US 2023/0267647 A1 · SINGLE-SHOT CAMERA CALIBRATION

Abstract

Aspects of the present disclosure relate to automated camera calibration. In examples, features are identified within image data of a scene that was captured by an image capture device. For instance, semantic segmentation may be used to identify the features within the image data. The identified features may be processed based on one or more geometric constraints to generate three-dimensional reference points within the scene that are associated with two-dimensional locations of the image data. Multiple candidate sets of camera parameters may be generated based on the reference points. Noisy and/or unreliably candidate sets may be omitted, and remaining candidate sets of camera parameters may be used to generate a final set of camera parameters. The final set of camera parameters may be used to derive information associated with the scene from which the image data was captured.

Claims20

Dependent claims

A system comprising:

at least one processor;
and
memory storing instructions that, when executed by the at least one processor, causes the system to perform a set of operations, the set of operations comprising:
obtaining image data captured by an image capture device of a three-dimensional (3D) scene;
processing the image data to identify features within the image data;
extracting a set of reference points based on the identified features;
generating, based on the set of reference points, a plurality of candidate sets of camera parameters;
filtering the candidate sets of camera parameters to generate filtered candidate sets;
and
processing the filtered candidate sets to generate a final set of camera parameters for the image capture device.

7 more elements

A method for automated calibration of an image capture device, comprising:

obtaining image data captured by an image capture device of a three-dimensional (3D) scene;
processing the image data using a machine learning model to identify features associated within the image data, wherein the features are associated with one or more feature classes defined by a set of rules;
extracting a set of reference points based on one or more geometric constraints associated with the identified features, wherein the one or more geometric constraints are defined by the set of rules;
and
generating, based on the set of reference points, a set of camera parameters for the image capture device.

2 more elements

Dependencies are inferred from the claim text.

Single-shot camera calibration

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Single-shot camera calibration

Life of this patent

Abstract

Claims20