提供一种块效应去除系统和方法。
对块匹配算法产生的块效应进行了研究。
所以在这两款标准中都采用环路滤波作为后处理技术来去除块效应。
So they adopt a filter in motion-compensation loop as a post-processing to remove blocking artifacts.
量化步长越大，块效应越明显，极大地影响图像的视觉质量和压缩效率。
The bigger the quantification step, the more obvious the blocking effect in visual effect and compression efficiency.
实验表明计算时间有所减少，峰值信噪比有所提高，且图象无明显块效应。
The experience shows that computing time is reduced; PSNR is raised and there is no clearly block effecting.
同时，考虑到前景和背景的差异以及块效应，提出了宏块级量化的调整方法。
Moreover, we present the adjust method for macroblock quantization parameters considering of the difference of foreground and background and blocking effects.
块效应是视频编码中影响编码质量的一个重要问题，特别在低码率情况下尤为明显。
Block artifact is one of major causations which reduce the quality of pictures in video coding, especially at the time of low bit rate.
低比特率时，基于块离散余弦变换(BDCT)的图像压缩方法常常会引起块效应。
At low bit rates, the block Discrete Cosine Transform (BDCT) compression methods often give rise to blocking artifacts.
当压缩比较高时，图像子块边缘出现不连续的现象，这种不连续在视觉上表现为块效应。
When the compression ratio is high, there is uncontinuous on the image sub-block edges, such discontinuities effects on the performance of the block in the visual.
去方块滤波是一种用来去除低码率情况下的每个宏块的块效应，提高了解码图像的外观。
The deblocking filter is applied to every macroblock to reduce blocking distortion at low rate, which improves the appearance of the decoded images.
采用了基于特征窗口匹配的网格节点运动估计方法，有效地避免了块匹配法产生的块效应。
A mesh node motion estimation method based on feature window matching was presented to overcome block artifacts produced by block matching.
文章在阐述H . 264各个关键技术及其设计的时候，着重介绍了去块效应滤波部分。
While the article stated in the various key technologies in H. 264 design, highlighted pieces to deblocking filter.
然后将待检测图像重叠分块并计算其相应块效应测度，利用块效应不一致性检测篡改区域。
Divide the composite image into overlapped blocks and calculate the measure of each block. The forged area can be effectively exposed by checking inconsistencies of blocking artifact.
对去除块效应的交叠正交变换进行深入研究，给出交叠正交变换的理论分析，并进行实验仿真。
The detail analysis of lapped orthogonal transform, which can reduce block effect, is presented. Theory analysis of lapped orthogonal transform is given, and the experiment is done.
该算法改进了在DC系数中大都为非盲水印的缺点，同时避免了DC系数改变过大引起的块效应。
This algorithm improves the blemish which is not blind, at the same time it keeps from the block effect which brought in by changing too much of DC coefficients.
方块效应是基于块的混合视频编码算法产生的重要特征失真，严重影响了压缩后视频的主观质量。
Blocking artifacts are serious artifacts caused by block-based hybrid video coding, and significantly impair the subjective quality of the compressed video.
许多文献提出了去除块效应的方法，但是如何评价这些方法的有效性，需要有一定的评价标准来衡量。
Though many methods have been proposed for removing block effect, the standard to evaluate their effectiveness has to be required.
第三种基于快速检测的块效应消除（BARFD）算法，着重于给出一种简便快捷的检测边缘块的途径。
The third one is an algorithm based on fast detection (BARFD), whichemphasizes a convenient and fast way to detect the edge blocks.
块离散余弦变换在低比特率时其恢复图像的块边界上会出现明显可见的方块效应，从而降低了图像的视觉质量。
The block-Based Discrete Cosine Transform (BDCT) suffers from visible blocking artifacts between adjacent image blocks at low bit rates, which reduces the image visual quality.
本文首次在水印算法中采用了LOT以代替传统的离散余弦变换(DCT)，从而有效地避免了DCT的块效应。
LOT is first adopted in the watermarking algorithm instead of DCT, which greatly reduces the blocking effects.
针对一种抗JPEG编码的密写方法，可由图象分块特性定义一个块效应参数作为统计检验量，并设定阚值从而判断秘密信息是否存在。
A block-based parameter can be defined and a threshold value chosen to detect the blockiness introduced by an anti-JPEG steganographic embedding.
为了减少低比特率时块离散余弦变换(BDCT)在块边界所出现的明显可见的方块效应，提出了一种新的DCT域的去块效应消除算法。
A major drawback of block discrete cosine transform (BDCT) is that the decoded images, especially at very low bit rates, exhibit highly noticeable blocking artifacts near the block boundaries.
针对离散余弦变换基于块（DCT）图像压缩的方法通常因比特率低而导致块效应，结合人类视觉系统（HVS）和局部熵分析，提出一种新的去块效应算法。
The block-based DCT compression methods often cause blocking artifacts due to low bit rates. A new algorithm is proposed which combines HVS and entropy analysis.
温室效应决不是气象学家踢到的第一块板。
The greenhouse problem was not the first time climatologists hit this wall.
在安德·里森看来，Skype是一块璞玉，一家有史以来少数能产生网络效应的科技公司之一。
To Andreessen, Skype was a potential gem — one of the few great network-effect tech companies ever created.
研究了基于基8算法的块浮点FFT处理器的有限字长效应问题，提出了一种基于理论统计分析的静态模型。
This paper discusses issues of finite word-length effects in the block floating-point radix-8 FFT processor and presents a novel static model based on statistical analysis.
利用时空掩盖效应计算视频帧的复杂度与宏块的感知度。
The spatial and temporal masking effect is used to compute the frame complexity and the MB focus.
利用时空掩盖效应计算视频帧的复杂度与宏块的感知度。
The spatial and temporal masking effect is used to compute the frame complexity and the MB focus.
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