Recently, interactive surfaces with multi-touch sensors based on frustrated total internal reflection (FTIR) have seen increased attention in research and commerce. In this paper, we present a new method of gathering data about the users’ gestures on an interactive table beyond simple binary touch information. In addition to the infrared light emitters at the rim of the interaction surface, a s...

To render specular surfaces, reflections play an important role to enhance the realism. For concave surfaces, the effects of self-reflections that the surface reflects a part of the surface itself are necessary to create realistic images. This paper presents an interactive rendering of rigid specular surfaces taking into account self-reflections. In the preprocess, sample rays incident onto eac...

We present a method for image-based visualization of flow fields on unstructured grids. For interactive exploration of flow data from CFD simulations, we combine GPU-accelerated surface extraction methods and line integral convolution (LIC) in a multi-pass algorithm. In contrast to other highly efficient methods, computation of stream lines is performed directly on the unstructured grid, where ...

We describe a technique for interactive rendering of diffraction effects produced by biological nanostructures, such as snake skin surface gratings. Our approach uses imagery from atomic force microscopy that accurately captures the geometry of the nanostructures responsible for structural colouration, that is, colouration due to wave interference, in a variety of animals. We develop a renderin...

In this paper we present a distortion technique that provides a focus & context view of an interactive surface’s screen on a mobile device. Simply showing a reduced version of the surface’s screen on the mobile device would not have been sufficient as UI elements could be too small to be manipulated. Users modify the region of interest (ROI) of the focus & context distortion via gestural input ...

Interactive tools for shape modeling with hierarchical implicit surfaces have been limited both by the high computational cost of visualization, and the lack of techniques for direct surface manipulation. To address the visualization issue, Hierarchical Spatial Caching is developed. This novel technique combines caching and spatial approximation to accelerate queries of the functional model tre...

moving in line with the postulation that metadiscourse (md) markers help transform a dry and tortuous piece of text into a coherent and reader-friendly one, the researchers in the current study attempted to investigate the effect different metadiscourse markers might have on iranian efl learners’ perception of written texts. to this end, 120 undergraduate english students were given three diffe...

metadiscourse is a widely used term in current discourse analysis and language education, referring to an interesting, and relatively new approach to conceptualizing interaction between text producers and their texts and between text producers and users. despite the growing importance of the term, however, it is often understood in different ways and used to refer to different aspects of langua...

While replay value is a common term in interactive entertainment, psychological research on its meaning in terms of user experiences is sparse. An exploratory experiment using the interactive drama "Façade" was conducted (n=50) to examine shifts and continuities in entertainment-related user experiences between first and second exposure to the same system. A questionnaire with brief scales meas...