Motion detection device and noise reduction device using that
US7903179B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 24, 2003 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | Sep 19, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention provides a motion detection apparatus that can improve a noise removal effect, can suppress the occurrence of tailing of a motion portion resulting from the increase of the noise removal effect, can increase the noise removal effect from a high electric field to a low electric field and can eliminate unnaturalness of the image for observation such as an after-image and a pasting feel resulting from the increase of the noise removal effect, and a noise reduction apparatus using the motion detection apparatus. The motion detection apparatus compares a frame difference with a threshold value, calculates the sum of the comparison result for a block including a plurality of pixels, and applies in expansion the output to several pixels in a horizontal or vertical direction to detect motion. The noise reduction apparatus utilizes this motion detection apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.