System for depth data filtering based on amplitude energy values
US10242454B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 25, 2017 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Feb 15, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10028
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electronic device includes a time of flight (ToF) camera and one or more processors. The ToF camera captures raw depth images. The processors determine a depth frame and an amplitude frame from the raw depth images. The depth frame comprises an array of pixels, each pixel having a depth value. The amplitude frame comprises an array of pixels, each pixel having an amplitude energy value. The processors determine a first energy threshold value based on the amplitude energy values of the array of pixels of the amplitude frame and determine, for the depth value of a first pixel of the depth frame, a confidence value representing a corresponding validity of a depth represented by the depth value, based on a comparison of the amplitude energy value of a corresponding first pixel of the amplitude frame to the first energy threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.