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shifted block
相关语句
  转换块
     The algorithm introduces the definition of homogeneous blocks and the measurement with an alterable threshold for judging whether a shifted block is homogeneous.
     算法首先引入均匀块的定义,并给出一种阈值可变的判断转换块是否均匀块的标准.
短句来源
     For Human Visual System has the masking characteristic,a blocking-artifact visible function is introduced. The threshold of the potential energy function is adaptively adjusted by edge information of the shifted block so as to reduce the blocking artifacts as much as possible and protect image edge information.
     利用人类视觉系统对块效应有掩盖性的特点引入一个块效应可见度函数,根据转换块的边缘信息自适应调整势能函数的阈值,从而尽可能地消除块效应并保护图像的边缘信息。
短句来源
  相似匹配句对
     Block and Z.
     B lock和Z.
短句来源
     Gypsum block
     石膏砌块
短句来源
     The algorithm introduces the definition of homogeneous blocks and the measurement with an alterable threshold for judging whether a shifted block is homogeneous.
     算法首先引入均匀块的定义,并给出一种阈值可变的判断转换块是否均匀块的标准.
短句来源
     Enumeration of shifted plane partitions
     移动平面分拆的计数
短句来源
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  shifted block
A shifted block Lanczos algorithm for solving sparse symmetric generalized eigenproblems.
      
A shifted block is an 8 8 block with 0,1 or 2 displacement in each direction.
      


A Channel routing method for building block layout is presented in this paper,aim at solving the problem that shifting blocks may result in the change of channel graph and then the failure of routing.Given a channel graph,if there is no cyclic channel constraint in it,the method can complete routing process according to the oringinal channel graph however the blocks shift.The method has been implemented in our layout GAD system,and some examples will be illustrated in the end of the paper....

A Channel routing method for building block layout is presented in this paper,aim at solving the problem that shifting blocks may result in the change of channel graph and then the failure of routing.Given a channel graph,if there is no cyclic channel constraint in it,the method can complete routing process according to the oringinal channel graph however the blocks shift.The method has been implemented in our layout GAD system,and some examples will be illustrated in the end of the paper.

在 VLSI 积木块布图设计模式中,模块的移动会引起通道图发生变化,影响布线的进行。本文给出了一种布线方法,用此方法可保证:任给一个通道图,只要其 T 形约束图中无约束环,无论模块在布线过程中怎样平行移动,均可按照通道图正常布线。此方法已成功地应用在我们研制的 VLSI 版图 CAD 系统中。本文从理论上给予证明,并给出应用实例。

The block-based DCT compression methods often cause blocking artifacts due to low bit rates.In order to not only reduce blocking artifacts,but also preserve edges and textures adequately,a new blocking artifacts reduction algorithm is proposed in this paper.The algorithm introduces the definition of homogeneous blocks and the measurement with an alterable threshold for judging whether a shifted block is homogeneous.For each row(or column) of the homogeneous blocks,an adaptive Sigmoid function is...

The block-based DCT compression methods often cause blocking artifacts due to low bit rates.In order to not only reduce blocking artifacts,but also preserve edges and textures adequately,a new blocking artifacts reduction algorithm is proposed in this paper.The algorithm introduces the definition of homogeneous blocks and the measurement with an alterable threshold for judging whether a shifted block is homogeneous.For each row(or column) of the homogeneous blocks,an adaptive Sigmoid function is used to replace the step function to reduce blocking artifacts.For the inhomogeneous blocks,Sigma filter is used to smooth the blocks.Simulation results show that the proposed algorithm can outperform the algorithms proposed by Liu(2002) and Luo(2003).

基于块DCT图像压缩方法通常会因比特率低而导致块效应.本文提出一种新的块效应消除算法,目的是既能消除块效应又能充分保护图像的边缘和纹理.算法首先引入均匀块的定义,并给出一种阈值可变的判断转换块是否均匀块的标准.对均匀块的每一行(或列)分别使用自适应的Sigmoid函数代替阶梯函数,以消除块效应;而对非均匀块使用Sigma滤波器进行平滑.仿真结果表明,本文的算法相比Liu(2002)和Luo(2003)提出的相应算法,有更良好的性能.

The reason that Block Discrete Cosine Transform(BDCT) brings blocking artifacts is analyzed in this paper.An efficiently adaptive de-blocking algorithm is proposed based on maximum a posteriori estimation of Markov Random Field(MRF-MAP) Frame.For Human Visual System has the masking characteristic,a blocking-artifact visible function is introduced.The threshold of the potential energy function is adaptively adjusted by edge information of the shifted block so as to reduce the blocking artifacts as much...

The reason that Block Discrete Cosine Transform(BDCT) brings blocking artifacts is analyzed in this paper.An efficiently adaptive de-blocking algorithm is proposed based on maximum a posteriori estimation of Markov Random Field(MRF-MAP) Frame.For Human Visual System has the masking characteristic,a blocking-artifact visible function is introduced.The threshold of the potential energy function is adaptively adjusted by edge information of the shifted block so as to reduce the blocking artifacts as much as possible and protect image edge information.The simulation results prove the efficiency of the proposed method.

分析了块离散余弦变换(BDCT)图像编码的块效应产生原因,基于马尔可夫随机场最大后验估计(MRF-MAP)框架提出了一种有效的自适应去块效应算法。利用人类视觉系统对块效应有掩盖性的特点引入一个块效应可见度函数,根据转换块的边缘信息自适应调整势能函数的阈值,从而尽可能地消除块效应并保护图像的边缘信息。仿真结果表明了该算法的有效性。

 
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