Sketch recognition systems are currently being developed for many domains, but can be
time consuming to build if they are to handle the intricacies of each domain. In order to aid …

Clothoid splines are gaining popularity as a curve representation due to their intrinsically
pleasing curvature, which varies piecewise linearly over arc length. However, constructing …

In this paper, we study the problem of how to segment a freehand sketch at the object level.
By carefully considering the basic principles of human perceptual organization, a real-time …

We study the problem of morphing between two polylines that represent linear geographical
features like roads or rivers generalized at two different scales. This problem occurs …

We describe a trainable recognizer for multi-stroke symbols. The learned definitions are
described in terms of the constituent geometric primitives (lines and arcs), the properties of …

Chemists often use hand-drawn structural diagrams to capture and communicate ideas
about organic compounds. However, the software available today for specifying these …

This paper proposes an effective approach for content-based sketch retrieval. It addresses
three characteristics as follows. Firstly, both structural relations and global shape descriptors …

Freehand sketching is a natural and powerful means of interpersonal communication. But to
date, it still cannot be supported effectively by human-computer interface. In this paper, we …

A proper segmentation of pen marking enhances shape recognition and enables a natural
interface for sketch-based modeling from simple line drawing tools to 3D solid modeling …

We present SpeedSeg, a technique for segmenting pen strokes into lines and arcs. The
technique uses pen speed information to help infer the segmentation intended by the …