|
Glossary |
Computational
Sensor Laboratory |
|
| Dynamic Triangulation | ||
| The
triangulation setup is shown in figure below. The stripe of laser light
is projected onto the scene. A sensor, usually a CCD camera, views the
scene. The depth to the point on the object is found as:
In dynamic triangulation the laser is swept across the scene using a scanning mirror or other techniques. The angle alpha is then determined by measuring elapsed time from some reference point. The range is now determined using:
To compute range maps it is necessary to determine the time t when the image of the laser passes a location Xo in each row of a sensor. |
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