Title:
動きベクトル精度の選択
Document Type and Number:
Japanese Patent JP6498679
Kind Code:
B2
Abstract:
Approaches to selection of motion vector (“MV”) precision during video encoding are presented. These approaches can facilitate compression that is effective in terms of rate-distortion performance and/or computational efficiency. For example, a video encoder determines an MV precision for a unit of video from among multiple MV precisions, which include one or more fractional-sample MV precisions and integer-sample MV precision. The video encoder can identify a set of MV values having a fractional-sample MV precision, then select the MV precision for the unit based at least in part on prevalence of MV values (within the set) having a fractional part of zero. Or, the video encoder can perform rate-distortion analysis, where the rate-distortion analysis is biased towards the integer-sample MV precision. Or, the video encoder can collect information about the video and select the MV precision for the unit based at least in part on the collected information.
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Inventors:
Sullivan, Gary Jay.
Joe, You
Lee mince
Lynn
Joe, You
Lee mince
Lynn
Application Number:
JP2016545302A
Publication Date:
April 10, 2019
Filing Date:
December 19, 2014
Export Citation:
Assignee:
Microsoft Technology Licensing, LLC
International Classes:
H04N19/105; H04N19/139; H04N19/176; H04N19/523
Domestic Patent References:
| JP2006174014A | ||||
| JP6133299A | ||||
| JP11262018A | ||||
| JP11046364A |
Foreign References:
| WO2009088038A1 |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Shinsuke Onuki
Tadahiko Ito
Shinsuke Onuki