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This paper presents a new application of dynamic frequency scaling in conjunction with variations of frame-wise processing burden. The operating frequency of processors is controlled dynamically with exploiting the characteristics of each data frame processed in the multimedia algorithms. The proposed algorithm is designed and implemented on a mobile digital TV platform to verify the performance of...
In various full HD video applications, high-level image enhancement requires localization of overlay text. In this paper, we propose text localization that uses a region-shrinking multistep process to achieve both high accuracy and fast processing in full HD videos.
The number of wireless LAN users is increasing. Therefore, the number of public wireless LAN services is also increasing. However the transmission area of a wireless LAN is not visible to the user. Therefore, it is difficult to control the administration of a wireless LAN. As a result, administrators need to take adequate management against information leakage, eavesdropping and unauthorized access...
Movie abstraction tools will soon become very popular applications that help users quickly understand the content of a movie before buying or downloading. Abstraction is a lightweight representation of the original movie content. There are two types of abstraction: summarization and skimming. In this paper we describe an improved tool for movie content abstraction and understanding. Basically, this...
In this paper, we propose an adaptive filtering algorithm for prediction signal utilizing the Wiener filter to improve the coding efficiency of the H.264/AVC standard. The proposed algorithm first calculates the filter coefficients for the current frame by using the prediction and original images of the previous frame. Then, filtering is selectively applied to each inter-predicted macroblock (MB)...
One of the most important aspects of image quality is contrast and this paper presents a new hybrid method for contrast enhancement. The proposed method is a combination of two basic contrast enhancement methods i.e. transform and histogram. At first we apply Nonsubsampled Contourlet Transform (NSCT) on the source image, then NSCT coefficients are mapped to fuzzy domain and modified by a mapping function...
The increasing number of driver assistance, infotainment and entertainment systems in automobiles results in higher requirements for bandwidth, fault tolerance and timing behaviour concerning the in-vehicle communication structure. In future, in-vehicle networks based on current technologies will reach their limits due to insufficient scalability and complexity. Real-time (RT) Ethernet is a new, scalable...
This paper presents a mechanism of content sharing for multiple devices in real-time multimedia service environment and analyzes the CPU performance of the contents transformation server. In this environment, users are provided the transformed multimedia contents adequate to their devices. Our existing structure of transforming service is not designed to sharing the content with multiple users using...
In this paper, we propose the cache-like hardware architecture of motion compensation for general hybrid video codec. The proposed architecture exploits dynamic cache-like buffer structure. Typically, every macroblock unit (MBU) fetches a constant amount of reference data from the external video memory for cache update. However, when the updated data is centered at a fixed position, e.g. considering...
The Radio Frames concept describes a novel approach towards a synergetic combination of editorial program planning and profile-based personalization for the provision of digital radio services. It defines flexible templates that allow editorial creation of well-composed individual playlist from recommended audio items while encouraging serendipity. To demonstrate this concept, a proof-of-concept prototype...
This paper1 presents a new efficient and highly scalable open-source development of a JPIP server, financed by the European Space Agency, that allows the streaming of large volumes of JPEG 2000 imagery. Although its was mainly designed with the aim to serve the Sun data generated by the recently launched NASA SDO observatory, its features can be very interesting for many other remote image/video browsing...
Pervasive multimedia enables delivery of content according to the user context. One interesting option addressed in this paper is uninterrupted delivery of the content to the dynamically changing most suitable device in the user proximity. We present a protocol for switching an HTTP stream to an alternative device connected through a different network. Streams can either be fetched from or pushed...
This article describes an approach for a system, which helps to increase energy efficiency in households by providing more transparency of energy consumption on single device level. The main idea is to analyze energy consumption using a smart meter and break it down into its individual characteristic components using an algorithm. Having such data, an online energy efficiency coach can provide households...
Mobile surveillance of patients vital data is of prominent use in today's e-health applications. Given the fact that smartphones provide Internet connectivity almost anywhere and at any time, these seem to be the perfect key device for such application. In contrast to available solutions, our approach described in this paper allows using almost any smartphone for such purpose. In addition, the system...
This paper presents a novel occlusion adaptive frame rate up-conversion method. The proposed method consists of two main steps; true motion estimation and directionally adaptive motion compensated interpolation. In order to reliably estimate the motion vectors of occlusion regions without increasing the number of frames, forward and backward directed motion vectors are merged recursively. Following...
Consumer electronic devices have become a part of our everyday lives. A statistically non-negligible percentage of electric loads on the power network is represented by these devices. Consumer electronics notoriously consume DC power, at several voltage levels ranging anywhere from 1.8 to 24 V, in the absence of unified standards. As a consequence, each load is served from the AC network through several...
This paper proposes a novel recognition scheme for semantic labeling of 2D objects present in still images. The principle consists of matching unknown 2D objects with categorized 3D models in order to associate the semantics of the 3D object to the image. We tested our new recognition framework by using the MPEG-7 and Princeton 3D model databases in order to label unknown images randomly selected...
User centricity is important when designing new products and services. Automatic personalization emerges as key feature to prevent users from being bothered by complex management tasks, allowing them to get the most from their devices. However, devices within home environments are shared among family members, making personalization complex. This article describes a system that uses presence detection...
COMES®1 is a new mobile diagnosis and therapy-platform for a healthy and self-determined life. It has emerged out of research and developments within the last 10 years regarding sensor-based systems at the Heinz Nixdorf-Lehrstuhl für Medizinische Elektronik, with which biomedical data can be measured, transferred and verified via established measurement-techniques and communication structures [1,2].
This paper describes one solution of an intelligent home networking system for residential energy monitoring and controlling which consists of wirelessly controlled light dimmer switches, smart outlets, smart power extension cords, remote controllers, wireless PIR sensors and home energy controller. The system is based on ZigBee 2.4GHz wireless network protocol for easy configuration and management...
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