Method for measuring objects in digestive tract based on imaging system
US11538151B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 27, 2020 |
| Grant date | Dec 27, 2022 |
| Priority date | — |
| Expiry date | Dec 18, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30092
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for measuring objects in a digestive tract based on an imaging system is provided. The imaging system captures a detection image in the measurement stage. The depth distance zi from a target point P′ to a board is calculated, a correction factor is obtained according to the predicted brightness g−1(zi) of a reference point P in the detection image. The depth image z(x, y) from the actual position of each pixel to the board is calibrated by the correction factor. The scale r of each pixel is calculated according to the depth image z(x, y). The actual two-dimensional coordinates Si′ of each pixel are calculated by the scale r, and the actual three-dimensional coordinates (Si′, z(x, y)) of each pixel are obtained. The distance between any two pixels in the detection image or the area within any range are calculated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.