With the constant development of computer science and technology, binocular stereo vision as a special form of computer vision plays a vital role in implementing computer change detection, image correction, three-dimensional reconstruction, and is widely applied in computer vision fields such as aerial mapping, visual navigation, motion analysis and industrial inspection. However, as it is diff...

We propose a novel technique for arbitrary wavefront shaping in quadratic nonlinear crystals by introducing the concept of computer-generated holograms (CGHs) into the nonlinear optical regime. We demonstrate the method experimentally showing a conversion of a fundamental Gaussian beam pump light into the first three Hermite-Gaussian beams at the second harmonic in a stoichiometric lithium tant...

Hanna Neumann asked whether it was possible for two non-isomorphic residually nilpotent finitely generated (fg) groups, one of them free, to share the lower central sequence. G. Baumslag answered the question in the affirmative and thus gave rise to parafree groups. A group G is termed parafree of rank n if it is residually nilpotent and shares the same lower central sequence with a free group ...

Accurately and efficiently depicting the liveliness of eyes is not an easy task in animation. In this paper, we propose a method that utilizes eye tracking and motion capture technologies to animate 3D eyes. We measure it based on accuracy, efficiency, and user satisfaction. CR Categories: I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism—Animation;

Color is often used to convey information, and color compositing is often required while visualizing multi-attribute information. This paper proposes an alternative method for color compositing. In order to present understandable color blending to the general public, several techniques are proposed. First, a paint-inspired RYB color space is used. In addition, noise patterns are employed to pro...

The generation of good-looking large textures for arbitrary surfaces as well as the distribution of many objects within an interactive ecosystem are very important. The restrictions of graphics memory size limit the desired dimensions of information content. In order to create more and more realistic looking environments, computer graphics has to make use of all algorithmic capabilities. Wang t...

Impostors are image-based primitives commonly used to replace complex geometry in order to accelerate the rendering of large virtual environments. This paper describes a “layered impostor technique” used for representing distant scene-parts when seen from a bounded viewing region. A special layer placement is derived which bounds the geometric error introduced by parallaxes to a defined value. ...

Modern 3d graphics hardware provides a host of capabilities for fast 2d sprite effects. This papers describes an implementation of several fragment shaders that give realistic details to simple sprites. In particular bump mapping, relief mapping, and sprite based refraction have been implemented. Performance and possible future direction is also discussed. CR Categories: I.3.7 [Computer Graphic...

We briefly survey the major thrusts of computer graphics activities, examining trends and topics rather than offering a comprehensive survey of all that is happening. The directions of professional activities, hardware, software, and algorithms are outlined. Within hardware we examine workstations, personal graphics systems, high performance systems, and low level VLSI chips; within software, s...

In this paper we will discuss data representation formats and coding aspects of a new 3D functionality called Free Viewpoint Video (FVV). Similar to Computer Graphics (CG) or VRML applications, FVV allows for navigating with a virtual camera in 3D scenes. However, in contrast to graphical scenes in CG and VRML, FVV is based on natural scenes consisting of 3D video objects that provide a higher ...