Method and apparatus for extracting centerline of tubular object
US10818027B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2017 |
| Grant date | Oct 27, 2020 |
| Priority date | — |
| Expiry date | Nov 16, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30172
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and an apparatus for extracting a centerline of a tubular object are provided. The method includes: preprocessing an image of the tubular object whose centerline is to be extracted to obtain an enhanced image, acquiring a gradient vector flow field of the enhanced image; acquiring a deformation force parameter based on the gradient vector flow field and extracting ridge points of the tubular object from the enhanced image, establishing a regularized open curve deformable model; if a deformation end condition is not met, deforming and processing one ridge line segment in the initial ridge line segment list based on the model to obtain a centerline segment of the tubular object, updating the initial ridge line segment list based on the ridge line segment traversed; if the deformation end condition is met, generating a centerline of the tubular object based on the centerline segments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.