Grand tours are a class of methods for visualizing multivariate data, or any finite set of points in n-space. The idea is to create an animation of data projections by moving a 2-dimensional projection plane through n-space. The path of planes used in the animation is chosen so that it becomes dense, that is, it comes arbitrarily close to any plane. One inspiration for the grand tour was the ex...

Many spatial domain error concealment techniques, which are used in decoder to improve visual quality of damaged images, have been proposed in the past years. Each algorithm is based on different assumptions and has different performance under different conditions. However, there is no extensive comparative evaluation available in literature. Performance evaluation helps us to understand the st...

View interpolation has many applications in 3D graphics, visualization, animation, and image sequence compression. I present an implementation of a particular interpolation scheme, proposed by M. Hansard and B. Buxton in Proc. 6th European Conference on Computer Vision (I), 191-202. 2000. [1]. Given two images of an object, this method can synthesize intermediate views without explicit referenc...

Systems of fuzzy relation equations are considered as models of fuzzy inference systems. A proper use of an inference mechanism connected to a fuzzy relation modelling a fuzzy rule base is certified by keeping the fundamental interpolation condition. The paper aims at new solutions of systems of fuzzy relation equations and introduces new solvability criteria.

This article presents a seldom studied 3D reconstruction approach, and focus on its numerous advantages. It is a global approach, in which the algorithm attempts to reconstruct geometric high level features by using only global attributes of the image projections of the feature. Our elementary feature is a 3D planar patch, and geometric moments are the global attributes. The proposed method of ...

Since their inception, three-dimensional reconstruction techniques have been based on the theory of Radon transforms. Only much later were Radon transforms recognized as powerful tools for image processing and pattern recognition. Techniques like the common lines technique for finding the orientation of projections of highly symmetrical particles can easily be translated into a technique that u...

Spatio-temporal interpolation describes the ability of the visual system to perceive shapes as whole figures (Gestalts), even if they are moving behind narrow apertures, so that only thin slices of them meet the eye at any given point in time. The interpolation process requires registration of the form slices, as well as perception of the shape's global motion, in order to reassemble the slices...

Methods like edge directed interpolation and projection onto convex sets (POCS) that are widely used for image error concealment to produce better image quality are complex in nature and also time consuming. Moreover, those methods are not suitable for real time error concealment where the decoder may not have sufficient computation power or done in online. In this paper, we propose a data-hidi...