Interactive Sketch Based Interfaces And Modelling For Design

Sketching is a natural and intuitive communication tool used for expressing concepts and ideas that are difficult to communicate through text or speech alone. In design applications, drawings are used at various stages of the design process: from the early concept drawings scribbled on a piece of paper to immersive interactions in which users manipulate and adjust the 3D form of an object in virtual or augmented reality environments. This variety in drawing activities brings about the need for different interpretation strategies that support not only the sketching activity itself, but also allow sketch-based interactions, such as sketch-based queries, to take place. In this book, we explore the different drawing approaches used in design and the algorithms required for processing and interpreting the different sketches and drawings in design. The book is divided into two parts. The first part focuses on sketching in the 2D domain. This includes the digitization of offline and paperbased sketches, techniques for online sketch recognition, observations of user drawing habits, algorithms for inferring depth from 2D drawings, as well as non-photorealistic rendering techniques that are then applied to sketch-based queries. The second part of the book focuses on 3D sketching in virtual or augmented reality spaces. Here, we present the processing and rendering of the 3D strokes, the different interaction devices available for 3D sketching, and look at different applications where immersive 3D sketching has been applied with success.

The field of sketch-based interfaces and modeling (SBIM) is concerned with developing methods and techniques to enable users to interact with a computer through sketching - a simple, yet highly expressive medium. SBIM blends concepts from computer graphics, human-computer interaction, artificial intelligence, and machine learning. Recent improvements in hardware, coupled with new machine learning techniques for more accurate recognition, and more robust depth inferencing techniques for sketch-based modeling, have resulted in an explosion of both sketch-based interfaces and pen-based computing devices. Presenting the first coherent, unified overview of SBIM, this unique text/reference bridges the two complementary research areas of user interaction (sketch-based interfaces), and graphical modeling and construction (sketch-based modeling). The book discusses the state of the art of this rapidly evolving field, with contributions from an international selection of experts. Also covered are sketch-based systems that allow the user to manipulate and edit existing data - from text, images, 3D shapes, and video - as opposed to modeling from scratch. Topics and features: reviews pen/stylus interfaces to graphical applications that avoid reliance on user interface modes; describes systems for diagrammatic sketch recognition, mathematical sketching, and sketch-based retrieval of vector drawings; examines pen-based user interfaces for engineering and educational applications; presents a set of techniques for sketch recognition that rely strictly on spatial information; introduces the Teddy system; a pioneering sketching interface for designing free-form 3D models; investigates a range of advanced sketch-based systems for modeling and designing 3D objects, including complex contours, clothing, and hair-styles; explores methods for modeling from just a single sketch or using only a few strokes. This text is an essential resource for researchers, practitioners and graduate students involved in human-factors and user interfaces, interactive computer graphics, and intelligent user interfaces and AI.

Computational Support for Sketching in Design surveys the literature on sketch based tools from journals, conference proceedings, symposia and workshops in human-computer interaction, cognitive science, design research, computer science, artificial intelligence, and engineering design.

The field of sketch-based interfaces and modeling (SBIM) is concerned with developing methods and techniques to enable users to interact with a computer through sketching - a simple, yet highly expressive medium. SBIM blends concepts from computer graphics, human-computer interaction, artificial intelligence, and machine learning. Recent improvements in hardware, coupled with new machine learning techniques for more accurate recognition, and more robust depth inferencing techniques for sketch-based modeling, have resulted in an explosion of both sketch-based interfaces and pen-based computing.

Proceedings of the Third International Conference on Computer-Aided Design of User Interfaces, 21-23 October 1999, Louvain-la-Neuve, Belgium

The book is inspired by the second seminar in a cycle connected to the celebrations of the 150th anniversary of the Politecnico di Milano. "Working with the Image Description Processing Prediction" was the motto of this meeting, aiming to point out the role of Visual Language not only in describing reality, but also in supporting the thinking processes in Science (prediction), in Art (invention), in Technical studies (prevision) and in identifying and working on both visible and invisible phenomena. As John Barrow states, "So often a picture is better than a thousand words" and "The visual language is the most natural, while the other language could reasonably be considered as 'postscripts' to the human story". The essays included in the volume (from lectures, the poster session, interviews and round table) will show the wide range of technical possibilities connected with the present use of the Image, especially thanks to Computer Graphics, from 3D Modeling to Augmented Reality, while also offering a glimpse of interesting theoretical perspectives. In the end, as noted by Martin Heidegger, the word "theory" not only comes from the Ancient Greek verb "theoreo", that is "to see, to observe", but it also echoes the words "theos" and "thea", namely "god" and "goddess", and above all, it shares the root with the term "aletheia", which is the "truth", which is not far from the ultimate goal of research.

This book constitutes the thoroughly refereed post-proceedings of the 13th International Workshop on Design, Specification, and Verification of Interactive Systems, DSVIS 2006, held in Dublin, Ireland in July 2006. The 19 revised full papers presented together with one keynote paper, and two working group reports were carefully reviewed and selected from 57 submissions during two rounds of reviewing and improvement.

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