The advancement in digital technologies have made it possible to produce perfect copies of digital content. In this environment, malicious users reproduce the digital content and share it without compensation to the content owner. Content owners are concerned about the potential loss of revenue and reputation from piracy, especially when the content is available over the Internet. Digital water...

Due to the recent progress in internet technology and evolution of very high speed networks operating everywhere, protection of digital content is must. So, it has become a tough task to protect copyright of an individual's creation. The purpose of digital watermarking is to incorporate concealed information in multimedia content to ensure a security amenity or simply a labeling application. Th...

Today’s digital content is displayed on a diverse set of devices, ranging from large monitors of various aspect ratios, to small screens of cell phones or handheld devices. Existing display standards, such as HTML, support the ability to dynamically resize the composition of the page to enable viewing on different display sizes. During this resizing process, images always remain fixed in size. ...

The goal of this paper is to evaluate the effect of ATM network cell loss on the playback quality of transmitted MPEG video. The MPEG format and its susceptibility to data corruption is analyzed to calculate a theoretical statistical data corruption per cell loss measure. Experiments are run using an ATM network simulator with actual MPEG video to measure the effect of cell loss rate and bursti...

Protection of Intellectual Proprietary Rights is currently one of the most important barriers to electronic commerce of digital contents over networks. Authors and content providers understand the immense advantages of the digital world but show some reserve. However, technologies and techniques to protect IPR in digital content exist, their deployment in a coherent way is still in an early sta...

A digital high-speed camera in combination with a light intensiier and a exible endoscope is used to record running human speech. Due to the light absorbtion of the exible endo-scope, the recorded image sequences are too dark for human examination and too poor for digital motion analysis. Therefore, two diierent image enhancement methods are compared to improve the image sequences. Resulting tr...

A wave breaking against a sea wall causes high pressure gradients to act along the sea bed, pushing objects away from the wall. This situation is modelled using pressure impulse theory to show that, for a large object near a sea wall, the impulsive force due to the wave will move the object. This force can be found, given knowledge of the added mass and volume of an object. In particular, if th...

With the continuing growth in network technology, the exchange of digital images and audio as well as text has become very common regardless of whether the digital content is used for commercial purpose or not. Since such digital content is easily duplicated and re-distributed, protecting copyrights and privacy is an important issue. For the protection of digital content, access control based o...

A new secure image transmission technique is proposed, which transforms automatically a given large-volume secret image into mosaic image of the same size. The mosaic image, which looks similar to an arbitrarily selected target image and may be used as a camouflage of the secret image, is yielded by dividing the secret image into blocks and transforming their color characteristics to be those o...

Multimedia forensics can be defined as the science that tries, by only analysing a particular digital asset, to give an assessment on such a content and to extract information that can be useful to address and support an investigation linked to the scene represented in that specific digital document. The basic idea behind multimedia forensics relies on the observation that both the acquisition ...