To improve the roundness of the polyhedron , we can divide the edges into shorter lengths and raise the points of division to a geodesic on the surface of a sphere 由于正多面体不太圆，在每个面上增加连接棒相当于短程线可令圆度增加。
To improve the roundness of the polyhedron , we can divide the edges into shorter lengths and raise the points of division to a geodesic on the surface of a sphere 由于正多面体不太圆，在每个面上增加连接棒(相当于短程线)可令圆度增加。
Geodesic active contour model ( gacm ) was originally proposed by caselles as a novel approach for image segmentation and object exaction 短程线主动轮廓模型( geodesicactivecontourmodel )是一种全新的图像分割和目标提取方法,由caselles等人首先提出。
Nonetheless , the energy function of the gacm and its solving algorithm has many restrictions , such as instability of numerical computation , probability of divergence of control points 但是短程线主动轮廓模型的能量函数及其解法存在很多局限性,如数值计算的不稳定性和控制点存在不收敛的可能性等等。
The dome structures adopt the " doing more with less " principle in that they enclose the largest volume of interior space but with least amount of surface area , therefore materials and cost can be saved 这些短程线圆顶具体应用物尽其用的原理，内里空间至大而表面积就最小，可以尽量少用物料来降低成本。它们内里宽敞。
The dome structures adopt the " doing more with less " principle in that they enclose the largest volume of interior space but with least amount of surface area , therefore materials and cost can be saved 这些短程线圆顶具体应用物尽其用的原理，内里空间至大而表面积就最小，可以尽量少用物料来降低成本。它们内里宽敞。
The principle of gacm is the same with one of the traditional model of active contour , that is , the model searched and exacted the object contour by cooperation of the curve inner control force as well as the image force 短程线主动轮廓模型的基本思想和传统主动轮廓模型一样,是在曲线内部控制力和图像力相互作用下使曲线运动到物体轮廓来完成对物体轮廓的搜索和提取。
This form of construction is strong and has the additional advantage of enclosing a given volume with the least possible use of materials . geodesic domes are actually derived from regular polyhedra . those that are derived from the dodecahedron and the icosahedron have joints where 5 distinct triangles meet 由正十二或正二十面所建而成的短程线圆顶特色是当中的一些接驳点由五个三角形组成而由正八面体所建立的圆顶则可以分割成四分之一或四分之三个。
This form of construction is strong and has the additional advantage of enclosing a given volume with the least possible use of materials . geodesic domes are actually derived from regular polyhedra . those that are derived from the dodecahedron and the icosahedron have joints where 5 distinct triangles meet 由正十二或正二十面所建而成的短程线圆顶特色是当中的一些接驳点由五个三角形组成；而由正八面体所建立的圆顶则可以分割成四分之一或四分之三个。
