This paper presents a quantitative characterization of the instability that a human user often experiences while interacting with a virtual textured surface rendered with a force-reflecting haptic interface. First, we quantified the degree of stability/ instability during haptic texture rendering through psychophysical experiments. The stiffness of the virtual textured surface upon detection of...

Many computer graphics applications remain in the domain of the specialist. They are typically characterized by complex user-directed tasks, often requiring proficiency in design, colour spaces, computer interaction and file management. Furthermore, the demands of this skill set are often exacerbated by an equally complex collection of image or object manipulation commands embedded in a variety...

Textural attributes of apple impact consumers’ acceptance the fruit, and are frequently measured by researchers industry experts to evaluate fruit quality at different stages production marketing. Various instruments used conduct these textural evaluations in research settings. The application makes comparison integration results extremely difficult. main objectives this study were compare data...

The effect of irradiation through UV-C on the content phenolic compounds, antioxidant activity, color, and texture profile was evaluated in Bordô variety grapes. Grapes were subjected to stress by at time 0.5, 1.0, 4.0, 10 30 min that correspond doses 0.1, 0.3, 2.4, 7.2 kJ m-2, respectively. total anthocyanins content, color grapes after storage 22 ºC for 24 48 h. In general, samples irradiated...

Retro-projected face displays have recently appeared as an alternative to mechanical robot faces, and stand apart by virtue of their flexibility: they are able to present a variety of faces varying in both realism and individual appearance. Here we examine the role of both 3D mask structure and texture image quality on the perception of gender in one such platform, the Mask-bot. In our experime...

Noise is one of the main sources of quality deterioration not only for visual inspection but also in computerized processing in brain magnetic resonance (MR) image analysis such as tissue classification, segmentation and registration. Accordingly, noise removal in brain MR images is important for a wide variety of subsequent processing applications. However, most existing denoising algorithms r...

Sulphur-doped carbon was synthesized using a thiophene-based twin monomer. While tetra(thiophene-2-ylmethoxy)-silane can be converted into sulphur containing nanocomposites, which lead to microporous sulphur-doped carbon, it is possible to produce additional mesopores by the use of templates. Thus, a variety of sulphur-doped carbon materials with tailored pore texture are available.

This paper presents Topmod, a topologically robust mesh modeler. The system provides a large number of tools to manipulate the mesh structure 2-manifold polygonal meshes. Topmod allows users to easily create a wide variety of very high genus polygonal meshes. The system also provide tools to seamlessly texture map these high genus meshes.

Derived varieties were invented by P. Cohn in [4]. Derived varieties of a given type were invented by the authors in [10]. In the paper we deal with the derived variety Vσ of a given variety, by a fixed hypersubstitution σ. We introduce the notion of the dimension of a variety as the cardinality κ of the set of all proper derived varieties of V included in V. We examine dimensions of some varie...