Compressed Video Enhancement using Regularized Iterative Restoration Algorithms Passant Vatsalya Karunaratne Many applications, ranging from scienti c applications to consumer electronics products, use the acquisition and processing of digital video. The acquisition, compression, transmission, and format and rate conversion of an information carrying video signal degrades the accurate represent...

Automatic analysis of human facial expressions is one of the challenging problems in machine vision systems. It has many applications in human-computer interactions such as, social signal processing, social robots, deceit detection, interactive video and behavior monitoring. In this paper, we develop a new method for automatic facial expression recognition based on facial muscle anatomy and hum...

Based on the newly developed DaVinci technology, a designing scheme of embedded web video monitoring system is proposed. The scheme combines high-speed and dual-core signal processor (TMS320DM6467) with embedded Linux operating system as the platform to complete the H.264 encoding, transmission and storage of video signal. Building the embedded Web server, user can login into the server and mon...

High Efficiency Video Coding (HEVC) is the state-of-art-video coding standard which significantly improved the coding efficiency of a coded video signal with its preceding video coding standards. This paper presents technical aspects of HEVC thought objective and subjective performance analysis of different versions of HM software test models in different configurations in Main profile. We comp...

Data transmission security has become an extremely important field of research. Steganography is an art of hiding information in image, audio and video files in a way that would meet the security requirements in the form of overt or covert. In this study, we propose a new hybrid steganography technique for color images that hide secret messages in the frequency domain of a cover image's blu...

This thesis addresses the problem of error-resilient video transmission. In most video transmission applications, a video signal is compressed, packetized and transmitted over an error-prone channel. Owing to multipath fading on wireless channels and/or congestion in the Internet, some video packets are lost or arrive in error. When feedback is unavailable or limited, this problem is traditiona...

The estimation of unknown signal samples by extrapolation from known data arises in many signal processing applications. In this thesis, a very generic concept for the estimation of unknown signal samples is derived which is referred to as selective extrapolation. Several applications in image and video communications are discussed from the point of view of extrapolation. Unknown areas occurrin...

The recognition of clinical manifestations in both video images and physiological-signal waveforms is an important aid to improve the safety and effectiveness in medical care. Physicians can rely on video-waveform (VW) observations to recognize difficult-to-spot signs and symptoms. The VW observations can also reduce the number of false positive incidents and expand the recognition coverage to ...

A digital video signal provides many advantages over analog signals: digital signals can be processed using computers or signal processors and transmitted via digital networks. Transmission via existing (phone) lines and non-wearing recording on hard disks are promoting the trend toward digital video signals. Because a digitized video signal has a very high data transfer rate of 216 Mbit/s (acc...

This paper presents a design methodology for a high-performance, programmable video signal processor (VSP). The proposed design methodology explores both technology-driven hardware tradeoffs and application-driven architectural tradeoffs for optimizing cost and performance within a class of processor architectures. In particular, this methodology allows concurrent consideration of these competi...