Camera Calibration for Image Based Integrated Measurement System using Distances
Tatsuya OHDAKE, Hirofumi CHIKATSU
A convenient 3D measurement using amateur digital cameras is enormously expected in various fields with appearance of the low coat and high-resolution amateur digital cameras. In these circumstances, software for digital photogrammetry “3DiVision” was designed to perform convenient 3D measurement using amateur digital cameras. However, there are still problems for efficient digital photogrammetry. These problems include distance measurement for absolute orientation and interior orientation which should be performed beforehand, and these restrictions should be removed for ideal convenient photogrammetry using amateur digital cameras.
With this objective, Image Based Integrated Measurement (IBIM) System which consists of mirrors, amateur digital camera, and laser range finder was developed by the authors. The most remarkable point of the system is its ability to calculate both of exterior and interior orientation parameters without scale distance or Ground Control Points which have exact 3D coordinates in object field. This paper describes a camera calibration method for the IBIM System by using the distances from center of the digital camera to object field and evaluation of this camera calibration method.