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A sketch-based approach to human body modelling

机译：基于草图的人体建模方法

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摘要

In this paper, we present a new approach and a novel interface, Virtual Human Sketcher (VHS), which enables those who can draw, to sketch-out various human body models. Our approach supports freehand drawing input and a "Stick Figure→Fleshing-out→Skin Mapping" modelling pipeline. Following this pipeline, a stick figure is drawn first to illustrate a figure pose, which is automatically reconstructed into 3D through a "Multi-layered Back-Front Ambiguity Clarifier". It is then fleshed-out with freehand body contours. A "Creative Model-based Method" is developed for interpreting the body size, shape, and fat distribution of the sketched figure and transferring it into a 3D human body through graphical comparisons and generic model morphing. The generic model is encapsulated with three distinct layers: skeleton, fat tissue, and skin. It can be transformed sequentially through rigid morphing, fatness morphing, and surface matching to match the 2D figure sketch. The initial resulting 3D body model can be incrementally modified through sketching directly on the 3D model. In addition, this body surface can be mapped onto a series of posed stick figures to be interpolated as a 3D character animation. VHS has been tested by various users on Tablet PC. After minimal training, even a beginner can create plausible human bodies and animate them within minutes.
机译：在本文中，我们提出了一种新的方法和一个新颖的界面，即Virtual Human Sketcher（VHS），它可以使能够绘画的人勾勒出各种人体模型。我们的方法支持徒手绘图输入和“ Stick Figure→Fleshing-out→Skin Mapping”建模管道。遵循此流程，首先绘制了一个简笔画以说明人物姿势，然后通过“多层后置歧义澄清器”将其自动重建为3D。然后以手绘轮廓将其充实。开发了一种“基于创意模型的方法”，用于解释素描人物的身体大小，形状和脂肪分布，并通过图形比较和通用模型变形将其转移到3D人体中。通用模型封装有三个不同的层：骨骼，脂肪组织和皮肤。可以通过刚性变形，脂肪变形和表面匹配来顺序变换以匹配2D图形草图。初始生成的3D人体模型可以通过直接在3D模型上草绘来进行增量修改。此外，可以将此身体表面映射到一系列摆放的简笔画上，以进行内插作为3D角色动画。 VHS已在Tablet PC上经过各种用户的测试。经过最少的培训，即使是初学者也可以创建合理的人体，并在几分钟内为它们设置动画。

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