查询词典 convolution

The multiples will be predicted with the spatial convolution between the original record and the initially estimated value of primary reflection or the seismic record itself. The multiples were scaled using the inverse of the surface operator obtained from the inversion by using the least - squares criterion.

首先通过原始记录与一次波的初始估计值的空间褶积预测多次波，再用最小能量准则反演求得的表层算子的逆来标定多次波，最后从原始记录中将多次波消除。

Another drawback of these techniques is that they need numerical pre-processing like inverse fourier transformation or convolution to compute the field induced time-domain sources.

这些技术的另外一个不利点是他们数字的预先处理相似的倒转 fourier 变形或回旋计算领域感应时间-领域来源。

We can obtain the n-dimensional inversion reconstruction formula of the image convolution-back projection by one-dimensional wavelet transform on Radon transform.

在医学上，问题的一种重要方式是从多个X射线投影值获得人体内部的密度分布，这个过程被称为计算机断层扫描。

But Janus is rather absent-minded, and he, being lost in thoughts about his convolution problem, forgot about the weak fuse next day.

但是Janus是相当丢三落四的，并且他，丢失在关于他的卷积问题的想法，次日忘掉了微弱的保险丝。

Based on the first linearized Boussinesq equation, analytical solution of the transient groundwater model, which is used for describing phreatic flow in a semi-infinite aquifer bounded by a linear stream and subjected to time-dependent vertical seepage, is derived out by Laplace transform and the convolution integral.

在河渠边界控制下的半无限含水层中，对时变垂向入渗影响下的潜水非稳定渗流模型，利用Boussinesq第一线性化方法，通过Laplace变换并结合卷积原理，导出模型的解析解。

To enhance computation efficiency and coverage of streamlines of fast line integral convolution, an improved algorithm of fast LIC with Sobol sequence was presented.

为提高快速线积分卷积法的计算效率和流线的覆盖率，提出了一种改进的基于Sobol序列的快速线积分卷积法。

This paper proposes an extension to the existing automatic pencil drawing generation technique based on Line Integral Convolution.

提出了一种新的基于线性卷积积分自动铅笔画生成方法。

Aimed at the needs of virtualized relationship in virtual environment, we introduce non-photorealistic rendering into virtual reality and presented a novel algorithm for virtualized relationship generation in image based virtual environment based on line integral convolution.

针对基于图像的虚拟场景虚化关联的需要，将非真实感绘制技术引入虚拟场景中，提出了一种基于线积分卷积的场景虚化关联生成方法。

Firstly,the color image is sharpen by Unsharp Mask to extract detail information,and color scaling is used to strength contrast degree.Secondly,stroke direction is generated by the method of vector field.Finally results of the pencil-drawing are gained by the line integral convolution algorithm.

首先对用户输入的图像进行Unsharp Mask锐化提取细节信息，并进行颜色放大处理以增强对比度，然后采用基于点的向量场技术生成笔画方向，最后应用线积分卷积得到具有素描风格的结果图像。

In order to create a virtual flow analysis system, three algorithms (Marching Cube, LIC——Line Integral Convolution,and IBFV—— Image Based Flow Visualization ) were improved in their real time, objective and realistic aspect.

首先研究了CFD计算所必须的、也是耗费人工最多的网格生成技术，及其与CAD系统的集成。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。