the video quality assessment must be adapted to the human visual system, which is why researchers have performed subjective viewing experiments in order to obtain the conditions of encoding of video systems to provide the best quality to the user. the objective of this study is to assess the video quality using image features extraction without using reference video. rmse values and processing ...

Incorporating reliability in resource-limited mobile devices poses significant challenges due to the high overheads of power and performance. Using the observation that error-awareness at one abstraction layer can be exploited to enhance end-to-end reliability at other abstraction layers, this paper proposes a cross-layer method exploiting error control schemes across layers. In particular, a c...

With the recent advancement of video coding techniques and wide spread use of broadband networks, video streaming services over the Internet have attracted considerable attention. The recent video streaming services cover multimedia messaging, video telephony, video conferencing, standard and high-definition TV broadcasting, and those services are provided over wired/wireless networks (Schwarz ...

Digital video is becoming increasingly ubiquitous. However, editing video remains difficult for several reasons: it is a time-based medium, it has dual tracks of audio and video, and current tools force users to work at the smallest level of detail. Based on interviews with professional video editors, we developed a video editor, called Silver, that uses metadata to make digital video editing m...

Hypothetical Reference Decoder is a hypothetical decoder model that specifies constraints on the variability of conforming network abstraction layer unit streams or conforming byte streams that an encoding process may produce. High Efficiency Video Coding (HEVC) builds upon and improves the design of the generalized hypothetical reference decoder of H.264/ AVC. This paper describes some of the ...

Digital video is becoming increasingly ubiquitous. However, editing video remains difficult for several reasons. It is a time-based medium, it has dual tracks of audio and video, and current tools force users to work at the smallest level of detail. In this paper, we describe several visualization and interaction techniques that use video metadata, including a transcript, to mitigate the proble...

We propose hardware acceleration for a new edge computing abstraction called Silent Witness. This embodies severe asymmetry in the ease of write versus read operations. Surveillance data from one or more video cameras are continuously encrypted and recorded, but decrypting, processing, transmission that only occurs under stringent privacy controls. For search workloads such system, decode-enabl...

Classifying video elements according to some predefined ontology of the video content domain is a typical way to perform video annotation. Ontologies are defined by establishing relationships between linguistic terms that specify domain concepts at different abstraction levels. However, although linguistic terms are appropriate to distinguish event and object categories, they are inadequate whe...

RELIABLE SHOT DETECTION. A shot is commonly defined as the uninterrupted recording of an event or locale. Any video sequence in this world consists of one or more shots concatenated by some kind of transition effects. Therefore, shots are generally considered as the elementary units constituting a video. Detecting shot boundaries thus means recovering those elementary video units, which in turn...

This paper presents a semantic video-object model for e cient storage, indexing and content/event-based retrieval of real-time surveillance video without reverting to the constant re-interpretation of source and thus avoiding timeconsuming analysis of every video surveillance query. Based on the work on object tracking carried out at the Digital Image Research Centre (DIRC) at Kingston Universi...