However , the pose and illumination variation is still very challenging for face recognition . our work concentrates on the 3d morphable model and recognizing faces from different poses 但非理想成像条件下(如光照条件不理想,人脸的姿态发生变化等)的人脸识别技术还远未成熟,有许多科学问题需要研究。
Given the abilities of generating all kinds of ideal and not ideal signals , it has been widely used in the domains of communication , radar , navigation and astronavigation 它可以产生各种理想及非理想的波形信号,是电子工程师、生产线以及教学科研的重要测试设备,广泛用于通信、雷达、导航、宇航等领域。
The equilibrium model is characterized by the murphree efficiency or height of equivalent to a theoretical plate ( hetp ) value since a tray is generally not working like an equilibrium stage 实际精馏过程往往很难真正达到汽液平衡状态，因此murphree板效率和等板高度概念常用于修正平衡模型计算中的非理想特性。
In practical design , not only nonideal factors from noise , mismatch , offset etc . are taken into consideration , but also the desired sub _ adc performance is achieved with reduced power dissipation 在具体电路设计中,不仅充分考虑了噪声、失调和失配等非理想因素,而且在实现系统对子adc的指标限制前提下,降低了功耗。
The optimal transmission strategy of a single user multiple - input multiple - output ( mimo ) wireless communication system which the transmitter has only imperfect feedback of channel state information ( csi ) is studied 摘要研究了发射端只有非理想信道状态信息反馈的单用户多输入多输出( mimo )无线通信系统的最优发送策略。
It indicates that a correct mass relation of a meson nonet ( especially for the non ideal - mixing meson nonet ) should incorporate the effect of the flavor - dependent quarkonia annihilation 这表明，一个正确反映介子九重态（特别是非理想混合的介子九重态）成员间质量关系的公式，应该包含夸克偶素间的湮灭跟味道有关这种修正。
Any measurement is subject to imperfections ; some of these are due to random effects , such as short - term fluctuations in temperature , humidity and air - pressure or variability in the performance of the measurer 任何测量都是非理想性的，部分是因为温度、湿度和气压或者测量者的操作变动性等因素在短期内的波动等这些随机效应。
The result of simulation for the closed - loop system in the matlab illustrates that the system can provide unity power factor not only in ideal condition but also in the case of errors in missing of some current 研究表明系统在理想情况下能实现单位功率因数而且在某相电流误差信号丢失的非理想情况下仍然能实现单位功率因数控制。
In this thesis , the features of mmw phased array radar are discussed , and the effects of the non - ideal factors of the optically controlling mmw phased array radar are analyzed in theoretically 本文重点论述了毫米波相控阵雷达的特点,理论分析了毫米波光控相控阵系统中的非理想因素对系统性能的影响,并给出可实现的消除影响的方法。
A final " imperfection " of resistors is an inconvenience but cannot properly be regarded as an imperfection as it is a fundamental property of all resistors : thermal or johnson noise 关于电阻的非理想特性，最后一项内容是热噪声，也称为约翰逊噪声。其实这并不能称为完全意义上的非理想特性，它是电阻的固有性质，任何电阻器都不例外。
