Title:
ビデオ符号化における中間画素高精度高速探索を実現する装置及び方法
Document Type and Number:
Japanese Patent JP4739651
Kind Code:
B2
Abstract:
Methods, devices, and systems for performing half-pixel accuracy fast search in video coding are disclosed. In one embodiment, a method for obtaining a motion vector between a first macroblock contained in a first frame and a second macroblock contained in a second frame of video image data comprises determining an integer pixel location having a lowest mean of absolute difference (“MAD”) value in the second frame relative to the first frame; identifying a first conjugate sub-pixel value in a first direction relative to the integer pixel location having a lowest first direction MAD value; identifying a second conjugate sub-pixel value in a second direction relative to the integer pixel location having a lowest second direction MAD value; and determining a motion vector representing the distance between the first macroblock and the second macroblock using the integer pixel location and a sub-integer pixel location, wherein the sub-pixel location is obtained from the first conjugate sub-pixel value and the second conjugate sub-pixel value having the lowest MAD value.
Inventors:
Kwon Nyonkyu
Application Number:
JP2002570523A
Publication Date:
August 03, 2011
Filing Date:
March 08, 2002
Export Citation:
Assignee:
Avity Audio Visual Telecommunications Corporation
International Classes:
H03M7/36; H04N5/14; H04N7/12; H04N7/26; H04N7/32
Domestic Patent References:
| JP10247242A | ||||
| JP2000253407A | ||||
| JP1233894A |
Attorney, Agent or Firm:
Makoto Hagiwara