Patent · US Active

Iterative image reconstruction with a sharpness driven regularization parameter

US9959640B2 · kind B2 · utility

9Cited by

1References

20Claims

0Family size

Assignee

KONINIKLIJKE PHILIPS N.V. · NL

Inventors

Thomas Koehler · Norderstedt, DE
Roland Proksa · Hamburg, DE
Michael Grass · Hanstedt, DE

Key dates

Filing date	Sep 15, 2015
Grant date	May 1, 2018
Priority date	—
Expiry date	Sep 15, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG06T2211/424
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method includes performing a first pass of an iterative image reconstruction in which an intermediate first spectral image and an intermediate second spectral image are generated using an iterative image reconstruction algorithm, start first spectral and second spectral images, and initial first spectral regularization and second spectral regularization parameters, updating at least one of the initial first spectral regularization or second spectral regularization parameters, thereby creating an updated first spectral regularization or second spectral regularization parameter, based at least on a sharpness of one of the intermediate first spectral or second spectral images, and performing a subsequent pass of the iterative image reconstruction in which an updated intermediate first spectral and second spectral image is generated using the iterative image reconstruction algorithm, the intermediate first spectral and second spectral images, and the updated first spectral regularization and Compton scatter regularization parameters.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.