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Qualisys Underwater Motion Capture System

Arqus Power for Underwater Motion Capture

Qualisys Underwater MOCAP Cameras are the world’s only commercially available optical motion capture cameras for underwater use. All cameras are pressure tested to a depth of 40m. Weight and volume are balanced to give the camera neutral buoyancy for easy handling in water

Key Features of the Arqus Underwater mocap
  • High speed underwater motion capture
  •  Underwater video with full HD @ 85 fps1
  •  Low latency for real-time applications
  •  Resolution: 2, 4, 9 and 12 megapixels
  •  IP68 housing pressure tested to 40 m (130 ft)
  •  Integrated high-power LED strobe
  •  Up to 30 m (100 ft) range1
  •  Easily synchronized with external systems

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The power of Arqus – Underwater

Qualisys Underwater MOCAP Cameras are the world’s only commercially available optical motion capture cameras for underwater use. All cameras are pressure tested to a depth of 40m. Weight and volume are balanced to give the camera neutral buoyancy, this allows easy handling in water. Arqus Underwater is a robust, high resolution camera for long range measurements under water.

The range of Qualisys Underwater MOCAP Cameras are suitable for a wide range of applications. These include vessel design, naval research, fishing industry and sports science.

The camera’s strobe consists of 24 high power deep blue LEDs that can illuminate markers at more than 30 m distance (100 ft). The custom-designed housing is made of stainless steel / polycarbonate and has been pressure tested to 40 m depth (130 ft).

The powerful LEDs are thermally connected to the housing to get the most efficient cooling for best performance.

Key Features of the Arqus Underwater mocap
  • High speed underwater motion capture
  •  Underwater video with full HD @ 85 fps1
  •  Low latency for real-time applications
  •  Resolution: 2, 4, 9 and 12 megapixels
  •  IP68 housing pressure tested to 40 m (130 ft)
  •  Integrated high-power LED strobe
  •  Up to 30 m (100 ft) range1
  •  Easily synchronized with external systems
The go-to camera for underwater mocap in small spaces.
  • The Miqus Underwater is available as two marker camera models and as a pure video camera.
  • The Miqus Underwater is suitable for small tanks and pools where you are close to your subject, as made possible with its wide angle lens.
  • At just over 2 kg (5.5 lb), the Miqus is half the weight compared to the Arqus.

Get reference video with Qualisys Underwater MOCAP Cameras

  • Get synchronized reference video, available in color and monochrome.
  • Miqus Video Underwater enables 3D video overlay as reference for your captures but can also be used as a standalone video solution.
  • The underwater camera bridges the gap between small, handheld consumer devices and more expensive cameras that are typically used in industrial settings.
  • The Miqus Underwater Video cameras stream M-JPEG compressed full HD video in 85 fps via standard gigabit Ethernet.

The camera is built with the same durable camera body as the Miqus Underwater. It’s made of stainless steel and poly-carbonate, making it withstand the test of time in tough underwater environments.

Underwater human motion
  • Qualisys underwater cameras have many use cases within underwater bio-mechanics such as lower body gait analysis or studying the kinematics of swimmers.
  • Combine Qualisys underwater cameras with our skeleton solving software to capture underwater motions performed by actors, to be used in games and film.

 

Tracking marine vessels & structures

An underwater motion capture system is an essential tool in the development and testing of underwater vehicles and equipment. Examples of use include the tracking of free-running AUVs, underwater objects towed in a towing tank, mooring lines, fish net trawl doors and oil pipeline motions.

 

Combining above and underwater

By combining Qualisys groundbreaking underwater cameras with an above water camera system, in what is known as a ‘Twin system’ setup, above- and underwater movement can be merged together into a single capture.

 

Integrations

Qualisys Track Manager takes full advantage of the features of the camera, such as the ability to stream 6 DOF data to 3rd party applications in real-time. Synchronization with external equipment is also possible.

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1 Dependent on capture water turbidity.

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