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Image stitching are ideally suited for applications such as image stabilization, summarization, and the creation of panoramic mosaics. This paper proposes a approach to stitch images fast and with high quality.Image alignment algorithms can discover the correspondence relationships among images with varying degrees of overlap. In this process, they uses SIFT to look for the trait points, and uses...
This paper presents an Augmented Reality (AR) system for physical text documents that enable users to click a document. In the system, we track the relative pose between a camera and a document to overlay some virtual contents on the document continuously. In addition, we compute the trajectory of a fingertip based on skin color detection for clicking interaction. By merging a document tracking and...
In service robot applications, tracking and visual servoing are essential to find objects and position the end-effector of a robot to manipulate an object. In this paper, we propose a high-speed object tracking method based on a window approach and a local feature descriptor, SURF (Speeded-Up Robust Features). The visual servo controller uses geometrical features that are computed directly from the...
We present a method to estimate the position and the orientation of a hand from a captured image for applications which need to manipulate instinctively and freely using a hand. We use a hand as a tool instead of an input device such as a mouse or a marker, and we use only a web camera instead of multiple-camera or an infrared camera, in order to improve mobility and usability. We focused on four...
The process of the alternative functioning of the mobile phones shall be detailed keeping in mind that these devices have less memory and less computing capacity. A simple background subtraction algorithm process may be used, that projects a moving object in consideration to be in the current view, when the subtraction of the current captured image and the background reaches a certain threshold. We...
In this paper, a particle swarm optimization (PSO) based camera calibration approach is presented to determine the external and internal calibration parameters from the knowledge of a given set of points in object space. First, the image formation model for a pinhole camera is formulated in terms of a feed-forward neural network (NN) and then this neural network is trained using particle swarm optimization...
A typical task in mobile robotics or augmented reality applications is self-localization in an unknown environment. In the robotics community the localization and mapping of the unknown environment is called SLAM (simultaneous localization and mapping). Important constraints in SLAM using visual input are real-time processing and robustness against motion blur or jitter. The contribution of this paper...
An overview of a probabilistic cooperative tracking approach is presented in this paper. First, a new tutorial-like detailed explanation of the condensation algorithm by Isard and Blake, (1998) is described. Then we apply the probabilistic tracker to track an object (easily extendable to multiple objects) according to multiple degrees of freedom of the cameras that are able to pan, tilt and zoom....
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