为此采用全样本对称周期延拓的方法进行边界延拓。
Therefore, full-sampled symmetric periodic extension method is adopted here in order to alleviate boundary effect.
同时提出了基于该滤波器进行数据重构时的边界延拓方法。
Boundary extension method for data reconstruction based on this filter is also proposed.
采用内嵌的边界延拓来代替标准的对称延拓，实现更加简单；
An embedded boundary extension algorithm is adopted instead of the standard symmetric extension and it's easier to implement;
图像的边界延拓我们采取周期延拓或对称延拓方式，图像压缩的数字实验验证了算法的优良性。
We use period extension or symmetry extension in image processing. Our arithmetic has perfect properties that validated by numeric experiments in image compression.
根据相应物理量的特性，在中心附近进行边界延拓，使得内点的高精度差分格式可以同样应用在网格中心附近，从而无需单侧差分格式，保持了一致的高阶精度。
Based on the characteristics of the physical variables, the boundary near centerline is extended so that a high order finite difference scheme can be utilized as at inner mesh points.
而传统的延拓方法在前后两个边界处都会产生伪边缘，并且在延拓时还需考虑滤波器系数长度的奇偶性。
But traditional border processing methods will cause false edges, and also should consider the parity of filter coefficient.
在处理边界条件时，采用了满足位移、速度、加速度条件的延拓边界条件。
In this case handling boundary conditions, the extended boundary conditions were used for supplying need of the displatment, velocity and acceleration conditions.
针对经验模态分解过程存在的边界效应问题，提出了利用AR模型进行包络延拓的边界处理算法。
For the end effect in the process of empirical mode decomposition, the envelope extension algorithm by using AR model is proposed.
针对经验模态分解过程存在的边界效应问题，提出了利用AR模型进行包络延拓的边界处理算法。
For the end effect in the process of empirical mode decomposition, the envelope extension algorithm by using AR model is proposed.
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