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US 10,771,776 B2Granted
Apparatus and method for generating a camera model for an imaging system
AssigneeSony Corporation
InventorHendrik Schilling
Life of this patent
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Abstract
The disclosure pertains to an apparatus comprising a circuitry. The circuitry is configured to obtain a calibration image of a target, to derive a sparse image based on the calibration image, wherein the sparse image includes image points, to derive ray support points based on the image points by performing an image to target mapping of the image points based on a polynomial function, wherein the ray support points being indicative of light rays reflected by the target and incidenting on an image sensor, and to generate a camera model based on the derived ray support points.
Claims16
An apparatus comprising:
- circuitry configured to
- obtain a calibration image of a target;
- derive a sparse image based on the calibration image, wherein the sparse image includes image points;
- derive ray support points based on the image points by performing an image to target mapping of the image points based on a polynomial function, wherein the ray support points are indicative of light rays reflected by the target and incidenting on an image sensor;
- and
- generate a camera model based on the derived ray support points;
- derive an error metric of the derived ray support points, wherein the camera model is generated further based on the error metric;
- calculate ray-target intersections;
- compare the ray-target intersections with the ray support points to derive the error metric of the derived ray support points;
- and
- transform the error metric from target coordinates into image coordinates.
8 more elements
A method, comprising:
- obtaining a calibration image of a target;
- deriving a sparse image based on the calibration image, wherein the sparse image includes image points;
- deriving ray support points based on the image points by performing an image to target mapping of the image points based on a polynomial function, wherein the ray support points being indicative of light rays reflected by the target and incidenting on an image sensor;
- generating a camera model based on the derived ray support points;
- deriving, an error metric of the derived ray support points, wherein the camera model is generated further based on the error metric;
- calculating ray-target intersections;
- comparing the ray-target intersections with the ray support points to derive the error metric of the derived ray support points;
- and
- transforming the error metric from target coordinates into image coordinates.
6 more elements
Dependencies are inferred from the claim text.