: The CIECAM97s and its revision, as a colour appearance model, were applied for a series of fabrics with different colours and depths to explain their colour appearance coordinates in similar viewing conditions. The results show that due to some modifications which expand the scale, the modified model has improved capadilities in calculating chroma. Besides, the calculations were simpler for t...

In the field of physically-based rendering of natural phenomena, rendering of atmospheric light scattering takes a very important place. Real-time rendering of the sky and planetary atmospheres in general is essential for all outdoor computer games, various simulators, virtual worlds and even for animated movies. In our work we present an accurate and fast method for real-time rendering of para...

Closed captioning has been enabling access to television for people who are deaf and hard of hearing since the early 1970s. Since that time, technology and people’s demands have been steadily improving and increasing. Closed captioning has not kept up with these changes. We present the results of a study that used graphics, colour, icons and animation as well as text, emotive captions, to captu...

In contemporary educational contexts there is considerable variation in how argumentation works and what forms and styles it takes. Influencing factors include the educational purpose and task, the level of education, and the discipline or curriculum subject in which it occurs. This paper offers a theoretical framework and a set of multimodal analytical tools which can provide a rich and system...

Full spectra allow the generation of physically correct rendering of a scene under different lighting conditions. Here, a tool is developed to design a palette of lights and materials having certain properties, such as selective metamerism or colour constancy. The mathematical underpinnings of the tool consist of two parts. Firstly, we make use of a method for optimally characterizing full spec...

With the rapid development in global communication networks, the threat of security and in particular that of cellular telecommunication system is real and highly dangerous. Mobile phone and other wireless device usage is increasing daily with ground breaking technological developments – in design, style, content and micro-chips performance. The contents of the multimedia packages – conversatio...

While moving a fingertip over a fine surface we experience a sensation that gives us an idea of the surfaces properties. A satisfactory simulation of this feeling is still an unsolved problem. In this paper we describe a rendering strategy based on vibrations which play an important role in the tactile exploration of fine surfaces. To produce appropriate excitation patterns we use an array of v...

Images are important information carriers which are often used in email messages and web pages to attach textual information. In Born digital compound image (BDCI) text and graphics/pictures come together on digital devices having certain distinct characteristics like low resolution (easy for online transmission and to display on screen) and text is created digitally on image. Text from BDCI ca...

The legacy of Arab-Muslim architecture in Spain is one of the most valuable parts of the wealthy Spanish heritage. The application of new concepts and practices to the conservation of this architecture has led to numerous examples of restoration which respect historical values, while using the most modern techniques and principles at the same time. Nowadays, virtual reconstruction of buildings ...