This paper reviews recent advances in using B pictures in the context of the draft H.264/AVC video compression standard. We focus on reference picture selection and linearly combined motion-compensated prediction signals. We show that bi-directional prediction exploits partially the efficiency of combined prediction signals whereas multihypothesis prediction allows a more general form of B pict...

Children's maternal, self, and marital representations were examined in 46 children 3 1/2 to 7 years old using the MacArthur Story Stem Battery. Children drawn from agencies serving battered women expressed fewer positive representations of their mothers and themselves, were more likely to portray interparental conflict as escalating, and were more avoidant and less coherent in their narratives...

This paper presents a method for lossy coding of still pictures using the theory of iterated function systems (IFS) which is a standard description for deterministic fractals. The coding concept is based on a blockwise fractal approximation of the original image by contraction mappings of itself using affine transformations which are a special case of IFSs. Data reduction is achieved by exploit...

Stereoscopy is a technique used for recording and representing stereoscopic (3D) images. It can create an illusion of depth using two pictures taken at two or more slightly different positions. There are two possible way of taking stereoscopic pictures by using special two-lens stereo cameras or systems with two single-lens cameras joined together. Stereoscopic pictures allow us to calculate th...

The notion of a surface is a very classical one in technology, art and the natural sciences. Just to name a few examples, the roof of a building, the body of string instrument and the front of a wave are all, at least in idealized form, surfaces. In mathematics their use is very old and very well developed. A very special class of (mathematical surfaces), given by particularly nice equations, a...

During the enquiry into the state of refraction of Indian children of different communities with special reference to myopia (Pendse et al, ,1951), it was found necessary to study the normal blood -pictures of a chosen community with a view to comparing tlicm with the blood pictures of pathological myopia. Since the communities, were-chosen and arranged on the basis of similar environmental fac...

Purpose: Wearing high-heel shoes has become a habit among women of the present era. Statistics show that around 60% of women wear high-heel shoes at least thrice a week. High-heel shoes cause postural changes and damage body joints. The present study was conducted to assess the effect of high-heel shoes on the head protrusion angle. Methods: This study was conducted at University of Social Wel...

Adhering to the view that emotional reactivity is organized in part by underlying motivational states--defensive and appetitive--we investigated sex differences in motivational activation. Men's and women's affective reactions were measured while participants viewed pictures with varied emotional and neutral content. As expected, highly arousing contents of threat, mutilation, and erotica promp...