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Variable resolution depth imaging by using elliptical mirrors.

J Clark, A M Wallace

    Applied Optics
    |March 1, 1997
    PubMed
    Summary
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    This study introduces a new optical sensor using triangulation and reconfigurable mirrors to create 2D depth maps. The sensor design allows adjustable resolution and occlusion, optimizing depth map acquisition for various object geometries.

    Area of Science:

    • Optics and Photonics
    • Computer Vision
    • Robotics

    Background:

    • Triangulation is a fundamental principle for depth sensing.
    • Traditional depth sensors often face limitations in resolution-depth trade-offs and occlusion.
    • Reconfigurable optical systems offer potential for enhanced adaptability.

    Purpose of the Study:

    • To present a novel optical sensor for acquiring two-dimensional (2D) depth maps.
    • To introduce a unique sensor design utilizing planar elliptical mirrors for reconfigurable triangulation geometry.
    • To demonstrate the sensor's capability to adjust between low-depth resolution with minimal occlusion and high-depth resolution with higher occlusion.

    Main Methods:

    • The sensor employs the principle of triangulation for depth acquisition.

    Related Experiment Videos

  • Novel design incorporates planar elliptical mirrors enabling continuous variation of triangulation geometry.
  • System precision is theoretically modeled and validated through experimental demonstration.

    • Main Results:

    • The sensor design allows for dynamic reconfiguration of the triangulation geometry.
    • Depth maps can be acquired with a tunable trade-off between depth resolution and occlusion.
    • Demonstrated avoidance of occlusion in depth map acquisition based on object geometry.

    Conclusions:

    • The novel optical sensor provides a flexible approach to 2D depth map acquisition.
    • The reconfigurable design overcomes limitations of fixed-geometry sensors.
    • This adaptable depth sensing technology has potential applications in robotics and 3D imaging.