Through some examples , we think that the ultrasonic imaging method that can obtain some parameters of the crack attitude and the opening is an effective method in studying the crack of underground rock stratum 经过多项工程实践，我们认为超声成像法对钻孔孔壁扫描获得裂隙产状、开度等参数是研究地下岩层裂隙的有效方法。
When used with a non - invasive imaging method that relies on harmless light instead of x - rays , the contrast agent could help doctors diagnose disease within minutes and determine where biopsies are needed 当和非入侵成像法联合使用时使用了无害光线代替x射线，造影剂能帮助医生诊断疾病在要求活组织切片检查中起到记录和测定功能。
This paper introduces four kinds of mehtods that is used to investigate crack in underground rock stratum : borehole core method , ultrasonic imaging method , borehole television method , and borehole discharge well logging method 摘要本文介绍了地下岩层裂隙的4种勘察研究方法：钻孔岩芯法、超声成像法、钻孔电视法、钻孔流量测井法。
This paper introduced the application of nondestructive testing technology in equipment testing and the development of modem nondestructive testing technology , especially introduced the method of infrared ray imaging , ultrasonic testing technique , eddy - current method and their advantage and disadvantage , application fields were also mentioned 本文介绍了无损检测技术在装备检测中的作用，以及现代无损检测技术的发展，介绍了红外热成像法、超声检测法、涡流法和磁检测法在无损检测中的应用，并阐明了各种方法的优劣及适用领域。
Abstract : the light atom imaging method in high resolution transmission electron microscopy ( hrtem ) and its application in crystal structure analysis for a series of metastable oxides of copper , nickel and silver is described . the idea stemming from this method has been extended to show the possibility of observing surface structure in a series of rather thick films with the hrtem plan - view imaging mode 文摘:介绍了利用高分辨电子显微学进行晶体结构分析的一种方法轻原子成像法的建立过程及其在铜、镍、银等金属的初期氧化(硫化)产物结构分析中的应用.介绍了利用轻原子成像法的思想解决厚膜上观察表面结构的可能性问题的新进展
In order to acquire 3d spatial position and motion parameters of moving target , the limitation of second focus method to get the depth of target is analyzed according to perspective projection model of target centroid . then , the constraint for obtaining 3d position and motion parameters of moving target centroid from monocular image sequence is presented and proved in this paper . with this constraint , a nonlinear extended kalman filter algorithm for estimating 3d spatial position and motion parameters of moving target centroid from monocular image sequence is proposed 进一步，为获取目标的空间位置和运动参数等三维信息，在目标和成像系统都运动的情况下，根据目标质心的透视投影成像模型，首先分析了二次成像法获取目标深度信息的缺陷；然后给出了由单目序列图像获取目标质心的空间位置和运动参数的条件，并提出利用多帧单目序列图像和应用非线性扩展卡尔曼滤波算法来估计目标质心的空间位置和运动参数；最后对提出的估计方法进行了多组仿真验证，证明该方法可行有效。
