We are currently developing a high-speed photographic system that images objects engulfed in high radiance backgrounds. Using a copper vapor laser as a pulsed illuminator in conjunction with a narrow band interference filter and an electro-optic shutter as spectral and temporal filters respectively, the background radiance is diminished by eight orders of magnitude. Consequently, the back-scattered imaging photons from the laser overpower the radiant background, resulting in a sufficiently high imaging-to- background ratio. Such high levels of background discrimination is made possible by the copper vapor laser that illuminates within a spectral line of 7 GHz with great intensity centered on the 1 nm vapor laser that illuminates within a spectral line of 7 GHz with great intensity centered on the 1 nm wide transmission band of the interference filter. The laser emits 30 ns pulses with a repetition rate of 20 kHz, synchronized with an equivalent open aperture period of the electro-optic shutter. The image is captured by an electronic camera at the rate of 20,000 per second. The image is available for further digital image processing.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    High-speed photographic system for objects with highly radiant backgrounds



    Conference:

    Color Imaging: Device-Independent Color, Color Hard Copy, and Graphic Arts II ; 1997 ; San Jose,CA,USA


    Published in:

    Publication date :

    1997-04-04





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Photographic recording of high-speed processes

    Dubovik, Aleksandr S. | TIBKAT | 1965


    Infrared color vision: separating objects from backgrounds

    Scribner, Dean A. / Schuler, Jonathon M. / Warren, Penny R. et al. | SPIE | 1998


    Wavelet Methods for Extracting Objects from Complex Backgrounds

    Strickland, R. N. / Hahn, H. I. / IEEE; Signal Processing Society | British Library Conference Proceedings | 1996



    Infrared color vision: separating objects from backgrounds (Invited Paper) [3379-01]

    Scribner, D. A. / Schuler, J. / Warren, P. et al. | British Library Conference Proceedings | 1998