frames
Last updated
Last updated
In the VisionAI format, a frame serves as a container for dynamic, time-based information, encompassing both object and context data. They are used to represent data that is dynamic and time-based in nature, such as information about the location, velocity, and orientation of objects within a sequence.
Each frame is represented by a series of 12 digital numbers that are arranged in order to indicate the temporal relationship.
It describes this frame’s information including the reference time, and corresponding streams.
It describes this frame’s stream information including the corresponding stream name and related data path.
It contains the additional properties of this stream including the absolute time of the sensor in this frame.
More infomation on
To describe a bbox dataset with one camera sensor:
To describe a dataset with one camera sensor (bbox annotation) and one lidar sensor (cuboid annotation) in the coordinate system of iso8855-1:
To describe a semantic segmentation dataset with one camera sensor:
To describe a dataset with taggings:
name | description | type | required |
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name | description | type | required |
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name | description | type | required |
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name | description | type | required |
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${FRAME_ID}
The id of frame in this annotation. It is the frame order containing 12 digital numbers. (ex. 000000000000, 000000000001, 000000000002)
object
true
frame_properties
Show the information of this frame.
object
true
contexts
Shows all contexts’ dynamic information in this frame. Refer to frames-contexts.
object
false
objects
Shows all objects’ dynamic information in this frame. Refer to frames-objects.
object
false
timestamp
A relative or absolute time reference that specifies the time instant this frame corresponds to. Representation of date and time format: "yyyy-MM-ddTHH:mm:ss.FFFZ" (ex. 2021-09-03T11:23:56.000+0100)
time
false
streams
The “streams" information refers to the streams(sensors) that were used to capture data in this particular frame. This information helps to identify the sources of data that are included in that frame.
object
true
${STREAM_NAME}
The name of the stream under this frame. All the streams are matched and described under the visionai - streams.
object
true
uri
The url or file path for this stream data.
object
true
stream_properties
Additional properties of this stream. ex. sync infomation
object
false
sync
Define the frame number of the stream that corresponds to this frame, along with timestamping information.
object
false
timestamp
An absolute time reference that specifies the time instant from the sensor of this frame. Representation of date and time format: "yyyy-MM-ddTHH:mm:ss.FFFZ" (ex. 2021-09-03T11:23:56.000+0100)
time
false