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39 lines
1.7 KiB
Markdown
39 lines
1.7 KiB
Markdown
# Generated Data
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The KITTI data does not provide all the data types we would like to demonstrate. Specificially data
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related how it makes predictions about objects and makes plans based on those predictions.
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For the sake of demonstration purposes we have generated additional from the base KITTI data set to
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showcase a features to show how XVIZ can be used in a more complete data environment.
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The KITTI converter has an option `--fake-streams` that can be used to output additional XVIZ stream
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described below.
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## Vehicle trajectory path
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The KITTI data does not provide any planning information which is common in systems. However we can
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use the stored location information to generate a trajectory to preview as though it was the planned
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trajectory.
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The `/vehicle/trajector` is generated by looking into the future known position of he vehicle and
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generating a polyline to show the path that would be taken.
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## Variables
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The planning process of a system deals with the future timeline in order to make decisions now.
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Unlike **time_series** data in XVIZ, **variable** provide the mechanism for capturing this future
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timeline metric information for a given timestamp.
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Multiple streams with the `/motion_planning` prefix will be generated to show additional plot
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capabilties.
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## Objects future_instances
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Similar to how **variables** provide you the ability to capture metrics over future timeline,
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**future_instances** provide the same ability for **primitive** objects.
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This data always generated in the KITTI stream `/tracklets/objects/futures'. This can be seen in the
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**streetscape.gl**
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[sample application](https://github.com/uber/streetscape.gl/tree/master/docs/get-started/starter-kit.md)
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using the slider under the playback control in the lower right.
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