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The primary motivation for building SketchNode is to provide an environment for exploring how people use tools to create, arrange, edit and interpret graph diagrams. It has two equivalent interfaces: <i>sketching</i> and <i>diagramming</i>, so that the functional requirements and advantages and disadvantages of the differences can be studied. In this paper(More)
Digital ink features drive recognition engines. Intuitively, we understand that particular features are of more value for some problems than others. Likewise, inclusion of poor features may be detrimental to recognition success. Many different ink features have been proposed for ink recognition, and most work well for the context that they are employed.(More)
We present McSig, a multimodal system for teaching blind children cursive handwriting so that they can create a personal signature. For blind people handwriting is very difficult to learn as it is a near-zero feedback activity that is needed only occasionally, yet in important situations; for example, to make an attractive and repeatable signature for legal(More)
Touch and stylus sensitive computer displays are widely available. Yet, the development of gesture sets to support these interaction methods continues to be difficult. We present RATA, a tool for interaction designers and software developers to create gesture recognizers for novel and custom gesture sets. Guided by the RATA wizard, the developer: defines(More)
Whilst robots are increasingly being deployed as social agents, it is still difficult to program them to interact socially. This is because current programming tools either require programmers to work at a low level or lack features needed to create certain aspects of social interaction. High level, domain specific tools with features designed specifically(More)
Digital hand-drawn sketches provide a new and unique way of interacting with a prototype user interface design while it is still rendered as a sketch. The successful use of prototypes and scenarios for exploring design ideas is well documented. Hand-sketched designs have also been found preferable to formal diagrams during early design. The study reported(More)