本文研究了基于最大互信息和图象梯度组合的人脑CT与MRI多模医学图象配准算法。
This paper aims to research registration of CT and MRI images of caput based on gradient and normalized maximization mutual information method.
这种利用多模腔的设计也具有准椭圆传输函数特性。
The new designs utilize over-moded cavities and also exhibit pseudo-elliptic transfer functions.
近年来基于最大互信息法的多模医学图象配准已成为医学图象处理领域的热点。
In these years, multimodality medical image registration based on maximization of mutual information has been popular in medical image processing fields.
基于这两种控制律，采用准滑模控制方法对地震作用下建筑结构的振动控制问题进行了研究。
Therefore we propose new quasi-sliding mode control laws that can not only reduce seismological response but can also avoid undue chattering effect.
在常规的准滑模变结构控制中引入模糊控制，利用模糊控制器来动态调整滑模边界层的厚度。
A fuzzy control is combined with the conventional quasi-sliding mode control, and the fuzzy controller is used to adjust the thickness of boundary layer dynamically.
通过研究二维非增益随机介质中光波的局域化，确定了准态模的空间分布和频谱特征。
The spatial profile and the spectra characteristics of quasi-state modes are determined by analyzing the localized processes of optical light beams in random media without gain.
自聚焦透镜与多模光纤的折射率分布都遵从平方律分布，基于这个事实，进行了以多模光纤生产工艺制造微型准直透镜的研究和设计。
Based on this fact, the research and design of micro align lens which is fabricated by means of multimode fiber fabrication techniques is carried out.
本文将准导模的概念用于等效电流法来求取单模光纤的模耦合损耗。
The concept of quasi-guided mode is applied in equivalent current method to calculate the loss of a single mode fiber caused by mode conversion.
研究了离散变结构控制问题，详细叙述了离散时间系统的准滑模、理想滑模、非理想滑模与准滑模带的概念；
The design of variable structure control for discrete time systems is discussed. The concepts of discrete time systems are told in detail, including quasi-sliding mode and quasi-sliding sector.
但是，不同的准周期结构，局域模的性质不一样。
But different quasi- periodical structures have different localized resonant modes.
就同一种准周期结构的系统而言，系统的厚度和入射波的入射角度对滤波频率以及共振模的品质因子都有重要的影响。
However, the thickness of the system and the Angle of incident waves also influence the frequency of wave-guide and the quality factor of resonant modes.
采用准滑模控制方法，设计车道保持变结构控制规律；
By using the method of quasi-sliding mode, the variable structure control law for lane keeping was designed.
采用消失模铸造工艺，经准铸态贝氏体工艺处理后，得到了贝氏体组织。
By controlling knock-out time, bainite structure was obtained in the as-cast low-carbon ductile iron cast with EPC process.
准TEM模假设对弱导光波导是一个相当精确的近似。
These characteristic equations are not only simple and understandable but also quite accurate for weakly guiding optical waveguides.
准TEM模假设对弱导光波导是一个相当精确的近似。
These characteristic equations are not only simple and understandable but also quite accurate for weakly guiding optical waveguides.
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