CAJ | 학술논문

基于主动轮廓模型（Snake模型），提出一种点模型的谷脊线提取与优化方法。首先构建点模型的局部隐式曲面，并求出采样点的曲率值；然后通过求解主曲率极值点得到潜在谷脊点，依据特征点的主方向连接谷脊点生成谷脊折线段；最后利用主动轮廓模型对谷脊折线段进行优化。实验结果表明，算法是鲁棒的且能够生成光滑的谷脊线。
기우주동륜곽모형（Snake모형），제출일충점모형적곡척선제취여우화방법。수선구건점모형적국부은식곡면，병구출채양점적곡솔치；연후통과구해주곡솔겁치점득도잠재곡척점，의거특정점적주방향련접곡척점생성곡척절선단；최후이용주동륜곽모형대곡척절선단진행우화。실험결과표명，산법시로봉적차능구생성광활적곡척선。
Based on the active contour model, a robust algorithm is proposed for extracting and optimizing valley-ridge lines from point-sampled geometry (PSG). First, local implicit surface of the PSG is reconstructed, and the curvature of every sampling point is computed. Potential valley-ridge points are then obtained by solving the extreme of the main curvature, and potential valley-ridge points is connected into valley-ridge polylines according to the main direction of the feature points. Finally, snake model is used to smooth the valley-ridge polyline. Experimental results show that the algorithm is robust and can generate smooth valley-ridge lines.