影

This paper has done some studies on arithmetic for this system: presents a method of detecting and tracing moving objects in real time, and analyses their height using the restriction of vanishing line s, vanishing points and cross-ratio in perspective geometry.

文中为实现这种智能视觉监控系统做了一些算法上的研究工作：实现了对运动物体进行实时检测和追踪，并利用透视几何中的消影点、消影线以及交比的约束方法对运动物体高度进行了分析。

Firstly, need some geometric information which include the vanishing line of the ground plane, a vanishing point for the vertical direction and a known vertical height.

该方法首先根据单幅图像提供的一些几何信息———地平面(或者是与地平面平行的平面)上两对不同方向的平行线和竖直方向的一对平行线———在图像上求得地平面的消影线和竖直方向的消影点；然后，用一个已知的参考高度来确定高度测量方程中的比例因子α；最后只要输入待测高度的端点坐标就可以获得该高度的实际值。

There are two components to the reconstruction process. First, the camera calibration and metric structure of each plane is computed, that is to calibrate a square pixel camera from three vanishing points of orthogonal directions and metric rectify each plane by computing the imaged circular points and the vanishing line.

首先 ，相机定标和计算每个平面的度量信息，即先基于 3组互相垂直方向的影灭点，对方形像素相机标定，再利用影灭线和圆环点像，对每个平面度量校正；然后考虑每个校正平面的尺度因子和非正交平面间的相对面向，从而将所有校正后的平面缝合起来。

Firstly,the relation between the attitude and the vanishing point of runway was analyzed.

通过分析跑道消影点与无人机位姿的关系，得到消影点的图像坐标与姿态角的关系。

As we know,the inverse projection of vanishing point v is a radial whose direction is d.

人们知道消影点v反向投影成方向为d的射线，消影点v仅依赖于该射线的方向d，而与空间点的具体位置无关。

Groups of 27 8- by 8-pixel compressed blocks are gathered into macroblocks for recording. VAUX data includes recording date and time, lens aperture, shutter speed, color balance, and other camera setting data.

有27组8乘8像素的压缩区块聚合成大区块来纪录在影带上，VAUX资料则是包括录影时的日期和时间，镜头光圈，快门速度，色彩平衡，和其他摄影机设定的资料。

The DGGO had centrally distributed with lobular central node, acinose node or mass. 26 cases were the diseases with abnormity of extravascular fluid overload, including 21 cases' pulmonary edema and 5 cases' contusion of lung. The DGGO had distributed pulmonary pendulous region or relative pendulous region.

以肺内血管外体液量增加为主的疾病有肺水肿21例及肺挫伤5例，肺水肿性磨玻璃影具有沿下垂部分布的趋势，可伴有心影增大及胸腔积液；而肺挫伤性磨玻璃影与外伤部位相关，且在外伤区肺内也具有沿下垂部分布的趋势。

Cases were the diseases with two or super-two kings of abnormity, including 25 cases' chronic obstructive pulmonary disease, 7 cases' pulmonary alveolar proteinosis and 5 cases' viral pneumonia. The DGGO had presented mosaic-fashion's shadow or geographic change or crazing paving pattern, or the DGGO had centrally distributed with lobular central node, acinose node and interstitial fibrosis. Conclusion DGGO may be seen in various diseases.

两种因素或两种以上因素异常的疾病有慢性阻塞性肺病25例、肺泡蛋白沉积症7例及病毒性肺炎5例，慢性阻塞性肺病为通气-血流障碍所致，其磨玻璃影与低密度区形成马赛克样改变，常伴有桶状胸；而肺泡蛋白沉积症及病毒性肺炎同时具有气腔和固有肺结构异常，其磨玻璃影是间质性病变与实质性病变共同作用的结果。

Results: 24 cases of SAHLC produced the following CT manifestations: widening of anterior longitudinal cistern, sometime SAH visible in callosal sulcus or/and cingulate sulcus, so-called "callosal sulcus sign"; feather's configuration of longtitudinal cistern, partial disappearance of contiguous sulcus; widening of posterior longitudinal cistern with a coarse borderline.

结果：24例少量蛛网膜下腔出血表现为前纵裂池高密度影长度增加，8例伴有胼胝体沟征；纵裂池呈局限性羽毛状高密度影，邻近脑沟消失；后纵裂池密度增高增粗，边缘毛糙；复查显示上述征象均消失。

Results The findings of CT were: on plain scan, there was mix density inside the liver with obscure boundary, the liver and spleen were surrounded by liquid in five cases. Inhomogeneous enhanced tumor tissues were demonstrated at arterial phase. Capsula and cleft were seen in one case, and five with mix density. Embolus in portal vein was noted in two.

结果 平扫肝内呈混杂密度影，边界欠清晰，5例肝、脾周见液体密度影；增强扫描动脉期边缘可见不均匀强化，1例肿瘤可见包膜及裂口，5例密度不均匀，内可见多条裂隙；静脉期2例可见门静脉癌栓；造影剂渗漏均不明显。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。