CAJ | 학술논문

线条能够以相当少的可视信息来有效地表示一个三维模型的形状.利用图形硬件的高度并行处理能力,文中提出了一种新的基于物体空间的线条绘制方法.对于一个光滑物体形状,新型的Suggestive轮廓线能够结合侧影轮廓线来生成非常好的视点相关的线条效果.并且,最新被引入到Direet3D 10流水线的几何着色器能处理三角形图元数据及输出零个或多个线条图元.文中提出了一种并行化的线条绘制方法,能够直接在几何着色器中抽取三维的特征线条.该方法能根据视点与模型的距离自动地选取合适比例的线条进行绘制,绘制的线条平滑,绘制速度快.在文章最后给出的许多实验示例证实了该方法的效果.
선조능구이상당소적가시신식래유효지표시일개삼유모형적형상.이용도형경건적고도병행처리능력,문중제출료일충신적기우물체공간적선조회제방법.대우일개광활물체형상,신형적Suggestive륜곽선능구결합측영륜곽선래생성비상호적시점상관적선조효과.병차,최신피인입도Direet3D 10류수선적궤하착색기능처리삼각형도원수거급수출령개혹다개선조도원.문중제출료일충병행화적선조회제방법,능구직접재궤하착색기중추취삼유적특정선조.해방법능근거시점여모형적거리자동지선취합괄비례적선조진행회제,회제적선조평활,회제속도쾌.재문장최후급출적허다실험시예증실료해방법적효과.
This paper presents a new object-space based algorithm for rendering a 3D model as a line drawing using graphics hardware, based on the insight that a line drawing can effectively convey shape using remarkably minimal visual content. Suggestive contours, a new type of line can be combined with silhouettes to produce impressive view-dependent line drawing of smooth shapes. In addition, geometry shader, which is newly introduced into the Direct3D 10 pipeline, an process per-triangle primitive data and output zero or more line primitives. This paper proposes a parallelized line drawing approach that directly extracts 3D sparse linear features in geome-try shader. The method selects lines at an appropriate scale automatically, and exhibits good frame-to-frame coherence at interactive rates. The implementation of the algorithm is straightfor-ward, and several experimental examples are given at the end of the paper to demonstrate the ef-fectiveness of our approach.