In its long research history , several types of techniques for surface reconstruction from contours have been addressed : ? triangular surfaces ; ? particle systems ; ? superquadnics ; ? implicit surfaces ; ? others , such as b - splines surfaces and d surfaces . u triangular surface is the traditional method to reconstruct surface from parallel ? ~ slices of contours 從醫(yī)學(xué)圖像重建三維模型的研究始于19世紀(jì)70年代,在近三十年的發(fā)展歷史中,該領(lǐng)域中出現(xiàn)了以下幾類(lèi)算法: 1三角曲面[ cai96 , tang99 ] ; 2粒子系統(tǒng)[ jaillet97 ] ; 3