Claims
- 1. A method for resolving ambiguity of a periodic pattern projected upon a surface to be measured in two or three dimensions comprising the steps of: projecting a periodic radiation pattern on a surface and obtaining a first reflected pattern; recording an image of said first reflected pattern; projecting one period of said periodic radiation pattern upon said surface and obtaining a second reflected pattern; recording an image of said second reflected pattern; identifying said one period image as a reference image; and identifying each period image sequentially in the periodic image relative to the reference image.
- 2. A method for resolving ambiguity of a periodic pattern projected upon a surface to be measured in two or three dimensions, comprising steps of: projecting a periodic radiation pattern with at least one period of a distinguishably different radiation wavelength from the remaining pattern and obtaining therefrom a periodic reflected pattern; recording an image of said reflected pattern; identifying the image of said different radiation wavelength period as a reference image; and identifying an image of each period sequentially in the periodic image relative to the reference image.
- 3. A method for resolving ambiguity within a periodic pattern projected upon a surface to be measured in two or three dimensions comprising the steps of: projecting a periodic radiation pattern on a surface, said pattern containing at least one period differing by a known length from the remaining pattern and obtaining therefrom a reflected pattern; recording an image of said reflected pattern; identifying said period differing by a known amount as a reference image; and identifying each period image sequentially in the periodic image relative to the reference image.
- 4. A method for resolving ambiguity within a periodic pattern projected upon a surface to be measured in two or three dimensions, comprising the steps of: projecting a periodic radiation pattern having a first and a last period onto a surface such that at least the first or last period is on said surface and obtaining therefrom a periodic reflected pattern; recording an image of said reflected pattern; identifying said first or last period as a reference image; and identifying each period image sequentially in the periodic image relative to the reference image.
- 5. A method for resolving ambiguity within a periodic pattern projected upon a surface to be measured in two or three dimensions, comprising the steps of: projecting a periodic radiation pattern on a surface, said pattern containing at least one aperiodic component, and obtaining therefrom a reflected pattern; recording an image of said reflected pattern; identifying said aperiodic component as a reference image; and identifying each period image sequentially in the periodic image relative to the reference image.
Parent Case Info
This is a division of application Ser. No. 577,331 filed Feb. 6, 1984.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4175862 |
DiMatteo et al. |
Nov 1979 |
|
4259589 |
DiMatteo et al. |
Mar 1981 |
|
Divisions (1)
|
Number |
Date |
Country |
Parent |
577331 |
Feb 1984 |
|