Image processing apparatus, method, and computer program with pixel brightness-change detection and value correction
US8150201B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2008 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Jan 6, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/589
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing apparatus includes the following elements. An image input unit receives a long-time exposure image and a short-time exposure image. An image analysis unit detects a brightness-change pixel in which a brightness change has occurred during a photographic period on the basis of analysis of pixel values in the long-time exposure image and the short-time exposure image. A pixel value correction unit corrects a pixel value of the detected brightness-change pixel. In the pixel value correction unit, a combined image generator selectively combines pixel values in the long-time exposure image and pixel values in the short-time exposure image to generate a combined image; an intermediate image generator generates a blurred image of the combined image; and an output image generator determines a pixel value of the detected brightness-change pixel using a pixel value of a corresponding pixel in each of the combined image and the blurred image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.