Abstract: A computer-implemented method of modelling a common structure component, the method comprising, in a modelling computer system: receiving a plurality of captured frames, each frame comprising a set of 3D structure points, in which at least a portion of a common structure component is captured; computing a first reference position within at least one first frame of the plurality of frames; selectively extracting first 3D structure points of the first frame based on the first reference position computed for the first frame; computing a second reference position within a second frame of the plurality of frames; selectively extracting second 3D structure points of the second frame based on the second reference position computed for the second frame; and aggregating the first 3D structure points and the second 3D structure points, thereby generating an aggregate 3D model of the common structure component based on the first and second reference positions.

Abstract: A computer-implemented method of creating 2D annotation data for annotating one or more perception inputs comprises: receiving at the annotation computer system at least one captured frame comprising a set of 3D structure points, in which at least a portion of a structure component is captured; computing a reference position for the structure component within the frame; generating a 3D model for the structure component by selectively extracting 3D structure points of the frame based on the reference position; computing a projection of the 3D model into an image plane; and storing 2D annotation data of the computed projection in persistent computer storage for annotating the structure component within the image plane.

Abstract: A computer-implemented method of modelling a common structure component, the method comprising, in a modelling computer system: receiving a plurality of captured frames, each frame comprising a set of 3D structure points, in which at least a portion of a common structure component is captured; computing a first reference position within at least one first frame of the plurality of frames; selectively extracting first 3D structure points of the first frame based on the first reference position computed for the first frame; computing a second reference position within a second frame of the plurality of frames; selectively extracting second 3D structure points of the second frame based on the second reference position computed for the second frame; and aggregating the first 3D structure points and the second 3D structure points, thereby generating an aggregate 3D model of the common structure component based on the first and second reference positions.

Abstract: Communication and resolution of potential recording conflicts are disclosed. In one aspect, a request for recording a new program is received, and recording schedules are examined to determine whether another program had been previously scheduled for recording at the same time. If so, a display that illustrates and allows resolution of the conflict is automatically provided. In another aspect, a recording queue and an exception list provide efficient identification of conflicts and management of scheduled recordings. The recording queue lists each program to be recorded, and the exception list identifies conflicting pairs in the recording queue and indicates which item in each pair is respectively retained (preempting) and deferred (preempted). Canceling a preempting recording removes it from the recording queue and the conflict from the exception list to reinstate a preempted program. Channel guides that illustrate recording conflicts are also provided.