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This work describes the appropriateness of the application of color sensor and mobile devices for the design and development of secure personal identification systems in pervasive environments. The system proposes to use a color sequence as unique identification. The sequence will be properly encrypted along with user personal information in a structure called IDCKey and stored on a mobile device...
The authors have already proposed a method of generating a GUI display screen using a genetic algorithm. This paper describes a method of reducing the processing time while achieving the necessary processing. To speed up the processing, three reduction measures are proposed: (1) reduction of the number of times the GA processing algorithm is executed, (2) reduction of the number of generations by...
In-home wireless networks are currently available in every home today. However, the open nature of wireless medium and the increase of wireless traffic make it difficult for network operator to guarantee user experience of provided services. In this paper, we focus on multimedia services especially wireless IPTV that needs to be guaranteed by network operator. In order to avoid global degradation...
Object based video representation and coding promises to keep the largest amount of scene information during video transmission and processing, at least for animated video. We compare traditional H.264 encoded video material with uncoded object based video, and also with coded object based video using different settings for both representations. For the only available object based codec, MPEG 4 pt...
This paper proposes a solution for using supercapacitors to power mobile phones. Based on a DC/DC voltage converter and a supercapacitor stacking scheme, this solution is designed to maximize the usable energy of the supercapacitors as well as the converter's performance, which is confirmed in simulation. A specific charging scheme for this design is also proposed and simulated, enabling fast and...
Conventional abstraction models of physical-layer algorithms have been proven inaccurate for the cross-layer design of wireless networks with cooperative relaying diversity. To partially fill this gap, this paper proposes an enhanced packet reception model to assist in the cross-layer design of physical and link-layer algorithms with cooperative relaying diversity. The analysis is mainly focused on...
Local color transfer is the process of assigning a given color to a local region in a target image. The local region that contains the given color has to be segmented. Conventionally, the segmentation of the corresponding local region in a target image is based on the color distance. The region which is the closest in color distance is separated. However, since the close range of color distance separating...
We are studying an interactive panoramic video streaming system that enables consumers using consumer network resources and HDTVs that most consumers have in their homes to watch high-resolution panoramic images beyond HD quality. We propose a new data format and a partial delivery method with multiple bitrates and resolutions. This paper describes a field trial conducted to evaluate the system on...
An automotive-grade software architecture is presented which allows the straightforward implementation of distributed video use cases by solving the problem of rendering frame-synchronous video to multiple display sinks. By relying on a standardized high-bandwidth network, dedicated and costly point-to-point video connections are not required any more.
Digital scanners transfer the image data from color photo prints or documents into digital images that are similar to the input data. However, when scanning faded images, there is sometimes a need to restore the original image. Most correction methods for faded images use illuminant estimation algorithms, such as the gray world assumption and white patch Retinex methods, as the phenomenon of color...
CE consumer devices are becoming powerful enough to realize augmented reality (AR) systems on mobile devices, and to visualize complex virtual scenes. This is not limited to CE and increasingly demanded for professional applications. One of them is to visualize power transmission lines and their impact on the landscape. This might help discuss diverse opinions and to optimize the planning in various...
This paper presents a system for automated DVB STB video output integrity analysis using full reference picture comparison algorithm in a networked environment. As a referent input, golden STB device is used. The pictures grabbed from the tested devices are compared with the golden reference frames. The proposed system captures outputs from the referent device, the device under test, transfers the...
In this paper we present a preliminary study towards the design of a low cost colorimetric imaging device. We show that an effective color measurement is possible even using consumer camera sensors. We present here the colorimetric accuracy test results obtained with simulated data using the theoretical model of image formation and a camera simulation system. The final paper will also include the...
Image super resolution has been extensively investigated in the past decades. In this paper, we propose a super resolution algorithm which can provide vivid output image with rich details and sharp edges. The main contribution of this paper is the development of a database-free texture synthesis technique. Based on the fractal property of nature images, it is possible to find proper high-resolution...
Quality of Experience is an important part of overall quality definition in order to include user and human perception into the product development process. An adequate way of linking up Quality of Experience with algorithm development has, until now, been missing. Therefore, a demonstrative approach, initiated by a methodological literature review, for this linkage in the field of scaleable and adaptive...
A number of well-known authentication protocols are considered in the context of next-generation mobile and CE network services. The potential weaknesses of current protocols can be overcome using Zero Knowledge Proof (ZKP) techniques to protect user passwords so an alternative ZKP protocol, SeDiCi 2.0, is described. This offers mutual and also two-factor authentication that is considered more secure...
The present study applies to FM/AM car radio receivers. Estimating the energy of a FM/AM modulated signal, using the Teager-Kaiser nonlinear energy operator (TEO), it is possible to simplify the techniques for detecting and suppressing the shot noise with a significant reduction of software and of hardware respect to the traditional implementations (so also saving silicon area).
VP8 is announced by Google as a royalty-free alternative to the H.264/AVC video codec, promising comparable picture quality, data rate and encoding speed. This paper compares the two codecs analysing the published statements and comparing them with results of our own experiments.
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