Development of a video-rate range finder using dynamic threshold method for characteristic point detection

Yutaka Tanaka, Akio Gofuku, Nobuo Takeda, Isaku Nagai

Research output: Contribution to conferencePaper

Abstract

This study develops a video-rate stereo range finding circuit to obtain the depth to objects in a scene by processing video signals (R, G, B, and brightness signals) from binocular CCD cameras. The electronic circuit implements a dynamic threshold method to decrease the affection of signal noises in characteristic points detection, where a video signal from each CCD camera is compared with multiple thresholds shifting dynamically by feeding back the previous comparison result. Several object depth measurement experiments for simple indoor scenes show that the dynamic threshold method gives high acquisition and correct rates of depth data compared with those by a fixed threshold method for the video signals and a relative method for R, G, and B signals utilized in the authors' previous range finders.

Original languageEnglish
Pages932-937
Number of pages6
DOIs
Publication statusPublished - Jan 1 1999
EventProceedings of the 1999 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM '99) - Atlanta, GA, USA
Duration: Sep 19 1999Sep 23 1999

Other

OtherProceedings of the 1999 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM '99)
CityAtlanta, GA, USA
Period9/19/999/23/99

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Software
  • Computer Science Applications
  • Electrical and Electronic Engineering

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    Tanaka, Y., Gofuku, A., Takeda, N., & Nagai, I. (1999). Development of a video-rate range finder using dynamic threshold method for characteristic point detection. 932-937. Paper presented at Proceedings of the 1999 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM '99), Atlanta, GA, USA, . https://doi.org/10.1109/aim.1999.803297