Method and apparatus for inputting three-dimensional data
US6556307B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1999 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | Sep 10, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/2518
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for inputting three-dimensional data are provided, in which operation for obtaining incident angles is not required and accuracy of three-dimensional data can be improved. The method includes steps of irradiating a reference light beam from a first starting point A to an object by a first angle &thgr;A, irradiating a reference light beam from a second starting point B separated from the first starting point A to the object by a second angle &thgr;B, moving the first and the second starting points A, B in one direction so as to perform sub scanning of an imaginary plane VS, detecting time points TA, TB when the reference light beam reflected by the object Q passes each sampling section of the imaginary plane; and calculating the position of the object for each sampling section in accordance with positions of the first and second starting points A, B in each of the detected time points TA, TB and first and second angles &thgr;A, &thgr;B.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.