Among the techniques of video processing, video summarization is a promising approach to process the multimedia content. In this paper we present a novel summarization algorithm, Balanced Audio Video Maximal Marginal Relevance (Balanced AV-MMR or BAV-MMR), for multi-video summarization based on both audio and visual information. Balanced AVMMR exploits the balance between audio information and ...

We present a voice-activated, hands-off, ATM-based video conferencing application. The application, called Vaudeville, features high quality NTSC video, voice-activated audio transmission, audio bridging of two audio streams, and voice-activated video switching. It supports multiple simultaneous multi-party conferences using a scalable multicast mechanism. We describe how Vaudeville was built u...

Automatic video scene change detection is a challenging task. Using audio or visual information alone often cannot provide a satisfactory solution. However, how to combine audio and visual information efficiently still remains a difficult issue since there are various cases in their relationship due to the versatility of videos. In this paper, we present an effective scene change detection meth...

The author presents a system for speech synthesis that selects and concatenates speech segments (units) of various size from an adequately prepared audio-visual speech database. The audio and the video track of selected segments are used together in concatenation to preserve audio-visual correlations. The input text is converted into a target phone chain and the database is searched for appropr...

Both audio and video watermarking enable copyright protection with owner or customer authentication and the detection of media manipulations. The available watermarking technology concentrates on single media like audio or video. But the typical multimedia stream consists of both video and audio data. Our goal is to provide a solution with robust and fragile aspects to guarantee authentication ...

Audio-visual quality assessment remains as a complex research field. A great effort is being made to understand how visual and auditory domains are integrated processed by humans. In this work, we analyzed compared the results of three psychophisical experiments that collected content scores given pool subjects. The include diverse audio-visual material, e.g., Sports, TV Commercials, Interviews...

This paper gives an overview of state of the art in algorithms and tools using video and audio features. In particular, we extensively survey the features that can be efficiently extracted from compressed video and audio, which include visual, motion, coding, and audio features. We also discuss typical applications of these compressed-domain features in video and audio indexing and analysis. Fi...

Multicast based audio/video collaboration system is one of representative applications in next generation internet. Adopting multicast technique could save bandwidth for multipoint-to-multipoint audio/video communication. Lack of ubiquitous native multicast limits the application, and current multicast based A/V collaboration systems lack effective control mechanism. This paper introduces one c...