De-blocking filtering method of image data and de-blocking filter
US8184713B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2007 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Mar 22, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/527
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A deblocking filtering method for image data and a deblocking filter. According to the deblocking filtering method for image data and the deblocking filter, when computation of Boundary Strength (BS) values for each boundary based on one of horizontal and vertical directions from input image data is completed, it is possible to estimate BS values for each boundary based on a direction different from the currently selected direction by using the computed BS values. Further, deblocking filtering is performed based on corresponding directions according to the estimated values, so that the deblocking filtering can be completely performed with only a BS value of boundaries based on a selected one direction. Consequently, a BS value computation process necessarily required in a deblocking filtering process can be considerably reduced, and thus time required in the operation process of a deblocking filter can also be considerably reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.