Rolling shutter reduction based on motion sensors
US8786716B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 2011 |
| Grant date | Jul 22, 2014 |
| Priority date | — |
| Expiry date | Sep 26, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/689
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This disclosure pertains to devices, methods, and computer readable media for reducing rolling shutter distortion effects in captured video frames based on timestamped positional information obtained from positional sensors in communication with an image capture device. In general, rolling shutter reduction techniques are described for generating and applying image segment-specific perspective transforms to already-captured segments (i.e., portions) of images in a video sequence, so as to counter or compensate for unwanted distortions that occurred during the read out of the image sensor. Such distortions may be due to, for example, the use of CMOS sensors combined with the rapid movement of the image capture device. In contrast to the prior art, rolling shutter reduction techniques described herein may be applied to captured images in real-time or near real-time using positional sensor information and without intensive image processing that would require an analysis of the content of the underlying image data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.