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We propose a robust background subtraction method for multi-view images, which is essential for realizing free viewpoint video where an accurate 3D model is required. Most of the conventional methods determine background using only visual information from a single camera image, and the precise silhouette cannot be obtained. Our method employs an approach of integrating multi-view images taken by multiple...
Free viewpoint video enables the visualisation of a scene from arbitrary viewpoints and directions. However, this flexibility in video rendering provides a challenge in 3D media for achieving spatial synchronicity between the audio and video objects. When the viewpoint is changed, its effect on the perceived audio scene should be considered to avoid mismatches in the perceived positions of audiovisual...
Most quality models for stereoscopic presentations are dedicated to measuring quality degradation caused by compression artefacts. However, non-compression distortions induced during acquisition and presentation usually have significant influence on 3D viewing experience. In this paper, we propose an objective metric for viewing experience assessment by taking camera baseline and binocular distortion...
In order to reflect the actual deformation degree and trend of building structure and foundation pit, it was necessary to carry out the deformation measurement of subway construction and information management of construction monitoring. At the present moment, GIS had been applied in many fields but rare in analysis of deformation monitoring data. In this paper, GIS, with powerful capabilities of...
Virtual Scene Technology is one of the important parts of VR systems. It takes charge of Vision issue in VR systems, and is the most important fact to affect the immersive of the system. There are many problems in training simulation of artillery reconnaissance radar, such as the battlefield environment isn't living, the load of assemble and disassemble is large, the training cost is high. The virtual...
In this paper, based on the in-depth research of existing 3D modeling algorithms, a new graphical 3D modeling visualization algorithm is proposed. This algorithm can use relatively smaller images demand to generate 3D model with higher precision, thus the efficiency of the 3D modeling realization will be greatly improved. Moreover, this algorithm is simple to achieve, easy to operate, and therefore...
We propose a parallel phase-shifting digital holography capable of simultaneously capturing both outside three-dimensional (3D) information of the object such as a surface of an object which human being can perceive (visible information) and internal 3D information of the object (invisible information) using a visible laser light and an invisible laser light. This technique can carry out phase-shifting...
In the last few years the eLearning environments have known a very accelerated development becoming a very important educational alternative to the classical teaching methods. Together with the global extend of the Internet infrastructure, the multimedia elements have been more and more used as learning objects providing new methods of information presentation and user interaction techniques. One...
Minimally invasive surgery offers advantages that make it the best choice for many diseases. Modern technologies give a great support to this kind of surgical procedures through medical image processing and visualization, 3D organ's reconstruction and intra-operative surgical guidance. In this paper is presented an advanced visualization and navigation system and the surgeon has the possibility to...
Although traditional line illustrations are very abstract representations, they can communicate the form of an object effectively. This is only possible by the use of perceptual cues, mastered by professional artists. To create effective line illustrations from 3D models, it is important to use these perceptual cues to avoid visual dissonance and ambiguity, and also to create visual effects like shading,...
The main objective of 3D mesh watermarking is to maximize the watermark strength while minimizing the visual distortion. In this paper, we propose a novel 3D mesh watermarking based on the human visual system and mesh curvature. We analyze the regionpsilas mean curvature and fluctuation of curvature, and then choose the appropriate regions with high visual masking degree, in order to embed the watermark...
The 3D reconstruction based on the video image in real-time is an important problem, such as computer vision, computer graphics. The accuracy of the model is even the center issue of these fields. After considering the polyhedral visual hull (PVH) reconstruction method, this paper introduces a model optimized method based on the image feature points matching. In this paper, we present an algorithm...
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