Fundamentals of videogrammetry

Journal/Book: Hum Movement Sci. 1997; 16: PO Box 211, 1000 AE Amsterdam, Netherlands. Elsevier Science BV. 155-187.

Abstract: With the advent of inexpensive and powerful CCD- ('video-') cameras and associated image data transfer and processing hardware novel measurement systems, based on these components, are of great potential for human movement recording. This contribution gives an introduction to the fundamentals of 'videogrammetry', a measurement technique based on the principles of 'photogrammetry'. We will discuss the concept of the multi-image (more than two CCD-frames) measurement mode, the bundle adjustment with its variants for point positioning, orientation and calibration, the notions of precision and reliability, system aspects including some details on CCD-cameras and image data transfer, calibration and self-calibration, algorithms for high precision image measurements, and finally show a typical application example. Besides being a highly automated measurement technique, videogrammetry provides for high accuracy (a relative accuracy of 1 : 10 000 can be reached in trajectory determination with standard components) and truly real-time data processing capabilities. In addition, a great number of particles (> 100) can be measured and tracked simultaneously, and surfaces and their deformation can be determined. Therefore, the videogrammetric technique is of great interest for applications in biomechanics, sport, animation, and virtual reality generation and control.

Note: Article Gruen A, Eth Zurich, Inst Geodesy & Photogrammetry, Eth Hoenggerberg, CH-8093 Zurich, SWITZERLAND

Keyword(s): videogrammetry; bundle adjustment; calibration; CCD-cameras; image measurement

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Fundamentals of videogrammetry - A review