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In modern intelligent transportation systems, the video image vehicle detection system (VIVDS) is gradually becoming one of the popular methods at signalized traffic intersection due to its convenient installation and rich information content provided. However, in the current VIVDS, the camera usually is installed at the roadside poles or traffic light poles, which not only requires more than one...
Text within a camera grabbed image can contain a huge amount of meta data about that scene. Such meta data can be useful for identification, indexing and retrieval purposes.Detection of colored scene text is a new challenge for all camera based images.Common problems for text extraction from camera based images are the lack of prior knowledge of any kind of text features such as color, font, size...
Recently, researches on intelligent vehicles which can drive in urban environment autonomously become more popular. Traffic lights are common in cities and are important cues for the path planning of intelligent vehicles. In this paper, a robust and efficient algorithm to detect traffic lights based on video sequences captured by a low cost off-the-shelf video camera is proposed. The algorithm models...
In this paper we propose a system that annotates a user generated video based on the associated location metadata, by exploiting user-tagged image databases. An example of such a database is a photo sharing Web site such as Flickr where users upload their images and annotate them with various tags. The goal is to find the tags that have high probability of being relevant to the video without any complex...
This paper describes a system for automatically extracting meta-information on people from videos on the Web. The system contains multiple modules which automatically track people, including both faces and bodies, and clusters the people into distinct groups. We present new technology and significantly modify existing algorithms for body-detection, shot-detection and grouping, tracking, and track-clustering...
This paper presents a novel multi-touch interface based on binocular stereo vision, which achieves natural interactions through moving and clicking several fingers on an interface. The technology uses two cameras at different viewpoints to capture video images covering the interface in real time. We integrate skin-color information to track fingerpsilas motions. The clicking actions on the interface...
In this paper, we propose a novel 3D avatar generation scheme using a depth camera. Depth camera can capture both visual and depth information of moving objects by using infrared light source at video frame rate. Our method consists of two main steps: alpha matting and mesh generation. We present a novel alpha matting algorithm that combines visual and range information. It improves an existing natural...
A method for estimating temporally and spatially consistent dense depth maps in multiple camera setups is presented which is important for reduction of perception artifacts in 3D displays. For this purpose, initially, depth estimation is performed for each camera with the piece-wise planarity assumption and Markov Random Field (MRF) based relaxation at each time instant independently. During the relaxation...
In this paper we describe an image-based rendering chain that realizes the free viewpoint video functionality throughout the whole scene. We summarize the most common problems that may be encountered in such an application and provide different solutions to each core stage of the rendering process. Moreover, we propose a novel way to specify the virtual camera's path that moves throughout the scene...
There are many shot-change detection methods. They work well in videos without large motions and fast camera works. This paper proposes more robust method for detecting shot changes and recognizing their shot-change effects. The method uses the motion between frames and their estimation reliabilities. With motion estimation, we can have the correspondence between frames. But we have false estimation...
In this paper, we propose a method for smoke detection in outdoor video sequences. We assume that the camera is mounted on a pan/tilt device.The proposed method is composed of three steps. The first step is to decide whether the camera is moving or not. While the camera is moving, we skip the ensuing steps. Otherwise, the second step is to detect the areas of change in the current input frame against...
Virtual view synthesis is a key technology for future free viewpoint video and three-dimensional video applications. A novel asymmetric bidirectional view synthesis method is proposed for multi-view video plus depth based systems. An intermediate virtual view is synthesized based on two adjacent reference views, which are termed as the main view and the auxiliary view. The main view contains two-dimensional...
Video-to-cartoon is a promising technology for mobile applications. In this paper, we develop a video-to-cartoon system, which can analyze video content and generate the corresponding 3D cartoon. The proposed system consists of two major parts: the media analysis module and the cartoon rendering module, where the former is to extract the 3D information from 2D video and the latter is to roughly reconstruct...
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