منابع مشابه
Frequency-selective partial encryption of compressed audio
The widespread adoption of compressed digital audio increasingly demands effective ways to conjugate ease of distribution with content protection. In this paper a low-complexity partial-encryption scheme for MPEG Audio is presented. The aim is to provide listeners with sample-quality audio material that can be upgraded to full-quality by simply acquiring a key and decrypting a few selected bits...
متن کاملPartial encryption of compressed images and videos
The increased popularity of multimedia applications places a great demand on eecient data storage and transmission techniques. Network communication, especially over a wireless network , can easily be intercepted and must be protected from eavesdroppers. Unfortunately, en-cryption and decryption are slow and it is often diicult, if not impossible, to carry out real-time secure image and video c...
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Mobile multimedia applications, the focus of many forthcoming wireless services, increasingly demand low-power techniques implementing content protection and customer privacy. In this paper low complexity perception-based partial encryption schemes for speech are presented. Speech compressed by a widely-used speech coding algorithm, the ITU-T G.729 standard at 8 kb/s, is partitioned in two clas...
متن کاملAn Efficient, Parallel Multi-key Encryption of Compressed Video Streams
The popularity of digital video storage and delivery systems has given rise to the need for video encryption to preserve secrecy and digital rights. Conventional encryption techniques are not appropriate for securing multimedia systems given the need to encrypt a large amount of data in real-time. This paper presents a selective video encryption algorithm that utilizes multiple stream ciphers a...
متن کاملVideo Abstraction in H.264/AVC Compressed Domain
Video abstraction allows searching, browsing and evaluating videos only by accessing the useful contents. Most of the studies are using pixel domain, which requires the decoding process and needs more time and process consuming than compressed domain video abstraction. In this paper, we present a new video abstraction method in H.264/AVC compressed domain, AVAIF. The method is based on the norm...
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ژورنال
عنوان ژورنال: International Journal of Research in Engineering and Technology
سال: 2013
ISSN: 2321-7308,2319-1163
DOI: 10.15623/ijret.2013.0204055