查询词典 Laplacian

Generally, a probability distribution of the prediction errors forms Laplacian distribution with zero mean.

针对贝尔模板图像的预测编码问题，设计了一种高效的自适应算术编码器。

Assessment of image quality ; parameter estimation ; JPEG ; Laplacian distribution

图像质量评价；参数估计； JPEG图像； Laplacian分布

Respective analytical and general expressions were derived according to different commonly-used PASs of uniform, cosine, Gaussian and Laplacian distribution.

针对常用的均匀分布、余弦分布、高斯分布和拉氏分布的入射波角度功率谱，分别推导了多谱勒功率谱解析式。

The AC coefficients of an image's Discrete Cosine Transform are best approximated by Laplacian distribution model. Based on this model,the blind information hiding algorithm was proposed.

基于图像离散余弦变换交流系数的拉普拉斯分布模型，提出了一种盲提取数字图像信息隐藏算法。

We used mixed Laplacian and uniform distribution method to model the real DCT residues distribution, and proposed one novel RD model for FGS encoder.

改进了基于纯Laplacian模型的RD模型，改进模型可以更加有效地表征FGS增强层码率R和失真D之间的关系。2。

When we study statistical distribution of DCT residues, we found the decreasing speed is too great in the tail of approximating distribution than the real DCT residues distribution if Laplacian distribution is used to model the DCT residues, and this will cause some mismatches in the tail of approximating model.

在采用DCT残差系数作为FGS增强层编码器的信源时，DCT残差系数的统计特性决定着FGS增强层的码率失真特性，而DCT残差系数的统计特性则是由DCT系数的统计分布特性和相应的量化过程所决定的。

Based on this idea,a new method of no-reference objectively assessing image quality is presented.The DCT coefficients of the ac component can be approximated as a Laplacian distribution.

假设图像的DCT系数是Laplacian分布，首先根据JPEG图像的DCT系数估计出图压缩前的DCT系数分布参数，并由此估算出图像压缩前、后DCT系数的均方误差值。

By spatially and temporally analyzing of the NSD which describes the normative difference of predicted SAD and minimum SAD after motion estimation, as well as the assumption that residual signal is Laplacian distribution, a modulation factor is given to realize early termination, thus a tradeoff between search speed and reconstructed video quality can be achieved.

本文定义了一个新的变量NSD－归一化SAD差值来描述预测所得的SAD值与实际搜索到的最小SAD之间的归一化关系。

The scheme uses the histogram trans fer matrix between the cover image and stego image, combining fitness bias cause d by using generalized Laplacian distribution to fit the difference histogram, t o estimate the embedded message length.

该方案使用隐写前后图像差分直方图转移矩阵结合对差分直方图广义拉普拉斯分布的拟合偏差实现对嵌入数据长度的估计。

Both the theoretical analysis and experimental results validate that the proposed Laplacian construction approach can better capture the intrinsic structure between image pixels, and can propagate the finer ingredients of an image foreground and background rather than just their labels, and thus the mattes of higher quality are obtained.

理论分析与实验结果均证实，所构造的Laplacian 能够更充分地表达图像像素间的内在结构，能以更精细的方式约束传播前、背景的成分比例而不仅仅是标号，从而获得更优的景物提取效果。

This information in the wrong hands can lead to financial and personal nightmares the likes of which few are every truly prepared to experience.

这方面的信息坏人之手可能会导致金融和个人做恶梦等，其中少数是每一个真正的准备经验。

Castle Panic is a unique, cooperative strategy game for 1 to 6 players ages 10 and up.

本游戏属于合作策略型游戏，适合1到6个玩家，年龄在10岁以上。