Second, we used to find out the intersect lines of shell and nozzles by the means of projection transform.
二是以往通常用投影转换的方法来求得筒体和接管的相贯线，这种方法放样困难、繁复且精度不高。
In order to satisfy the different needs of submarine navigated performance in the different navigation steps, the fast terrain matching algorithm based on radial projection transform is presented.
根据多波束声纳地形匹配导航中不同阶段对匹配性能的不同要求，提出了基于径向投影变换的快速地形匹配方法。
As a result, with phase unwrapping technique based on Fourier transform, any cross section projection could conveniently be worked out from the Moiré deflectogram of rocket exhausted plumes.
结果发现，根据火箭喷焰的莫尔条纹，采用傅里叶变换相位展开技术，可以方便地提取任意截面的投影信息。
In the compilation of land use planning map at county level, it is used to transform one region to the adjacent one to display the more projection zones.
在县级土地利用规划用图中，常涉及到跨投影带的地图拼接问题，一般使用邻带转换法实现跨带区域的地图显示，该方法在实际应用中存在面积和角度变形相对较大的不足。
The Radon transform of the projection is calculated in the filtered process of exact reconstruction, Siddon and Simpson integral are used to sample the pixels to get the projection.
在精确重建滤波过程中，需要计算投影数据的雷当变换，本文采用普通累加法和辛普森直线积分法来完成对象素网格的采样。
Binary image is filtered by utilizing morphological filter. Then, using the information of stone shadow and projection transform, detection and position of stone is utilized in part environment.
在获取分割后的二值化图像中，采用了形态学滤波算子进行去噪，然后利用二值图像投影变换，并参考石块底部阴影位置信息，辅助完成对部分场景下的石块识别和定位。
Then, the basic principles of drawing 3d graph by computer are discussed, particularly explained the fundamental theory of coordinate transform, projection transform and light model.
对三维图形计算机显示的基本原理进行了讨论，详细介绍了坐标系变换、投影变换和明暗处理及光照模型的基本原理。
Utilizing the extended library provided by ERDAS IMAGINE, and by using the self-defined spheroid IAG75 the projection transform of raster data is achieved successfully.
此方法利用ERDASIMAGINE的扩展库自定义新的投影椭球，用自定义的投影椭球对栅格数据成功地进行了投影变换。
Relations of coordinate transform among camera coordinate system, projector coordinate system and world coordinate system are derived based on perspective projection models for camera and projector.
通过摄像机和投影仪的透视投影模型，推导了摄像机坐标系、投影仪坐标系和世界坐标系之间的坐标变化关系。
World coordinate that had undergone some transform such as translation, and rotation was unified with display coordinate through 2D projection plane of 3D display coordinate.
实物坐标系经过一系列变换通过三维显示的二维投影面与显示坐标系统一。
Strategies of cubic projection and rotation transformation were put forward in this paper in order to transform the complicated 3D issues into 2D planar issues.
采用最佳拟合直线方法，计算产品模型投影轮廓多边形的长轴方位，并据此计算旋转变换所需转动角度。
Strategies of cubic projection and rotation transformation were put forward in this paper in order to transform the complicated 3D issues into 2D planar issues.
采用最佳拟合直线方法，计算产品模型投影轮廓多边形的长轴方位，并据此计算旋转变换所需转动角度。
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