径向变形 meaning in Chinese
radial deformation
Examples
- Digital image processing technique for measurement of the radial deformation of specimen in triaxial test
三轴试验土样径向变形的计算机图像测量 - Compared with the traditional method , the digital image processing method has many advantages in measuring the deformation of soil specimen in triaxial test , such as higher accuracy , non - contact measuring process , and undisturbed specimen . it is valid to measure the deformation in large scale . it can select the section of specimen freely to measure the axial and radial deformation directly
应用数字图像测量技术量测三轴试验试样的变形，有许多传统测量方法不能比拟的优越性：较高的变形测量精度；非接触式变形测量，不扰动试样，不干扰试样的变形；适用于三轴土样的大变形测量；可以任意选择测量断面，实现三轴试样轴向变形和径向变形的直接测量；可以在试样变形测量的同时用图片的形式记录三轴试验的全过程，便于试验结束以后对试样变形的重新分析和研究。 - In the application of mini - micro - robot visual perception , there is a need for fish - eye lenses for capturing wide field of view for navigation . though fish - eye lenses provide a wide field of view ( 180 ) , they introduce significant distortion in images and the acquired images are quite warped , which makes conventional camera calibration algorithms no longer work well . this paper presents an accurate calibration framework for fish - eye lens ( a high distortion lens ) camera stereo vision system . the accurate calibration model is formulated with radial distortion , decentering distortion and thin prism distortion based on the fisheye deformation model . using fish - eye and non - linear camera model , the author employs levenberg - marquardt method to realize precise non - linear calibration for wide - view - scene dense depth image recovery
鱼眼镜头成像立体视觉系统在微小型机器人视觉导航和近距离大视场物体识别与定位中有着广泛的应用.尽管鱼眼镜头摄像机具有很大的视场角(接近180 ) ，但同时也引入严重的图像变形，常规的摄像机标定方法无法使用.该文提出一种标定鱼眼镜头摄像机立体视觉系统的方法.在鱼眼镜头变形模型的基础上，通过考虑鱼眼镜头成像的径向变形、偏心变形和薄棱镜变形，建立了鱼眼镜头成像的精确成像模型,然后，利用非线性迭代算法，精确求解摄像机外部参数、内部参数.实验表明，使用该方法得到的立体视觉系统参数满足精确恢复大场景稠密深度图的要求 - Secondly , on the basis of the theory of rayleigh - love bar , the longitudinal vibration of a large diameter end - bearing pile in saturated soil is investigated considering transverse inertial effect . the vibration of pile considering transverse inertial effect is different from the one not considering this effect significantly at a smaller slenderness
2 、根据rayleigh - love杆理论，计及桩身的径向变形，研究了饱和土中考虑横向惯性效应的大直径嵌岩桩纵向耦合振动理论，分别在考虑与不考虑横向惯性效应下，比较了大直径桩纵向振动的特性。 - All the results of axial and radial deformation measurement by digital image processing technique and those by traditional method are compared . the differences of the soil parameters on duncan and chang ' s nonlinear model made by these two methods are analyzed . finally , a compress test results and fem results are provided to show the reasonability and veracity of digital image processing technique to study the soil stress - strain characteristic in triaxial test
( 2 )三轴试验土样局部变形研究：首先定量比较了三轴试样沿高度方向不同位置的局部变形(局部径向变形与局部轴向变形)大小，分析了三轴试样局部变形的特点和影响因素；然后把三轴试样数字图像测量结果与传统测量结果进行比较，以邓肯张非线性模型为例进行了模型参数的整理，分析了两种不问测量方法引起的参数差异：最后用原型压缩试验对比有限元数值计算结果，验证了数字图像测量方法得到的三轴试验土体应力应变参数的合理性和准确性。