Abstract

A method of linearly coded profilometry is proposed. It uses linear-structure light with isosceles triangle teeth to code the object being measured and a phase-shifting technique to decode the profile. For reducing the effect of noise more than three equally spaced samples are used, and, according to the least-squares method, the general formulas of the decoded phase are given. The experimental results of a model of a head are shown.

© 1999 Optical Society of America

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  1. G.-C. Jin, S. Tang, “Automated moiré contouring of diffuse surfaces,” Opt. Eng. 28, 1211–1215 (1989).
    [CrossRef]
  2. M. Takeda, K. Mutch, “Fourier transform profilometry for the automatic measurement of 3-D object shapes,” Appl. Opt. 22, 3977–3982 (1989).
    [CrossRef]
  3. V. Srinivasan, H. C. Liu, M. Halioua, “Automated phase-measuring profilometry of 3-D diffuse objects,” Appl. Opt. 23, 3105–3108 (1984).
    [CrossRef] [PubMed]
  4. Q. Fang, S. Zheng, “Linearly coded profilometry,” Appl. Opt. 36, 2401–2407 (1997).
    [CrossRef] [PubMed]
  5. Q. Fang, “Linearly coded profilometry with a coding light that has isosceles triangle teeth: even-number-sample decoding method,” Appl. Opt. 36, 1615–1620 (1997).
    [CrossRef] [PubMed]

1997 (2)

1989 (2)

G.-C. Jin, S. Tang, “Automated moiré contouring of diffuse surfaces,” Opt. Eng. 28, 1211–1215 (1989).
[CrossRef]

M. Takeda, K. Mutch, “Fourier transform profilometry for the automatic measurement of 3-D object shapes,” Appl. Opt. 22, 3977–3982 (1989).
[CrossRef]

1984 (1)

Fang, Q.

Halioua, M.

Jin, G.-C.

G.-C. Jin, S. Tang, “Automated moiré contouring of diffuse surfaces,” Opt. Eng. 28, 1211–1215 (1989).
[CrossRef]

Liu, H. C.

Mutch, K.

Srinivasan, V.

Takeda, M.

Tang, S.

G.-C. Jin, S. Tang, “Automated moiré contouring of diffuse surfaces,” Opt. Eng. 28, 1211–1215 (1989).
[CrossRef]

Zheng, S.

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