Two hybrid error concealment schemes based on application of forward error control (FEC) coding in combination with passive error concealment techniques to diierent layers of coded data in a video transmission system are evaluated. It is shown that use of passive error concealment schemes alone generally does not provide suucient protection against channel errors, especially in the case of vide...

Compressed video bitstreams are intended for real-time transmission over communication networks. Most of the video coding standards employ the temporal and spatial prediction structure to reduce the transmitted video data. Therefore, the coded video bitstreams are highly sensitive to information loss and channel errors. Even a single bit error can lead to disastrous quality degradation in both ...

Streaming media applications often suffer from packet losses in wired or wireless IP links. In order to get reasonable degree of quality in case of packet losses, it is necessary to have error concealment tools at the decoder. Even though several research has been done on monoscopic video, very few studies are found in the literature for stereoscopic error concealment. In this paper we propose ...

Arbitrarily shaped video objects are an important concept in modern video coding methods. The techniques presently used are not based on image elements but rather video objects having an arbitrary shape. In this paper, spatial shape error concealment techniques to be used for object-based image in error-prone environments are proposed. We consider a geometric shape representation consisting of ...

Abstract This research aims to investigate the incorporation of anamorphism into product design and has resulted in creation a series handheld objects with embedded anamorphic information. Anamorphism is phenomenon typically applied images, where it appears distorted from all but one angle. Often associated optical illusions, its history viability for application are reviewed. includes an asses...

The article deals with the problem of obtaining a qualitative assessment energy concealment degree radio signals. Energy is regarded as most significant form signal concealment, since designer transmitting devices has influence and greatest freedom in defining these properties. purpose to systematize available knowledge about methods order conduct mutual comparison characteristics various autho...

Compressed video sequences are very sensitive to channel disturbances when they are transmitted through an unreliable environment such as a wireless channel. The transmission errors not only corrupt the current decoded frame, but also propagate to the succeeding frames. Many error concealment methods have been proposed to recover the errors by exploiting temporal and spatial correlation. In thi...

In this paper, we proposed a temporal error concealment (EC) using the concealed boundary pixels and the adaptive block matching method. The proposed boundary matching method improves the spatial correlation of the macroblocks (MBs) by reusing the pixels of the concealed MB to estimate a motion vector of a error MB. The adaptive block matching method inspects horizontal edge and vertical edge f...