Modeling Sketching Primitives to Support Freehand Drawing Based on Context Awareness

Freehand drawing is an easy and intuitive method for thinking input and output. In sketch based interface, there lack support for natural sketching with drawing cues, like overlapping, overlooping, hatching, etc. which happen frequently in physical pen and paper. In this paper, we analyze some characters of drawing cues in sketch based interface and describe the different types of sketching primitives. An improved sketch information model is given and the idea is to present and record design thinking during freehand drawing process with individuality and diversification. The interaction model based on context is developed which can guide and help new sketch-based interface development. New applications with different context contents can be easily derived from it and developed further. Our approach can support the tasks that are common across applications, requiring the designer to only provide support for the application-specific tasks. It is capable of and applicable for modeling various sketching interfaces and applications. Finally, we illustrate the general operations of the system by examples in different applications

A Virtual Desktop's First evaluation for an Augmented Design Process

Many CAD tools already allow to design and directly manipulate ideas in a digital way. However, designers still use pen and paper during the early design phase of their projects. Indeed, existing CAD tools constraint creative work. There is a need for a spontaneous human computer interaction in design computing. In order to answer to this need, we develop an integrated aided design tool based on a Virtual Desktop. The designer sits in front of a classical desk where s/he can design and manipulate drawings and generated models. This paper describes the observations made during experiment about Virtual Desktop’s use by a designer. The experiment demonstrates that the immersive aspect of our system interface modifies the relationship between the designer and his/her model and, by the way, how this relation generates a new type of augmented interaction.Peer reviewe

Understanding and supporting collaborative design using an horizontal tabletop display

peer reviewedBased on our research on evaluating a Virtual desk environment for architects and designers is it possible to derive requirements for supporting collaborative design activities ? We first examine questions related to internal and external interactions in architectural design, to the role of external representations and their extension as shared objects of design in collaborative horizontal tabletop. Then we describe the Virtual Desktop and the EsQUIsE software. We will synthesize the results of our former investigations on this setting, in order to derive new orientations for the design and research

Natural and Smooth Pen-based Interaction Utilizing Multiple Pen Input Channels

高知工科大学博士(工学) 平成22年3月19日授与 (甲第176号

Invisible Sketch Interface in Architectural Engineering, in Graphics Recognition, Recent Advanced and Perspectives

peer reviewe