نتایج جستجو برای: real time video

تعداد نتایج: 2273750  

1997
Ayman A. M. Ibrahim Maher Hamdi

We are concerned about the transmission of Variable Bit Rate (VBR) video traffic over Asynchronous Transfer Mode (ATM) networks. A good characterization of VBR sources allows the implementation of efficient Connection Admission Control (CAC) and Police functions. We show that the Gamma distribution presents a reliable tool for modeling the aggregate video traffic entering the multiplexer. It th...

2012
M. S. Temiz S. Dogan

In this paper, detailed studies have been performed for developing a real time system to be used for surveillance of the traffic flow by using monocular video cameras to find speeds of the vehicles for secure travelling are presented. We assume that the studied road segment is planar and straight, the camera is tilted downward a bridge and the length of one line segment in the image is known. I...

1999
Alan J. Lipton

This paper presents a new paradigm for data interaction called virtual video. The concept is that video streams can be interactively augmented in real-time by both addition and removal of visual information. Removed information must be seamlessly replaced with relevant “background” information. Added information can be in the form of computer graphics, as in conventional augmented reality, or i...

2003
Vasileios Mezaris Ioannis Kompatsiaris Eleni Kokkinou Michael G. Strintzis

In this paper, a novel algorithm for the real-time, unsupervised segmentation of image sequences in the compressed domain is proposed. The algorithm utilizes the motion information present in the compressed stream in the form of P-frame forward motion vectors, as well as basic color information in the form of DC coefficients present in I-frames. An iterative rejection scheme based on the biline...

2005
Edward Rosten Gerhard Reitmayr Tom Drummond

Augmented reality (AR) provides an intuitive user interface to present information in the context of the real world. A common application is to overlay screen-aligned annotations for real world objects to create in-situ information displays for users. While the referenced object’s location is fixed in the view the annotating labels should be placed in such a way as to not interfere with other c...

2009
Ji-Hyung Lee Yoon-Seok Choi Bon-Ki Koo Chi-Jung Hwang

According to advancements in video technology, there are lots of needs for various special effects of videos. The conventional image-transform effects could be applied to video streams, but non-photorealistic rendering effects are not easy to apply. For example, cartoon or illustration effects have expensive costs in video transformation which makes it difficult to execute in real-time. In this...

Journal: :Computer Vision and Image Understanding 2004
Kok Meng Pua John M. Gauch Susan Gauch Jedrzej Z. Miadowicz

In this paper, we present a real time system for detecting repeated video clips from a live video source such as news broadcasts. Our system utilizes customized temporal video segmentation techniques to automatically partition the digital video signal into semantically sensible shots and scenes. As each frame of the video source is processed, we extract auxiliary information to facilitate repea...

2008
Shu Jiang

Autonomous robots have performed tasks that are too dangerous for humans and gone places no human has ever gone. From tactical robots that detect and disrupt explosives in war zone, to Mars rovers that roam the Martian surface, wireless communication between these robots and their hosts is an essential part of the overall system design. A host can utilize the wireless communication channel to o...

2004
Yafei Sun Nicu Sebe Michael S. Lew Theo Gevers

There is a growing trend toward emotional intelligence in humancomputer interaction paradigms. In order to react appropriately to a human, the computer would need to have some perception of the emotional state of the human. We assert that the most informative channel for machine perception of emotions is through facial expressions in video. One current difficulty in evaluating automatic emotion...

2000
Chris C. H. Ngan Kam-yiu Lam

In previous years, various real-time scheduling techniques have been proposed to improve the performance of a distributed multimedia system. However, not much work has been done on how a client player can play multiple videos concurrently. In this paper, we have designed a distributed multimedia system where a client player can play different videos at the same time. We introduce two mechanisms...

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