Browse Prior Art Database

Stereo Image Data Reducer

IP.com Disclosure Number: IPCOM000095903D
Original Publication Date: 1964-Sep-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Bauer, EW: AUTHOR

Abstract

This apparatus obtains contour lines directly from a model or from a stereo pair utilizing video cameras and a cathode ray tube display.

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Stereo Image Data Reducer

This apparatus obtains contour lines directly from a model or from a stereo pair utilizing video cameras and a cathode ray tube display.

Model 1 having visual cues on its surface is scanned by video cameras 2 which are spaced apart in the binocular direction in the manner of stereo cameras. Each video camera is controlled by a sweep generator 3. Delay apparatus 4 associated with each of sweep generators 3 delays the sweep of one camera with respect to the other.

The binocular separation between cameras 2 causes each camera to record a given point on model 1 at different relative positions on their recording surfaces. For a given delay, only points at the same elevation are brought into registry. All other points of the model or of the stereo pair are out of registry.

Analog outputs are obtained from cameras 2 and delivered over transmission lines 5 to equals compare circuit 6. When the same points on model 1 are in registry because of the relative delay introduced between the video images, an output is produced on display CRT 7. This shows all the points of the same elevation, a contour line, on display tube 7. Such has a sweep which is synchronized with that of generators 3. A simple change in the delay introduced produces a different contour line representing a new elevation.

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