This paper deals with monitoring user perception of multimedia presentations in a Universal Multimedia Access (UMA) enabled system using objective metrics. To this end, we propose a noreference (NR) video quality metric that measures the block-edge impairment or blockiness in a received video sequence. This NR metric is designed to be used as an integral part of the UMA viewer at the user end. ...

The image sensor is the most important part of video and still image processing line in digital video or still camera. Data of CMOS process will produce noise in long transmission distance; therefore it must first be amplified and integrated each pixel data. The choice of medium and apparatus for transmitting image and the other the control signal will be directly related to the quality and rel...

1 This work is partially funded by the Commission of the European Communities, under the Fifth Framework Program, within the IST project ADAMANT (IST-2001-39117: Airport Decision and Management Network). Abstract In this paper, we present and evaluate a location-based system for the intelligent distribution of image and video data to mobile users. The system design is focused in enhancing the s...

This paper is an overview of our on-going project that proposes a monitoring system based on various sensors to detect risky situations for the elderly. From the standpoint of the enduser, a video surveillance system equipped with many other sensors can relieve caregivers from the need to keep a vigilant eye on each patient’s movements, while such technology can be effectively used for monitori...

The increasing use of compression standards in broadcasting digital TV has raised the need for established criteria to measure perceived quality. This paper presents a methodology using Circular Back-Propagation (CBP) neural networks for the objective quality assessment of MPEG video streams. Objective features are continuously extracted from compressed video streams on a frame-byframe basis; t...