Principal Investigator: KAGAMI Shingo 東北大学, 情報科学研究科, 准教授 (90361542)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: スマートセンサ情報システム / 画像、文章、音声等認識

Outline of Final Research Achievements

Methods for high-frame-rate and high-density depth measurement have been developed. The proposed methodologies are based on phase shifting of fringe patterns, to which two types of novel acceleration methods are applied. The first is an optical system to generate fringe patterns at high speed using a Digital Micromirror Device (DMD), where binary patterns emitted by DMD are spatially integrated, which enables projection of fringe patterns at the rate of the DMD pattern rate. The second is a phase unwrapping method utilizing additive mixture of multiple fringe patterns which are decomposed by a signal processing technique, which enables phase unwrapping by projecting and measuring only four patterns.

Free Research Field

計測工学