Verizon Patent and Licensing Inc.

Igor Gomon

Vidhya Seran

Elena Dotsenko

Timothy Atchley

Lonnie Souder

An illustrative camera calibration system accesses a set of images captured by one or more cameras at a scene. The set of images may each depict a same element of image content present at the scene, but may depict the element of image content differently in each image so as to show an apparent movement of the element from one image to another. The camera calibration system applies a structure-from-motion algorithm to the set of images to generate calibration parameters for the one or more cameras based on the apparent movement of the element of image content shown in the set of images. Additionally, the camera calibration system provides the calibration parameters for the one or more cameras to a 3D modeling system configured to model the scene based on the set of images. Corresponding methods and systems are also disclosed.

Methods and systems for camera calibration based on apparent movement of image content at a scene

A first capture engine application may synchronize a first clock to a global time domain to which a second clock used by a second capture engine application is also synchronized. The first capture engine application may receive a first image frame having a camera timestamp indicating a capture time of the first image frame with respect to a camera time domain. Based on the camera timestamp and the synchronized first clock, the first capture engine application may annotate the first image frame with a global timestamp indicating the capture time of the first image frame with respect to the global time domain. The first capture engine application may then transmit the annotated first image frame at a same transmission time as the second capture engine application also synchronously transmits a second image frame that is also annotated with the global timestamp. Corresponding methods and systems are also disclosed.

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Igor Gomon