3D range camera

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3D range camera

• Zhaoyi Wei

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1. Applications

• To achieve an adequate description of our
  environment includes the relative 3D position and
  motion of the different objects in a scene.

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1. Applications

• To achieve an adequate description of our
  environment includes the relative 3D position and
  motion of the different objects in a scene.

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2. Categories based on the principle

• Triangulation
• Interferometry
• Time-of-flight (TOF)

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2. Categories based on the principle

• Triangulation
• Interferometry
• Time-of-flight (TOF)
• A time-of-flight sensor module measures
  distance by observing the time delay ?T between
  emission and detection of light that travels from
  an active light source, bounces off a surface in
  the scene, and returns to the camera.

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3. Applications

• Vehicle (Airbag deployment)
• Manufacturing
• Healthcare (Guiding the blind)

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4. Typical products

• CanestaVision Chips

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Specification

• Pixels Field of view 81 (H)x 104 (V),
• 30 (H)x 39(V)
• 88 (H)x 114 (V)
• Frame rate max 30fps
• Wavelength 870 nm

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• SwissRanger SR-3000

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Specification

• Pixel array resolution 176 x 144
• Pixels Field of view 47.5 x 39.6 degrees
• Non-ambiguity range 7.5 m
• Frame rate max 50fps
• Optical lens f/1.4
• Illumination power (optical) lt 1 W
• Wavelength 850 nm
• Modulation frequency Default 20 MHz
• COutput data x, y, z (coordinates), i
  (intensity)

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• Similarity
• Both based on TOF principle
• Processing on the fly (Directly output depth)
• Use Infrared or Near-infrared light (Decrease the
  impact of ambient light)