In this paper we present a novel way of creating mosaics from an MPEG video sequence. Two original aspects of our work are that (1) we explicitly compute camera motion between frames and (2) we deduce the camera motion directly from the motion vectors encoded in the MPEG video stream. This enables us to create mosaics more simply and quickly than with other methods. Abstract In this paper we pr...

This paper aims to propose a novel, robust, and simple method for obtaining a human 3D face model and camera pose (position and orientation) from a video sequence. Given a video sequence of a face recorded from an off-the-shelf digital camera, feature points used to define facial parts are tracked using the ActiveAppearance Model (AAM). Then, the face’s 3D structure and camera pose of each vide...

INTRODUCTION Although videos of surgical procedures are useful as an educational tool, the recording of trauma surgeries in emergency situations is difficult. We describe an inexpensive and practical shooting method using a commercially available head-mounted video camera. METHODS We used a ContourHD 1080p Helmet Camera (Contour Inc., Seattle, Washington, USA.). This small, self-contained vid...

A hybrid image registration method for the purpose of stabilizing a video captured by a moving camera is presented. The following assumptions are made: 1) The provided video contains moving targets. 2) The camera capturing the video is sufficiently far from the scene so that variation in scene depth across an image is negligible compared to the distance of the camera to the scene. 3) The area c...

This paper presents a video acquisition system that can learn automatic video capture from human’s camera operations. Unlike a predefined camera control system, this system can easily adapt to its environment changes with users’ help. By collecting users’ camera-control operations under various environments, the control system can learn video capture from human, and use these learned skills to ...

In this paper, we describe a simple but effective and fast video activity detection algorithm to provide an efficient pre-processing tool for video camera feeds. It also presents a range of applications, including post production of TV camera video streams, analysis of surveillance videos, visual scene classification, and camera control for automated recordings etc. Given a video sequence, our ...

As networks of video cameras are being installed in many applications, modeling and inference strategies in video networks have captured more and more interest. There are many challenge problems, such as (i) traditional computer vision challenges in tracking and recognition, robustness to pose, illumination, occlusion, clutter; recognition of objects and activities; (ii) aggregating local infor...

In this paper, a new teleconference system by using Gigabit Ethernet based omni-directional camera system and flexible middleware system in realtime and bi-directional video transmission is introduced. The omni-directional image has more advantages than conventional one-directional camera in that it provides a wider view than a single directional camera and able to realize flexible teleconferen...

A novel method for region of interest tracking and recording video is presented. The proposed method is based on the FlyCam system [4], which produces high resolution and wide-angle video sequences by stitching the video frames from multiple stationary cameras. The method integrates tracking and recording processes, and targets applications such as classroom lectures and video conferencing. Fir...

360° video requires human viewers to actively control “where” to look while watching the video. Although it provides a more immersive experience of the visual content, it also introduces additional burden for viewers; awkward interfaces to navigate the video lead to suboptimal viewing experiences. Virtual cinematography is an appealing direction to remedy these problems, but conventional method...