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This paper proposed a real-time children location detection system using combined GPS module and Zigbee module. When the systems detect child's presence, they have to transmit the alarm data to a remote center, connect to CCTV system. This paper shows the experimental result whether the children is, or not, in school zone. Also the proposed GPS and Zigbee system may be extended to various application...
In this paper, we propose a real-time video watermarking chip and system which is hardware based watermark embedding system of HD (high definition) video with STRATIX FPGA device from ALTERA. There was little visual artifact due to watermarking in subjective quality evaluation between the original video and the watermarked one. Embedded watermark was all extracted after a robustness test called format...
Shot change detection is a main technique for automatic temporal segmentation of video, which requires adaptive adjustment of thresholds and real-time operation in actual applications. To date, few researches have been conducted on real-time shot change detection to be applied to hardware terminals with low performance such as PMPs (portable media player) and cellular phones. In this paper, we propose...
In this paper, we propose a real-time encryption method without additional information in digital multimedia broadcasting (DMB) contents using AES (advanced encryption standard) encryption algorithm and implement it on a personal multimedia player (PMP). As the experimental result, we examined the operation of real time encryption and decryption in PMP with format compliance, while without increment...
The video segmentation is a main technique for automatic management of video data. We propose the video segmentation algorithm using thresholds and weighting based on moving sliding window. The proposed method generates threshold and weighting factor using feature value of frame on moving sliding window. And we improve our algorithms to apply adaptive for various video data. We apply variable weighting...
At July 2008, the nationwide DMB (digital multimedia broadcasting) has got started. As DMB device's volume of sales has been over 12 million already, the development of rapidly changing network systems has increased the dangers of infringing the copyright of DMB contents. For solving this problem, we suggest that real-time encryption algorithm without additional expenses, and implemented that on PMP...
As the diffusion rate of DMB (digital multimedia broadcasting) device increases, the protection of DMB contents copyright is gradually needed. In this paper, we implemented the real time encryption in the PMP (portable multimedia player) for the copyright protection. We propose that it encrypts stored contents using SEED algorithm when DMB contents are stored into the storage in the PMP. As experimental...
Shot change detection is the main technique for automatic temporal segmentation of video. Until now, there were little research reports about real-time shot change detection for applying to hardware terminals with low performance such as PMPs (Portable Multimedia Player) and cellular phones. In this paper, we propose an adaptive real-time shot change detection algorithm using sub-sampling, weighting...
In this paper, we implement hardware and software based watermark detection system for hardware based real-time video watermark embedder. We implement a watermark detector with STRATIX FPGA from ALTERA, PCI controller and Microsoft VC# by using Wiener filter and similarity technique for watermark detection. The performance of our implemented system is very good in term of visibility and robustness...
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