System and methods for determining camera parameters and uses thereof

A method comprising:

• receiving first and second videos from first and second cameras, respectively, of a pattern;
• selecting a first set of candidate frames from the first video based on a motion condition;
• selecting a second set of candidate frames from the second video based on the motion condition;
• calculating a pattern motion feature of the pattern in each candidate frame of the first and second set of candidate frames, the pattern motion feature characterizing a particular location as single average value;
• computing a time offset based on a motion of the pattern in each of the first and second set of candidate frames by tracking the pattern motion feature;
• generating frame synchronization data to synchronize candidate frames from the first and second set of candidate frames based on the time offset;
• and
• computing camera parameters for the first and second cameras based on the frame synchronization data and the first and second set of candidate frames.

A method comprising:

• computing a time offset based on an analysis of a motion of a pattern in first and second set of candidate frames selected from respective video streams, the time offset being indicative of a difference in recording time between corresponding frames from the first and second set of candidate frames that depict the pattern at a particular location, wherein computing the time offset comprises:
• calculating a pattern motion feature of the pattern in each candidate frame of the first and second set of candidate frames, the pattern motion feature characterizing the particular location as single average value;
• and
• tracking the pattern motion feature;
• generating frame synchronization data to synchronize candidate frames from the first and second set of candidate frames based on the time offset;
• computing camera parameters based on the frame synchronization data and the first and second set of candidate frames;
• generating a depth map for a scene based on the camera parameters and video footage of a scene from first and second cameras;
• and
• generating augmented video data comprising a main video footage of the scene that has been modified with a digital asset based on the depth map.

A method comprising:

• computing a time offset based on an analysis of a motion of a pattern in first and second set of candidate frames selected from corresponding first and second video streams, the time offset being indicative of a difference in recording time between corresponding frames from the first and second set of candidate frames that depict the pattern at a particular location, the first video stream being provided by a first camera and the second video stream being provided by a portable device, wherein computing the time offset comprises:
• calculating a pattern motion feature of the pattern in each candidate frame of the first and second set of candidate frames, the pattern motion feature characterizing a particular location as single average value;
• and
• tracking the pattern motion feature;
• generating frame synchronization data to synchronize candidate frames from the first and second set of candidate frames based on the time offset;
• and
• computing camera parameters for at least the first camera based on the frame synchronization data and the first and second set of candidate frames.