Difference between revisions of "Stereo Vision Systems"

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Revision as of 11:50, 5 October 2018

Comparison table

3D Vision System Elphel MNC393-XCAM Reviewed competing products
Released 2018 2015-2018
Depth sensing technology
  • Active IR and projected pattern variations or
  • SLAM variations
Depth range, m 10-5000m 0.1-20m
Depth accuracy

Disparity accuracy is 0.05px:

  • 1% at 100m
  • 5% at 500m
  • 10% at 1000m
  • 20% at 2000m
  • Some do not have information
  • The assumption is nobody can get below 0.5px disparity
  • Passive systems (no IR), best:
    • 1.5% at 10m
    • 17.5% at 100m
  • Active systems, best (ZiVID):
    • 0.1mm @ 0.6m but the range is 0.6-1.1m
  • HTC VIVE: 5% @ 2m (info by StereoLabs)
  • ZED Mini by StereoLabs:
    • 1% at 1m
    • 9% at 10m
Depth Processing Post-processing (real-time - future development) Post-processing or real-time (mostly)
Number of image sensors 4 (square) 1-2
Stereo baseline, mm 250 (diagonal) from single lens to 63-250
IR projectors not used some have, some don't
Framerate up to 10fps recording in high quality
  • ZED Mini: varies from 15fps @4k to 100fps @1344x376
  • Others are somewhat similar
Output interfaces
  • 1 GigE
  • USB2
  • eSATA (external storage)
  • internal storage (m.2 SSD)
  • Possible to precisely sync multiple systems
  • some have 1 GigE
  • most - USB3
Position and orientation
  • GPS
  • Compatible with Analog Devices IMUs: up to 2460Hz
 some have IMU (100-500Hz), but most don't
Image sensor shutter type ERS (Electronic Rolling Shutter) ERS or Global
Output format

3D model:

  • OBJ with textures
  • X3D with textures
  • RGBD
  • Unknown
  • Z-map
Color Color
  • Color (most)
  • Mono
Full Hardware setup
  • Some laptop when recording (network GUI - only browser, no extra drivers)
  • Good PC (+NVidia GPU) when processing
  • Some require PC with extra drivers or other software
  • Some require PC with extra drivers or other software + good NVidia GPU (like ZED)

Links

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