Providing real-world and image sensor correspondence points for use in calibrating imaging systems for 3D imaging based on optical triangulation.

Abstract

To provide methods and devices for provision of a pair of real world and image sensor correspondence points for use in calibration of an imaging system for three-dimensional imaging based on light triangulation.SOLUTION: A real world point 529-1 is provided as a first virtual intersection between a first real world line 527a and a second real world line 527b. An image sensor point 554-1 is provided as a second virtual intersection between a first image line and a second image line. A first image by the imaging system comprises captured light that images the first real world line; and a second image by the imaging system comprises captured light that images the second real world line. The first image line 552a corresponds to positions of intensity peaks of the captured light in the first image; and the second image line 552b corresponds to positions of intensity peaks of the captured light in the second image.SELECTED DRAWING: Figure 5G