To fulfill the need of the application of RP technique in medical domain, reverse CAD modeling from medical cross sections is systematically studied in this dissertation. Firstly, Some algorithms related to the research of this dissertation are studied. New algorithms for orientation and inclusion test for simple polygon, an error constrained automatic faring algorithm for B-spline curve and a theorem regarding the termination criterion for subdivision of triangular Bézier patch are proposed. Then based on similarity between contours of adjacent sections, a methodology for surface reconstruction from cross sections is presented. Finally, a virtual measuring method is proposed.

本文針對(duì)RP技術(shù)在醫(yī)學(xué)領(lǐng)域應(yīng)用的需要免费视频,国产精品，系統(tǒng)研究了基于醫(yī)學(xué)斷層輪廓數(shù)據(jù)的反求CAD建模理論和方法：(1)在基礎(chǔ)算法研究部分，提出了簡(jiǎn)單多邊形方向及點(diǎn)在多邊形內(nèi)外判斷的新方法在线国产精品、三角Bézier曲面片離散的誤差控制定理和一種帶誤差約束的B樣條曲線(xiàn)的自動(dòng)光順?lè)椒ǎ?2)提出了一種基于相鄰層輪廓相似性的醫(yī)學(xué)斷層輪廓數(shù)據(jù)曲面重構(gòu)方法无码区无码区视频网网址；(3)提出了一種稱(chēng)為"虛擬測(cè)量"的曲面模型處理方法。

We denote by M_n and T_n the space of n×n full matrices and the space of n×n upper trangular matrices over F, respectively.

設(shè)F是域性爱特黄免费视频。記M_n和T_n分別為域F上n×n全矩陣空間和n×n上三角矩陣空間偷拍照片网。

It is decadent and luxurious.Oversize suede sofas , contemporar y opium beds and crackled glass Chinese wood tables are spaciously arranged . A baby grand piano fur ther states its lavish appointments .

寬大舒適的糜皮沙發(fā)和新型臥塌，紅木鑲邊的碎花玻璃茶幾讓人恍若置身于貴人的客廳欧美人射精视频，皮革紋墻和小三角鋼琴進(jìn)一步展現(xiàn)著豪華国产毛片在线看。

It is decadent and luxurious. Oversize suede sofas , contemporar opium beds and crackled glass Chinese wood tables are spaciously arranged . A baby grand piano fur ther states its lavish appointments .

寬大舒適的糜皮沙發(fā)和新型臥塌，紅木鑲邊的碎花玻璃茶幾讓人恍若置身于貴人的客廳黄片亚洲一区，皮革紋墻和小三角鋼琴進(jìn)一步展現(xiàn)著豪華国产A片址一网。

This group, which includes such famous names as Stegosaurus and Triceratops, is one of the two clades into which the dinosaurs are divided.

目前，恐龍被分為兩大類(lèi)黄色网站国产精品，一類(lèi)是鳥(niǎo)龍類(lèi)亚洲sanji在线，包括有名的劍龍和三角龍；另一類(lèi)則是蜥龍類(lèi)毛片无限看，包括有名的梁龍和暴龍美女黄色视频A毛片。

Stay tapes can also be used on one-shoulder designers, halters and cut-away armholes,surplice cuts,and wrap designs as well as on the roll lines of tailored jackets.

牽帶也可用于一字領(lǐng)款式，女用三角背心和圓袖窿可以免费观看黄色视频的网站，斜疊襟和疊襟式服裝以及西裝駁口線(xiàn)人人操人人上人人看。

Stay tapes can also be used on one-shoulder designers, halters and cut-away armholes,surplice cuts,and wrap designs as well as on the roll lines of tailored jacket s.

牽帶也可用于一字領(lǐng)款式，女用三角背心和圓袖窿男女猛烈无遮挡免费视频网站，斜疊襟和疊襟式服裝以及西裝駁口線(xiàn)色五月激情四射。

Stay tapes can also be used on one-shoulder designers, halters and cut-away armholes,surplice cuts,and wrap designs as well as on the roll lines of tailor ed jackets.

牽帶也可用于一字領(lǐng)款式，女用三角背心和圓袖窿日韩亚洲专区，斜疊襟和疊襟式服裝以及西裝駁口線(xiàn)午夜视频黄色。

The method is based on the principle of triangle inequality with the use of the third side and both sides of the ratio of the size to determine the Corner to feature point and its two adjacent feature points formed by the angle between two tangent linear and the third triangle on both sides and edges with another feature of the ratio as a variable.

該方法根據(jù)三角不等式原理利用第三邊與另外兩邊之和的比值大小來(lái)確定角點(diǎn)，以特征點(diǎn)和它相鄰的兩個(gè)特征點(diǎn)所形成的兩條直線(xiàn)的夾角正切值以及三角形第三邊與另兩邊和的比值作為特征不變量人人操人人摸性交精品。

Research result indicate both the Triangulated Irregular Network as a facial model and the Generalized Straight Triangular Prism Network as a volumetric model are suitable to coal seam 3D dynamic modelling.

研究表明不規(guī)則三角網(wǎng)(Triangulated Irregular Network国产一级A片无码免费视频一，TIN)和廣義直三棱柱網(wǎng)(Generalizedstraight Triangular Prism Network，GSTPN)分別適合煤層動(dòng)態(tài)建模的表面模型和體模型一区二区三区激情欧美亚洲日本。