3-D Measurements From Video Stereo Pairs

M A Weissman

doi:10.1117/12.944766

8 June 1988 3-D Measurements From Video Stereo Pairs

M A Weissman

Proceedings Volume 0902, Three-Dimensional Imaging and Remote Sensing Imaging; (1988) https://doi.org/10.1117/12.944766
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States

Abstract

We have developed a "Stereoscopic Imaging System" (SIS) which acquires stereo pairs from video cameras (or other RS170 sources), aligns and enhances the images as needed, stores and recalls them from disk, displays them in "true" 3-D on a stereo monitor, and provides 3-D measurements of objects and features in the composite image. The system is based on the Tektronix Stereoscopic Graphics System (Liquid Crystal Shutter SPU, Tektronix, Inc.). This system uses a screen-sized liquid crystal to modulate the polarity of the light coming from the monitor at a rate of 120 times per second, and the left and right views are sent to the monitor at the same rate (each view is displayed at 60 Hz). The viewer wears lightweight, passive glasses with left and right circularly polarized lens. The display is controlled by an AT-compatible graphics card (the Stereoscopic Graphic Adapter or SGA) that stores each image with a resolution of 512x512x8, has room for four images (two pairs), and drives an RGB color monitor (64 KHz). (SIS uses color for overlays, but it does not yet handle color images.)

Citation Download Citation

M A Weissman "3-D Measurements From Video Stereo Pairs", Proc. SPIE 0902, Three-Dimensional Imaging and Remote Sensing Imaging, (8 June 1988); https://doi.org/10.1117/12.944766

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KEYWORDS

Cameras

Video

3D image processing

3D metrology

3D displays

Imaging systems

Visualization

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