Interactive tools for segmenting D and D images are presented These tools allow a user to quickly revise a segmentation result obtained from an automatic method A thresholding technique is described that nds a unique threshold value for each homogeneous region in an image The threshold value is found such that variance in the region is minimized under change in the threshold value Curve and sur...

the purpose of this study was to investigate the impact of blended learning and multimedia software on iranian esp students' vocabulary learning. to this end, 120 iranian esp learners were assigned to two groups: the experimental and control groups. the experimental group received instructions through multimedia software while the control group received traditional instructions. the data were c...

Smartphones and tablet computer are ubiquitous in daily life. Many people carrying smartphones and tablet computers with them simultaneously. The multiplicity of different sized devices indicates the conflict between the maximal interaction space and a minimal bulkiness of the devices. This dissertation we extend the interaction space of mobile devices by adding mutualspatial awareness to ordin...

Interactive visualization of large structured and unstructured data sets is a permanent challenge for scientific visualization. Large data sets are for example created by magnetic resonance imaging (MRI), computed tomography (CT), Computational fluid dynamics (CFD) finite element method (FEM), and computer aided design (CAD). For visualizing those data sets not only accelerated rasterization by...

Interactive visual analysis of a patient’s anatomy by means of computer-generated 3D imagery is crucial for diagnosis, pre-operative planning, and surgical training. The task of visualization is no longer limited to producing images at interactive rates, but also includes the guided extraction of significant features to assist the user in the data exploration process. An effective visualization...

Pin&Play has enabled a new type of surface-based physical user interface, characterised by dynamic arrangement of interface objects on a surface area. Previous work has shown that this affords rapid re-arrangement of the spatial layout of interface objects, for example in adaptation to user preferences, but the Pin&Play system did not support tracking of object locations on the surface. In this...

In this paper, we propose an interactive method based on Smoothed Particle Hydrodynamics (SPH) to simulate blood as a fluid with free surfaces. While SPH was originally designed to simulate astronomical objects, we gear the method towards fluid simulation by deriving the force density fields directly from the Navier-Stokes equation and by adding a term to model surface tension effects. In contr...

We present algorithms for interactive rendering of largescale NURBS models. The algorithms convert the NURBS surfaces to Bézier surfaces, tessellate each Bézier surface into triangles and render them using the triangle-rendering capabilities common to current graphics systems. This paper presents algorithms for computing tight bounds on surface properties in order to generate high quality tesse...