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Let us adduce some definitions: If a computably enumerable (ce.) set A is a disjoint union of two sets B and C, then we say that B, C is a ce. splitting of A. A c.e. set A is tt-mitotic (btt-mitotic) if there is a ce. Splitting (B, Q of A such that the sets B and C both belong to the same tt- (btt-) degree of unsolvability, as the set A. In this paper it is proved, that there exists a tt-mitotic low...
The problems related to design a customized courseware are of immense importance in the design of adaptive dynamic courseware taking into account of knowledge and objective of individual learner. To meet the requirement of individual learner, concepts of Learner Quanta (LQ) & Learner Quanta Cloud (LQC) had been proposed in [9]. Concepts of the learner-centric LQ had been extended through a Graph...
Evaluating the quality of text-to-speech systems (TTS) is usually achieved by subjective methods where participants have to rate the stimulus on multiple scales, such as naturalness, prosody, and overall quality. In the present study, we aim towards evaluating TTS system quality using not only conventional subjective methods, but also via a neurophysiological approach based on obtaining neural correlates...
Examining monetary aspects related to QoE research, e.g. as bias, requires specifically defined empirical testing and data analysis routines. This paper presents an advanced setup for investigating the impact of purchasing behaviors in an interactive Video-on-demand scenario, and, based on lessons learned from previous and current experiments, provides a set of recommendations for further research...
This contribution describes effects on perceived direction, distance, and externalization of auditory events by changing or shaping two energy based parameters of recorded binaural room impulse responses using a binaural headphone synthesis. A controlled modification of the distance perception in non-individualized binaural headphone reproduction is presented and evaluated. The algorithms change systematically...
Sound quality is not an inherent property of sounds, but sound quality happens in a complex process which is specified by judgments where the “character” of the sound is compared to conceptual references that represent the expectations of the listeners. The references are task- and listener-specific. Here, the question will be addressed of how the complex process of quality formation may be modeled...
In this paper, two questions related to long duration audiovisual content are addressed: firstly, we investigate whether users' quality expectations/requirements develop differently over extended periods of time for different types of content. We have found indicators suggesting that high spatial and temporal activity indices decrease quality requirements over time. Secondly, we show that for long...
We are witnessing a dramatic rise of cloud-based media services nowadays, not only in terms of importance to end users but also in terms of traffic volume - a challenge for network and service providers alike. However, while the Quality of Experience of cloud-based video streaming services like YouTube has already become a well studied subject, this is less the case for music streaming services like...
Enriching multimedia with additional effects such as olfaction, light, wind, or vibration is gaining more and more momentum in both research and industry. Hence, there is the need to determine the influence of individual effects on the Quality of Experience (QoE). In this paper, we present a subjective quality assessment using the MPEG-V standard to annotate video sequences with individual sensory...
While many people enjoy S-3D, it is a well-known fact that a minority of the population is not able to perceive S-3D. These people have problems with stereopsis, or the ability of our brain to unconsciously fuse two 2D images into a single 3D percept. In clinical practice, several stereopsis tests are used to measure this deficiency. Most of these tests are expensive paper-and-pencil tests requiring...
Preparing and conducting subjective quality assessments is a time consuming and expensive task. Therefore, we present a Web-based evaluation framework which aims on reducing the time needed for planning and designing a subjective quality assessment. The presented framework can be used for both crowdsourced and laboratory experiments. It should ease the task of designing a subjective quality assessment...
Local backlight dimming is one of the most promising techniques for reducing power consumption and improving contrast characteristics of liquid crystal displays (LCD). In practice, due to light diffusion and a smaller number of backlight sources than pixels, local backlight dimming must often trade-off between leakage of light in dark pixels and clipping of luminance in bright pixels. Only few studies...
Managing photo collections involves a variety of image quality assessment tasks, e.g. the selection of the “best” photos. Detecting near-duplicate images is a prerequisite for automating these tasks. This paper presents a new dataset that may assist researchers in testing algorithms for the detection of near-duplicates in personal photo libraries. The proposed dataset is derived directly from an actual...
The effects of using two-dimensional video projection together with parametric three-dimensional spatial audio reproduction system are examined in this study. The discrepancy between the auditory and visual events, and differing depth cues, are evaluated by means of subjective evaluations using the method of adjustment. The results show the Directional Audio Coding to be well suited for immersive...
Recently learning to rank has become one of the popular means to create a ranking model for social image search. However, the results of existing approaches are not as satisfactory for the large gap between low-level visual features and high-level semantic concepts, and these sophisticated approaches require a significant amount of parameters tuning to be effective and efficient. In this paper, we...
Modern industrial quality monitoring systems are based on optical fibre sensors, microelectronic sensory technology and miniaturized infrared spectroscopy systems based on low-power, low-cost, high-efficient and innovative hardware solutions. The proposed paper presents development work related to create remote control system for monitoring water pollution petrochemical products using optical fibre...
All Denial of Service Attacks (DoS) is malignant. Their occurrence in the network affects the entire network performance. Dropping attack either Packet Dropping or Datagram Dropping is DoS in nature. Both these attacks occur corresponding to Transport layer of Mobile Ad hoc Network (MANET) stack which affects the entire functionality of transport layer. In this paper we have discussed a novel kind...
A number of methods have been recently proposed to highlight salient regions in images and videos. Considering the importance of attention in video quality evaluation, it would be useful to know how accurate these methods are in terms of predicting viewers' gaze locations in video. However, independent quantitative evaluations of saliency methods are lacking in the current literature. In this paper,...
IP Multimedia Subsystem was proposed to support the building and deployment of convergent data, voice and other innovative services over an IP-based infrastructure, independently from the device and access network in use. In this paper, we provide some guidance for engineers who design the resilience of these services. We first classify IMS-based services using several families, and study the resilience...
Cognitive radio (CR) represents an exciting new paradigm on spectrum utilization and potentially more bandwidth for exploding multimedia traffic and this potential can be further boosted by utilizing well established opportunistic multicasting principles. We focus on the layer encoded video multicast problem in a dynamic CR network. We contribute a data fragmentation mechanism, that fragments data...
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