In this paper, we present a method for color reduction of Persian carpet cartoons that increases both speed and accuracy of editing. Carpet cartoons are in two categories: machine-printed and hand-drawn. Hand-drawn cartoons are divided into two groups: before and after discretization. The purpose of this study is color reduction of hand-drawn cartoons before discretization. The proposed algorit...

In this paper we present LazyBrush, a novel interactive tool for painting hand-made cartoon drawings and animations. Its key advantage is simplicity and flexibility. As opposed to previous custom tailored approaches [SBv05, QWH06] LazyBrush does not rely on style specific features such as homogenous regions or pattern continuity yet still offers comparable or even less manual effort for a broad...

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 solution is presented to automatically segment a user’s sketch during his/her drawing. First, a graph-based sketch segmentation algorithm is proposed to segment a cluttered sketch into multiple parts based on the...

We provide a system that will serve as a high quality pencil media line reproduction agent for creating aesthetically pleasing lines that mimic human-drawn lines. The method avoids computationally expensive techniques and large storage space. The system is not intended to replace artists or illustration, but to provide a tool for users with no training to produce traditional images using a penc...

We describe a new naming paradigm for pen-based computing which we call Pictographic Naming. Using our approach, traditional character-by-character handwriting recognition (HWX) is avoided. Instead, we use a combination of user interface conventions and approximate matching techniques. Since pictographic names incorporate pen-stroke data, they can never be reproduced exactly, so name lookup bec...