Fast mode selection for H.264 video coding standard based on motion region classification
H.264/AVC achieves higher compression efficiency than previous video coding standards. However, the process of selecting the optimal coding mode for each macroblock (MB) results in extremely high computation complexity, which make it difficult for ...
Adapting metric indexes for searching in multi-metric spaces
An important research issue in multimedia databases is the retrieval of similar objects. For most applications in multimedia databases, an exact search is not meaningful. Thus, much effort has been devoted to develop efficient and effective similarity ...
An application oriented and shape feature based multi-touch gesture description and recognition method
In order to customize multi-touch gestures for different applications, and facilitate multi-touch gesture recognition, an application oriented and shape feature based multi-touch gesture description and recognition method is proposed. In this method, ...
A cross-modal method of labeling music tags
In this paper, we discuss various features of music objects in two kinds of domain. Among these features, Mel-frequency cepstral coefficients (MFCCs) are further discussed and described by Gaussian mixture model (GMM). Also, the similarity between GMMs ...
SeWDReSS: on the design of an application independent, secure, wide-area disaster recovery storage system
Distributed wide-area storage systems must tolerate both physical failure and logic errors. In particular, these functions are needed to enable the storage system to support remote disaster recovery. There are several solutions for distributed wide-area ...
Multiresolution, perceptual and vector quantization based video codec
This paper presents a novel Multiresolution, Perceptual and Vector Quantization (MPVQ) based video coding scheme. In the intra-frame mode of operation, a wavelet transform is applied to the input frame and decorrelates it into its frequency subbands. ...
Real-time vandalism detection by monitoring object activities
This paper proposes a novel method for the detection of vandalism events in video sequences. The method is based on a proposed definition for common vandal behaviors recorded on surveillance video sequences. To do this, the method monitors changes ...
A novel dynamic pricing scheme for contributing peers in the VoD system
In this paper we have proposed a dynamic pricing scheme for the contributing peers in the Video on Demand (VoD) system. The scheme provides an effective mechanism to maximize the profit through the residual resources of the contributing peers. A ...
Advanced delivery of sensitive multimedia content for better serving user expectations in Virtual Collaboration applications
- Maria Teresa Andrade,
- Safak Dogan,
- Anna Carreras,
- Vitor Barbosa,
- Hemantha Kodikara Arachchi,
- Jaime Delgado,
- Ahmet M. Kondoz
A major challenge when accessing protected multimedia content in heterogeneous usage environments is the ability to provide acceptable levels of quality of experience to all involving users. Additionally, different levels of protection should be ...
Exploring probabilistic localized video representation for human action recognition
In recent years, the bag-of-words (BoW) video representations have achieved promising results in human action recognition in videos. By vector quantizing local spatial temporal (ST) features, the BoW video representation brings in simplicity and ...
Extracting representative motion flows for effective video retrieval
In this paper, we propose a novel motion-based video retrieval approach to find desired videos from video databases through trajectory matching. The main component of our approach is to extract representative motion features from the video, which could ...