Sketch-Based Search and Composition of 3D Models

There is growing interest in developing tools with which novice users can create detailed 3D models of their own designs. The most popular approaches to this problem include sketch-based interfaces and part-composition systems. The sketch-based modeling systems provide natural interfaces for creating 3D models from 2D sketches, but are generally limited to creating simple geometric models. The part-composition systems provide tools for combining parts extracted from a database of 3D models, and thus can generate very detailed 3D models, but usually with much higher overhead and expertise required by the user for manipulating 3D geometry interactively.