Title:
制約付きフィルタ係数を有する適応ループフィルタの方法及び装置
Document Type and Number:
Japanese Patent JP5882450
Kind Code:
B2
Abstract:
Methods and apparatuses for processing of coded video using ALF are disclosed. Embodiments according to the present invention apply ALF with constrained data range to reconstructed video data. The ALF parameters comprise a center coefficient, one or more non-center coefficients, and an offset term. As an example, the constrained data range for the center coefficient is selected from [0.0, 2.0) and [0.5, 1.5). In another example, the constrained data range for said one or more non-center coefficient is selected from [−1.0, 1.0) and [−0.5, 0.5). The constrained data range can also be applied to the offset term. For example the range of [−2D/N, (2D−1)/N) can be applied to the offset term, wherein D denotes pixel bit depth and N is a power-of-two integer. Alternatively, the constrained data range for the offset term can be [−2M,2M), wherein M is an integer.
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Inventors:
Huang, Yu-Wen
Tsai, Cheer-Yang
Chen, Chin-Ye
Hu, chi-min
Ray, Shaw-Ming
Tsai, Cheer-Yang
Chen, Chin-Ye
Hu, chi-min
Ray, Shaw-Ming
Application Number:
JP2014505505A
Publication Date:
March 09, 2016
Filing Date:
August 17, 2012
Export Citation:
Assignee:
MEDIATEK INC.
International Classes:
H04N19/82
Domestic Patent References:
| JP2012065120A |
Foreign References:
| WO2011083666A1 | ||||
| WO2007114368A1 |
Other References:
K. Ugur et al.,Efficient implementation of adaptive interpolation filters for low complexity video coding,IEEE Transactions on Consumer Electronics,2009年 2月,Vol.55, Issue 1,pp.257-263
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Shinsuke Onuki
Tadahiko Ito
Shinsuke Onuki