Real-time global illumination is an extremely challenging problem because of its intrinsic complexity due to the interplay between complex geometry, multiple light bounces, and stringent real-time frame-rate requirements. In this paper, we present a new technique that enables computation in generic scenes for diffuse surfaces static geometry. Our combines voxel-based representation scene, voxel...

Planar drawings of clustered graphs are considered. We introduce the notion of completely connected clustered graphs, i.e. hierarchically clustered graphs that have the property that not only every cluster but also each complement of a cluster induces a connected subgraph. As a main result, we prove that a completely connected clustered graph is c-planar if and only if the underlying graph is p...

Metaphase is the brief and highly conspicuous period during cell division where chromosomes become positioned at the spindle equator through the process of " congression ". it is generally believed that congression promotes accurate chromosome segregation during anaphase, and this logic has driven research over several decades to identify the underlying mechanisms. Recent studies have demonstra...

Planarity is an important concept in graph drawing. It is generally accepted that planar drawings are well understandable. Recently, several variations of planarity have been studied for advanced graph concepts such as k-level graphs [6,10–16] and clustered graphs [5,7]. In k-level graphs, the vertices are partitioned into k levels and the vertices of one level are drawn on a horizontal line. I...

Spatial frequency separability is proposed as an attractive exploit for obtaining color halftone watermarking methods from monochrome clustered-dot halftone watermarking techniques. Detection of watermarks embedded in individual halftone channels is typically confounded by the cross-coupling between colorant halftone separations and scan RGB channels caused by the so-called “unwanted absorption...