Selecting optimal image from mobile device captures
US10477095B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2016 |
| Grant date | Nov 12, 2019 |
| Priority date | — |
| Expiry date | Apr 12, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30088
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Device logic in a mobile device configures a processor to capture a series of images, such as a video, using a consumer-grade camera, and to analyze the images to determine the best-focused image, of the series of images, that captures a region of interest. The images may be of a textured surface, such as facial skin of a mobile device user. The processor sets a focal length of the camera to a fixed position for collecting the images. The processor may guide the user to position the mobile device for capturing the images, using audible cues. For each image, the processor crops the image to the region of interest, extracts luminance information, and determines one or more energy levels of the luminance via a Laplacian pyramid. The energy levels may be filtered, and then are compared to energy levels of the other images to determine the best-focused image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.