Method for converting tone of chest X-ray image, storage medium, image tone conversion apparatus, server apparatus, and conversion method
US11406340B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2020 |
| Grant date | Aug 9, 2022 |
| Priority date | — |
| Expiry date | Feb 6, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10116
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for converting tone of a chest X-ray image includes obtaining a target chest X-ray image, detecting, in the target chest X-ray image using a model obtained as a result of machine learning, a structure including a linear structure formed of a first linear area that has been drawn by projecting anatomical structures whose X-ray transmittances are different from each other or a second linear area drawn by projecting an anatomical structure including a wall of a trachea, a wall of a bronchus, or a hair line, extracting a pixel group corresponding to a neighboring area of the structure, generating a contrast conversion expression for histogram equalization using a histogram of the pixel group, and converting luminance of each pixel value in entirety of the target chest X-ray image using the contrast conversion expression.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.