Simultaneous Real Time Motion Control & Motion
Capture
Real Time Motion Control, Motion Capture,
and Live Video Backplate 1
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Some examples of real time streaming from a motion
control rig, a character generated by a motion capture system,
and a live video stream. What you see is what was on the monitor
live on set. This is not a post production render!
Motion Capture Virtual Camera To Motion Control
Camera
Convert
Hand Held Virtual Camera to Repeatable Motion Control Camera
In this example a virtual hand held camera was
tracked and converted using Take4D to map onto a physical motion
control camera allowing repeat passes of a shot with a hand
held look and feel.
Motion Control Data Streams
Axis
& Cartesian Co-Ordinate System Data Streams
This is an example of using Axis data streaming
from a motion control rig in real time to generate a virtual
camera. A 3D model can the be superimposed in front of the live
image from the video tap of the real camera. The Axis data here
is not (in this example) synchronized to the video.
Motion Control
3D
Previsualization to Motion Control Camera & Real Time Data
Streams
This is a short show reel showing a number of
feature of Take4D including the ability to stream 6DOF camera
data in real time to third party products.
Motion
Base - Car Demo
This example demonstrates Take4D's capability
to convert camera and model data from 3D previsualisation into
motion control camera and motion base data. Top left is the
original previz, top right shows Take4D's solutions, bottom
left is through the lens of the virtual (and hence real) motion
control camera, and bottom right a composite of the end result.
Camera Tracking
Camera Tracking Systems 1
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Here are some examples of the latest research into Laser camera
tracking. The main advantage of this technology is the setup
time (<30mins) and accuracy - sub millimeter sub degree at
ranges of up to 15 meters. The only components required are
the laser and sensor which can be mounted to any head.
Example
1:
This shows the sensor attached to a hand held
camcorder. The lens nodal point is not precisely measured and
the data is not synchronized. It is mainly to illustrate the
"freedom" of movement and speed of tracking - even
throwing the camcorder about does not change the tracking capabilities.
Example
2:
This is a lab test of synchronization. Here the
laser is being triggered directly from the video signal. The
data is perfectly locked, however again the lens nodal point
is not calibrated.
Example
3:
This shows a different laser technology to 1)
and 2). This comprises of a motorized laser and motorized mirror.
The motors in the mirror provide the rotational information,
and the laser the translation data. The advantage of this technology
is that it has a much larger yaw freedom (210 degrees) compared
to the previous (90 degrees) however the motors in this version
of sensor are not optimally tuned for dynamic response and exhibit
some hysteresis. Again the data here is not synchronized to
the video.
Optical Motion Capture
Active
& Passive Optical Motion Capture Systems
This demo show some tests of Optical Motion Capture
systems both pushed to their limits and used under normal circumstances.
The first example show a horse shoe arrangement of 8 cameras
and an Arri 435 used at extreme distance from those cameras.
There is some loss in data capture accuracy at this distance.
The second example is under a smaller 360 configuration and
shows what a typical result for these systems. The data here
is not synchronized to the capture system. Improvements can
easily be made using this and other motion capture technologies
- research was postponed in favor of the Laser tacking system.
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