Guest Editorial: Multimedia, Communications, Services and Security
Andrzej Dziech, Andrzej Głowacz, Mikołaj Leszczuk · Multimedia Tools and Applications · 2013
Multimedia, Communications, Services and Security" has been an important research topic in recent years and a key part of innovative ICT projects.In particular, numerous intelligent systems benefit from the integration of tools and solutions proposed by scientists, such as image, video and audio processing, development of intelligent sensors, interlinking heterogeneous subsystems with intra-and internet services, and providing reliable and secure communications channels.This special issue consists of eleven papers, which are briefly discussed as follows.In "Detection and Localization of Selected Acoustic Events in Acoustic Fields for Smart Surveillance Applications," the authors provide a method for determining the position of selected sound events in 3D space.When an event is detected (e.g.speech or impulse sound), the sound source is located so that it can be used in surveillance systems.The following two papers are related to Quality of Experience issues."Quality Assessment of Visual and Automatic Licence Plate Recognition" discusses the Quality of Experience in Automatic Licence Plate Recognition tasks based on surveillance videos streamed under constrained networking conditions.Based on the presented assumptions, the authors implement automatic recognition algorithms and compare their accuracy against user perception in order to obtain quality models and critical quality thresholds."A Journey from Subjective Psychophysical Experiments to Objective Quality Optimisation" presents two task-based video experiments in surveillance and medical applications.The problem of quality assessment, from subjective psychophysical experiments to objective quality models, is discussed.Example test results and models are provided.