US 6,854,884 B2 · System and method of calibrating an image system and storage medium

Abstract

A system and method of calibrating an imaging system, in which intrinsic parameters relating to the various types of image which can be taken are calibrated in predetermined angular positions of an emitter of radiation, and of a receiver of the radiation. The intrinsic parameters are estimated using a two-dimensional phantom in order to establish a distortion field for a particular angulation, the distortion field for any angulation being calculated by polynomial interpolation of the distortion fields, each established for a control point, a control point being defined by a particular angulation for each axis of rotation of the imaging system, having to be subject to calibration.

Claims35

Dependent claims

A method for calibrating an imaging system, having

(a) means for emitting a high-energy beam;
(b) means for receiving the high-energy beam after it has passed through a member to be studied;
(c) means for controlling the receiving means;
(d) means for supporting the member;
and
(e) means for editing images;
comprising:
(f) calibrating intrinsic parameters relating to the various types of image which can be taken in a predetermined configuration of the system, the intrinsic parameters being estimated using a two-dimensional phantom in order to establish a distortion field for a particular configuration, the distortion field for any configuration being calculated by combining a plurality of distortion fields from causes assumed to be independent.

5 more elements

A medium for storing instructions to implement a process for calibrating an imaging system comprising:

(a) means for emitting a high-energy beam;
(b) means for receiving the high-energy beam after it has passed through a member to be studied;
(c) means for controlling the receiving means;
(d) means for supporting the member;
and
(e) means for editing images;
wherein the instructions comprise intrinsic parameters relating to the various types of image which can be taken are calibrated in a predetermined configuration of the system, the intrinsic parameters being estimated using a two-dimensional phantom in order to establish a distortion field for a particular configuration, the distortion field for any configuration being calculated by combining a plurality of distortion fields from causes assumed to be independent.

4 more elements

Dependencies are inferred from the claim text.

System and method of calibrating an image system and storage medium

Life of this patent

System and method of calibrating an image system and storage medium

Life of this patent

Abstract

Claims35