Colecciones nacionales e internacionales de patentes

1. (WO2011125445) IMAGE FILTER DEVICE, CODING DEVICE, AND DECODING DEVICE

Pub. No.:    WO/2011/125445    International Application No.:    PCT/JP2011/056305
Publication Date: 13-oct-2011 International Filing Date: 16-mar-2011
IPC: H04N 7/26
Applicants: SHARP KABUSHIKI KAISHA
シャープ株式会社
IKAI, Tomohiro
猪飼 知宏
Inventors: IKAI, Tomohiro
猪飼 知宏
Title: IMAGE FILTER DEVICE, CODING DEVICE, AND DECODING DEVICE
Abstract:
In a deblocked image (#50), when a filter coefficient vector is set for an adjacent region that is adjacent to an object region whereupon a filter coefficient vector is set, an adaptive filter (300) identifies the filter coefficient vectors that are set for the object region and the adjacent region, whereas, when the filter coefficient vector is not set for the adjacent region, the adaptive filter (300) identifies the filter coefficient vector that is set for the object region and a predetermined filter coefficient vector. The adaptive filter (300) computes a post-adjustment filter coefficient vector by taking the average of the two identified filter coefficient vectors in either instance. If the distance from the boundary between the object region and the adjacent region to an object pixel in the object region is less than or equal to a prescribed distance, a pixel value for output image data (#300) of the object pixel is derived using the post-adjustment filter coefficient vector computed by a filter coefficient vector computation means.