Abstract
With the appearance of low-cost and high-resolution consumer-grade digital cameras, a practical three-dimensional (3D) measurement system using a consumer-grade digital camera is greatly anticipated in various fields. In these circumstances, the authors have been concentrating on developing a practical 3D measurement system that includes photogrammetric software called the Image Based Integrated Measurement (IBIM) system. The IBIM system device consists of full/half-mirrors, a consumer-grade digital camera, and a laser distance meter. The most remarkable advantage of the system is its ability to calculate exterior orientation parameters, interior orientation parameters, and pseudo ground control points (GCPs) without using scale bars or the GCPs in the object field. The system has the ability to calibrate multiple cameras of different resolutions using a camera-variant parameter set. However, there remains one issue that needs to be resolved before this system can be effectively used, namely, improvement of the system which does not depend on the IBIM system device. With this motive, a practical photogrammetry method using a consumer-grade digital cameras and a hand-held laser distance meter is proposed. To test our proposed method, the bundle of distances from the center camera position to the feature points in the object field were measured individually at archaeological sites in Greece. In order to evaluate the possibility and practicability of the proposed photogrammetry method, this paper describes and evaluates the camera calibration techniques using images from multiple cameras of different resolutions and a bundle of distances.
Highlights
With the appearance of low-cost and high-resolution consumer-grade digital cameras, a practical 3D measurement using a consumer-grade digital camera is greatly anticipated in various fields
Image Based Integrated Measurement (IBIM) system has been improved through the triplet method, which uses multiple cameras of different resolutions based on the camera-variant parameter set [7]
The camera calibration techniques and performance evaluation of the generalized IBIM (G-IBIM) system were investigated in this paper
Summary
With the appearance of low-cost and high-resolution consumer-grade digital cameras, a practical 3D measurement using a consumer-grade digital camera is greatly anticipated in various fields. In order to obtain accurate object coordinates, almost all software require GCPs, scale bars ( known as reference bars), or interior orientation parameter sets acquired beforehand. These restrictions are undesirable, and they should be removed in ideal practical photogrammetry using consumer-grade digital cameras. The IBIM system fully achieves non-contact 3D measurement using a few images and distances from the IBIM system device to the pseudo-GCPs, which are feature points on the object field. In order to realize practical photogrammetry, the IBIM system device as special equipment should be removed With this motive, camera calibration techniques based on the camera-variant parameter set were investigated using consumer-grade digital cameras and a hand-held laser distance meter
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