Transmission of parameters in a video communication system for calibration purposes

A method for tracking of a projectile, wherein the method comprises:

• obtaining, by a tracking management subsystem and from a tracking assembly communicatively coupled to the tracking management subsystem, a tracking stream including tracking data maps, which are associated with timestamps, wherein each tracking data map of the tracking data maps is associated with a respective timestamp of the timestamps;
• obtaining, by the tracking management subsystem, a set of transform parameters, wherein the set of transform parameters includes at least one of:
• a tracking spatial parameter relating to translation and/or orientation of the tracking assembly, wherein the tracking spatial parameter is associated with one or more of the timestamps,
• a tracking focus parameter relating to focal length of the tracking assembly, wherein the tracking focus parameter is associated with one or more of the timestamps,
• a video spatial parameter relating to translation and/or orientation of a video camera, wherein the tracking managing subsystem is communicatively connected to the video camera, wherein the video spatial parameter is associated with one or more of the timestamps, or
• a video focus parameter relating to focal length of the video camera, wherein the tracking managing subsystem is communicatively connected to the video camera, wherein the video focus parameter is associated with one or more of the timestamps;
• deriving, by the tracking managing subsystem, a set of blobs by applying a blob detection procedure to at least two tracking data maps of the tracking stream;
• and
• sending, by the tracking management subsystem and to a rendering subsystem, the set of blobs and the set of transform parameters for use in calibrating from one tracking data map to another tracking data map in the tracking stream in view of changing conditions at the tracking assembly or the video camera as indicated by the set of transform parameters.

A system for providing blobs relating to tracking of a projectile, the system comprising a tracking managing subsystem that is communicatively connected to a tracking assembly, wherein the tracking managing subsystem is configured to perform operations comprising:

• obtaining, by the tracking management subsystem and from a tracking assembly communicatively coupled to the tracking management subsystem, a tracking stream including tracking data maps, which are associated with timestamps, wherein each tracking data map of the tracking data maps is associated with a respective timestamp of the timestamps,
• obtaining, by the tracking management subsystem, a set of transform parameters, wherein the set of transform parameters includes at least one of:
• a tracking spatial parameter relating to translation and/or orientation of the tracking assembly, wherein the tracking spatial parameter is associated with one or more of the timestamps,
• a tracking focus parameter relating to focal length of the tracking assembly, wherein the tracking focus parameter is associated with one or more of the timestamps,
• a video spatial parameter relating to translation and/or orientation of a video camera, wherein the tracking managing subsystem is communicatively connected to the video camera, wherein the video spatial parameter is associated with one or more of the timestamps, or
• a video focus parameter relating to focal length of the video camera, wherein the tracking managing subsystem is communicatively connected to the video camera, wherein the video focus parameter is associated with one or more of the timestamps,
• deriving, by the tracking managing subsystem, a set of blobs by applying a blob detection procedure to at least two tracking data maps of the tracking stream, and
• sending, by the tracking management subsystem and to a rendering subsystem, the set of blobs and the set of transform parameters for use in calibrating from one tracking data map to another tracking data map in the tracking stream in view of changing conditions at the tracking assembly or the video camera as indicated by the set of transform parameters.

A non-transitory, computer-readable storage medium containing computer readable code units which when executed on a tracking managing subsystem causes the tracking managing subsystem to perform operations comprising:

• obtaining, by a tracking management subsystem and from a tracking assembly communicatively coupled to the tracking management subsystem, a tracking stream including tracking data maps, which are associated with timestamps, wherein each tracking data map of the tracking data maps is associated with a respective timestamp of the timestamps,
• obtaining, by the tracking management subsystem, a set of transform parameters, wherein the set of transform parameters includes at least one of:
• a tracking spatial parameter relating to translation and/or orientation of the tracking assembly, wherein the tracking spatial parameter is associated with one or more of the timestamps,
• a tracking focus parameter relating to focal length of the tracking assembly, wherein the tracking focus parameter is associated with one or more of the timestamps,
• a video spatial parameter relating to translation and/or orientation of a video camera, wherein the tracking managing subsystem is communicatively connected to the video camera, wherein the video spatial parameter is associated with one or more of the timestamps, or
• a video focus parameter relating to focal length of the video camera, wherein the tracking managing subsystem is communicatively connected to the video camera, wherein the video focus parameter is associated with one or more of the timestamps,
• deriving, by the tracking managing subsystem, a set of blobs by applying a blob detection procedure to at least two tracking data maps of the tracking stream, and
• sending, by the tracking management subsystem and to a rendering subsystem, the set of blobs and the set of transform parameters for use in calibrating from one tracking data map to another tracking data map in the tracking stream in view of changing conditions at the tracking assembly or the video camera as indicated by the set of transform parameters.