RobotEye REV25-ST Vision
3-Axis High Performance
Stabilized Vision System

The RobotEye Vision REV25-ST is a 3-axis high performance stabilized vision system combining the REV25’s unprecedented motion bandwidth with an extremely low latency stabilization control loop. RobotEye Stabilized Vision systems are conceptually similar to conventional stabilized 3-axis stabilized gimbals systems in that they both effect the stabilized pointing of cameras about three axes, but that is where the similarity ends.

RobotEye Vision systems deliver ground breaking capabilities in camera pointing with dramatic implications for many existing directable camera applications while also enabling new applications not previously possible. The REV25-ST couples the unique ability of RobotEye Vision system’s to steer the view of cameras at incredible speed and precision with extremely low latency firmware level stabilization that operates independently of motion commanded by the host.

As with other RobotEye Vision system’s the REV25-ST system aperture can be controlled in a variety of ways to accomplish a wide range of tasks. The REV25-ST allows stabilization to be enabled or disabled as required during operation. Stabilization operates in firmware in a layer underneath highly dynamic motion commanded by the host through the RobotEye API. Due to the extreme stabilization bandwidth delivered by the REV25-ST, regardless of demands placed on the system by higher level behaviours stabilization of the system aperture continues uninterrupted.

With the REV25-ST, Ocular Robotics has delivered a stabilized camera system unmatched in performance in its class. Key features particular to the REV25-ST are:

3-Axis Stabilization

Not only is stabilization about three axes rare in a form factor comparable to the REV25-ST, the REV25-ST delivers stabilized motion about yaw, pitch and roll at the high levels of performance characteristic of RobotEye Vision systems.

Operate in a Global Coordinate Frame

When stabilization is active on the REV25-ST, pointing commands are issued as roll-pitch-yaw Tait-Bryan angles in a North-East-Down reference frame. The REV25-ST has ample motion bandwidth to simultaneously stabilize and execute complex behaviors such as, track, even multiple objects or build maps. The ability to issue the motion commands needed to execute these behaviours in the global coordinate frame and recover information about the current orientation of the system aperture in the same global frame is invaluable for users and application developers.

Bounded IMU Drift

The AHRS used in the REV25-ST uses Magnetometers and MEMS Accelerometers in addition to MEMS Gyroscopes. This additional information enables our stabilization system to bound drift in all three rotational axes, as compared to the 2-axis bounding possible with Gyro/Accelerometer systems, or the unbounded drift from a Gyro-only system.

Camera Choice Flexibility

As with the REV25 Vision system the REV25-ST also allows complete freedom to attach any C-mount camera to the REV25-ST that is needed for your application. Whether your camera is the size of a brick or a matchbox, 50 grams or 5 kilograms there is no difference in the pointing dynamics attainable with RobotEye Vision systems. Ocular Robotics is able to install a wide selection of cameras from the Allied Vision Technologies range or the user is free to install and use their own camera of choice.

Mechanical Electrical
Maximum Aperture Rate 10,000°/s2 Communication Ethernet
Maximum Aperture Acceleration 100,000°/s2 Supply Voltage 24VDC
Azimuth Axis Resolution 0.010° Power Consumption – Typical (average) < 40 W
Elevation Axis Resolution 0.010° Power Consumption – Maximum (transient) 200 W
Azimuth Range 360° Continuous Optical
Elevation Range 70° (±35°) Optical Field of View (diagonal) 40°
Accuracy 0.05° Optical Port C-mount
Weight (Unit/System) 1.6 kg / 2.5 kg Software
 Inertial RobotEye C++ Development Library Windows/Linux
Stabilization Update Frequency 800 Hz Environmental
Maximum Angular Rate ±2000°/s Operating Temperature Range 20°C – +70°C
Static Accuracy (pitch/roll) 0.5° IP Class Rating  65
Static Accuracy (heading) 2.0°
Angular Resolution < 0.05°
Repeatability < 0.2°