Freehand sketching has long had appeal as an artistic medium for conceptual design because of its immediacy in capturing and communicating design intent and visual experience. We present a sketching paradigm that supports the early stages of design by preserving the fluidity of traditional freehand drawings. In addition, it attempts to fill the gap between 2D drawing programs, which have fixed views, and 3D modeling programs that allow arbitrary views. We implement our application as a two-dimensional drawing program that utilizes a projective representation of points --- i.e. points that lie on the surface of a unit sphere centered at the viewpoint. This representation facilitates the production of novel re-projections generated from an initial perspective sketch and gives the user the impression of being immersed in the drawing or space. We describe a method for aligning a sketch drawn outside the system using its vanishing points, allowing the integration of computer sketching and freehand sketching on paper in an iterative manner. The user interface provides a virtual camera, projective grids to guide in the construction of proportionate scenes, and the ability to underlay sketches with other drawings or photographic panoramas.
徒手素描作为一种概念设计的艺术媒介,长期以来一直具有吸引力,因为它可以立即捕捉和传达设计意图和视觉体验。我们提出了一种素描范式,通过保留传统写意图的流动性来支持设计的早期阶段。此外,它试图填补具有固定视图的2D绘图程序与允许任意视图的3D建模程序之间的空白。我们将我们的应用程序实现为二维绘图程序,该程序利用点的投影表示-即位于以视点为中心的单位球体表面上的点。这种表示有助于从初始透视图草图生成新颖的重新投影,并给用户以沉浸在图形或空间中的印象。我们描述了一种使用消失点对齐系统外部绘制的草图的方法,该方法允许以迭代方式将计算机素描和徒手素描集成在纸上。用户界面提供了一个虚拟摄像头,用于指导比例场景构建的投影网格以及将草图与其他工程图或摄影全景图一起使用的功能。 P>
机译:德国缺血性中风的终生成本:基于人群的中风登记册的结果和国家预测:Erlangen中风项目。
机译:使用CNN和CRF进行2D写意草图标注
机译:在桥梁维护过程中将2D草图信息与3D CAD模型相关联以进行VR / AR查看
机译:使用投影2D笔划进行素描
机译:使用很少的笔触基于草图的参数化曲面建模。
机译:2012年至2075年奥地利中风病登记处记录的缺血性卒中的预计数量
机译:使用投影2D笔触进行草绘