Development of Hybrid Digital Camera for Digital Archives of Historical Structures

A convenient 3D measurement using amateur digital camera is enormously expected from various fields according to appearance of the high resolution amateur cameras since pixel numbers of amateur digital cameras are amazingly increasing by modern semiconductor and digital technology. In these circumstances, software for low-cost digital photogrammery “3DiVision” was designed to perform convenient 3D measurement using 3 mega amateur digital cameras. However, there are issues for efficient digital photogrammetry using amateur digital camera. These problems are distance measurement and previous interior orientation, and these restrict conditions should be removed for ideal convenient photogrammetry. With this motive, Hybrid Digital Camera system was developed by the authors consisting of 5 parts: mirrors, amateur digital camera, laser profiler, personal compute and monitor. The most remarkable point of this system is its ability to calculate orientation parameters without scale distance or GCP on an object field. This paper describes a Hybrid Digital Camera system, and investigates an adaptability of this system to 3D modeling of historical structures in architecture and archaeology.