查询词典 projection gradient method

So this paper models DC-DC converters as switched linear systems, introduces projection strategy conception of switched linear systems, and proposes control strategy of switching rule based on min-projection strategy.

为此，该文建立DC-DC变换器的切换线性系统模型，引入切换线性系统投影法的概念，提出最小投影法切换律的控制策略。

Some technical expressions: Hough transformation: Hough transform K average value: K-means fitting straight line: fitting line pattern plate match: template matching vertical and horizontal axis projection: vertical and horizontal projection BP neural network algorithm: BP neural networks most close neighbor sorter: K-NN

一些专业术语：Hough变换：Hough transform K均值：K-means 拟合直线：fitting line 模版匹配：template matching 垂直与水平投影法：vertical and horizontal projection BP神经网络算法：BP neural networks 最近邻分类器：K-NN --------- PS：Google翻译的就不用贴了

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天绘屏笔-投影机伴侣，它让你实现这样的操作：手拿教杆直接把普通投影屏幕变成触摸屏，直接在投影屏幕上操作电脑--随意拖、拉、摇、移、图文标注、书写绘画得心应手，使用时可以忘记计算机的存在！

Results: The direct projection tomography machine can display tomography image of the model. Conclusion: It is reasonable and valuable that the direct projection tomography technology.

直接反投影断层原理成立，可以显示出物体断层图像，因而进一步研究直接投影用于人体断层成像有一定的价值。

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Controlled by the computer, the device can transport a sample to be subjected to parameter extraction to the electrical rotation stage through the pipeline system, the CCD imaging system takes the plant image at a single angle, then the images are subjected to image segmentation by the computer, the projection plant height at the angle can be obtained after subjecting the divided binary images to skeleton extraction and leaf path searching, and finally the maximal value of the projection plant heights at all angles is calculated as the plant height.

本发明涉及植物株高自动测量装置及测量方法，本装置包括流水线系统、可见光CCD成像系统、电动旋转台、旋转台控制器、计算机、图像采集卡，电动旋转台依次与旋转台控制器和计算机相连，可见光CCD成像系统依次与图像采集卡和计算机相连，本发明由计算机控制，采用流水线系统，将待提取参数的样品送上电动旋转台，由CCD成像系统拍摄单个角度下的植株图像，由计算机将所得图像进行图像分割，从分割后二值图像经过骨架提取和叶片路径搜索可得到该角度下投影株高，最后求出所有角度下投影株高的最大值作为植株的高度。

When processing data in controlling survey, we usually project twice (land surface→according to ellipsoid plane→gauss projection plane) and it brings about Deformed projection twice too. It is not good for large scale mapping and setting-out of project construction.

控制测量在数据处理时，通常要进行两次投影（地面→参考椭球面→高斯投影平面），也相应地产生两次投影变形，不利於大比例尺测图和工程施工放样。

The next step in the projection process is the projection of points onto the quadrilaterals.

投影过程的第二步就是把点投影到四边形上去。

The process of the algorithm include: image enhancement, using self-adapting threshold value reduce redundance, using Hough transformation extract first feature line, according to the vertical projection of the horizontal gradient perform characters line, using the improving Hough transformation with angle constraints acquire the intersection of the two feature lines, according the characters of geometry position to judge the fault.

算法流程包括图像增强，自适应阈值变换滤除无关特征，应用Hough变换提取主特征线条，依据线型特征图像水平梯度沿垂直方向的积分投影定位主特征线，基于极角约束Hough变换推出两条主特征线交点，最后根据安全链和支架的几何形态特征判读故障。

In chapter 4 we proposed a linear inequality constraint optimization question frame about projection of gradient algorithm, and has performed the numerical experimentation, but its convergence also needs further study.

在第四章中我们提出了线性不等式约束最优化问题的一个投影梯度算法框架，做了数值试验，但其收敛性还有待进一步研究。

We have something to do in the new stage.

在这段崭新的时期中，我们有一些要做的。

The difference between tourism decision-making under uncertainty and risky tourism decision-making is indistinctive.

其中不确定性旅游决策和风险旅游决策的界线比较模糊，两者的区分是相对的。