Ten colour emotional scales, namely, "Warm Cool", "Active-Passive", "Like-Dislike", "Clean-Dirty", "Fresh-Stale", "Modern-Classical", "Heavy-Light", "Hard- Soft", "Tense-Relaxed", and "Masculine-Feminine"are investigated for single-colour stimuli in CIELAB colour space within a psychophysical experiment by forty observers. The relationships between Iranian colour emotional responses and CIELAB ...

When attempting to solve a multi-variate optimisation problem, it is often a wise strategy to sacrifice a locally-optimal solution in the hope of finding a better global solution. Algorithms that solve optimisation problems in this manner are sometimes called hill climbing algorithms . Recently, several new hillclimbing approaches have been proposed and have gained in popularity for solving spe...

Viewers with vision impairments often have difficulty seeing all of the content on television and now they have the added task of seeing and interpreting interactive elements that are primarily image or graphics based. We carried out two studies to examine the difficulties partially sighted and blind users have with current interface designs for interactive television. Results indicate that peo...

The creation and rendering of realistic water scenes is one of the challenging tasks in Computer Graphics. To reproduce the illumination and colour inside water bodies an algorithm capable of dealing with media with anisotropic and multiple scattering has to be used. We have chosen the discrete ordinates method to solve the problem of light transport. Both the theoretical basis and the algorith...

The present R graphics system was originally written as a placeholder, which could be replaced when a better alternative became available. This temporary solution has now become so entrenched that it is probably no longer possible to remove it. In this paper we will look at some of what is possible in the R graphics system, how it could be improved, and what might not be fixable. We will also l...

We report a novel application of a graphics processing unit (GPU) for the purpose of accelerating the search pipelines for gravitational waves from coalescing binaries of compact objects. A speed-up of 16-fold in total has been achieved with an NVIDIA GeForce 8800 Ultra GPU card compared with one core of a 2.5 GHz Intel Q9300 central processing unit (CPU). We show that substantial improvements ...

We present a novel real-time subsurface scattering algorithm that is computed purely on the GPU. It is implemented as pixel shader and works solely in screen space, making it independent from scene complexity. We improve the Translucent Shadow Maps technique by introducing an adaptive hierarchical sub-sampling scheme to exploit the fact that homogeneous surfaces have a smooth contribution to th...