实验结果表明,该算法具有较好的不可感知性,可以有效抵抗线性拉伸攻击,并且对于剪切、旋转、噪声,滤波等攻击都具有较强的鲁棒性。
The results of experiment proved that this algorithm is invisible, can efficiently against linear stretching attack, and has better robustness to crop, rotation, noise or filter attack.
针对复杂背景及目标的分形特性差异,提取图像四个方向的灰度梯度,选择最小梯度大于阈值的区域进行平滑滤波,最后对分维参数进行分段线性拉伸。
Aiming at characteristic differences of background and target, four-direction gradient is extracted out and areas with large gradient are smoothed by a linear threshold filter.
随后接着拉伸,力与应变又呈现出与初始阶段相同的线性关系。
Followed by stretching, the force and strain have shown the same linear relationship in the initial stages.
最后,我们对处于有限单向预拉伸软弹性衬底上的液体薄膜由于范德华力驱动而产生的失稳进行了线性稳定性分析。
Finally, we study the instability of a thin liquid film resting on a uniformly stretched soft elastomeric substrate driven by van der Waals forces by a linear analysis.
岩石在压拉应力作用下发生的拉伸破坏可以利用应力之间的线性关系描述。
The strength criterion of rock loaded by compression stress and tensile stress can be described with linear relation of stresses.
光谱增强包括线性反差拉伸、非线性反差拉伸、直方图均衡化和直方图匹配等方法。
Spectral enhancement includes linear contrast stretch, non-linear contrast stretch, histogram equalization and histogram matching etc.
根据非线性分析的结论进行静态拉伸、动态疲劳实验。
Make static stretching and dynamic fatigue experiment according to non-linear conclusion.
准静态下纤维增强复合材料在偏轴拉伸和剪切时有明显的非线性。
Nonlinear behaviour occurs when partial tension and shear are exerted on quasi-static fibre reinforced composite.
实验数据表明:大编织角复合材料在单向拉伸作用下的破坏形式较为复杂,其应力-应变曲线呈现非线性特性。
The experiment results show that composites with large braiding Angle have complex crack forms under uniaxial tensile loading and the tensile stress-strain curves take on nonlinear characters.
该文提出的基于线性调频信号拉伸处理的杂波剔除方法,在用干涉技术进行三维成像之前剔除强背景杂波,方法简单易于工程实现。
Also, a stretch processing of LFM signal to remove the background clutter is discussed. This method is simple and easily implemented in engineering.
在正交法设计的高温拉伸实验结果的基础上,本文建立了TC6钛合金本构关系的非线性模型。
Based on the experimental results of isothermal strain rate tension test, a non-linearity model of constitutive relationships for TC6 titanium alloy was established.
研究表明,多轴应力状态下NEPE固体推进剂强度与应力相关,八面体剪应力随平均主应力的增加呈非线性增加;NEPE推进剂的破坏强度随拉伸速率的增加而提高。
The results show that strength of NEPE solid propellant under multi-axis stress state is related to strain; octahedral shear stress nonlinearly increases with the average main stress.
采用双轴拉伸试验方法测定了PVC膜材的广义泊松比,验证了广义泊松比的非线性特征。
The generalized Poisson's ratio is measured using the results of biaxial tensile tests of PVC membrane materials, which verifies the nonlinear characteristics of generalized Poisson's ratio.
多次重复拉伸使其弹性模量降低并呈现非线性的变化趋势。
Multiple tensions lowed down the elastic modulus of the alloy and exhibited a non-linear relationship with strain.
根据光纤中的布里渊散射附加频移与光纤所受的拉伸应变有关的特性,推导了附加频移与应变间的线性关系。
Based on the phenomenon of the frequency shift in Brilluion back-scattering light related to the strain of the optical fiber, a new strain sensing scheme is proposed.
根据光纤中的布里渊散射附加频移与光纤所受的拉伸应变有关的特性,推导了附加频移与应变间的线性关系。
Based on the phenomenon of the frequency shift in Brilluion back-scattering light related to the strain of the optical fiber, a new strain sensing scheme is proposed.
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