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Proceedings Paper

ProgRes 3000: a digital color camera with a 2-D array CCD sensor and programmable resolution up to 2994 x 2320 picture elements
Author(s): Reimar K. Lenz; Udo Lenz
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Paper Abstract

A newly developed imaging principle two dimensional microscanning with Piezo-controlled Aperture Displacement (PAD) allows for high image resolutions. The advantages of line scanners (high resolution) are combined with those of CCD area sensors (high light sensitivity geometrical accuracy and stability easy focussing illumination control and selection of field of view by means of TV real-time imaging). A custom designed sensor optimized for small sensor element apertures and color fidelity eliminates the need for color filter revolvers or mechanical shutters and guarantees good color convergence. By altering the computer controlled microscan patterns spatial and temporal resolution become interchangeable their product being a constant. The highest temporal resolution is TV real-time (50 fields/sec) the highest spatial resolution is 2994 x 2320 picture elements (Pels) for each of the three color channels (28 MBytes of raw image data in 8 see). Thus for the first time it becomes possible to take 35mm slide quality still color images of natural 3D scenes by purely electronic means. Nearly " square" Pels as well as hexagonal sampling schemes are possible. Excellent geometrical accuracy and low noise is guaranteed by sensor element (Sel) synchronous analog to digital conversion within the camera head. The cameras principle of operation and the procedure to calibrate the two-dimensional piezo-mechanical motion with an accuracy of better than O. 2. tm RMSE in image space is explained. The remaining positioning inaccuracy may be further

Paper Details

Date Published: 1 November 1990
PDF: 6 pages
Proc. SPIE 1357, Medtech '89: Medical Imaging, (1 November 1990); doi: 10.1117/12.23927
Show Author Affiliations
Reimar K. Lenz, Technische Univ. Muenchen (Germany)
Udo Lenz, CCD Videometrie (Germany)


Published in SPIE Proceedings Vol. 1357:
Medtech '89: Medical Imaging

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