Results 211 to 220 of about 7,581 (266)
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Quality assessment of watermarked 3D polygonal models
SPIE Proceedings, 2006In this paper, we present the design and results of subjective tests for evaluating the perceptibility of digital watermarks in 3D polygonal models. Based on the results we investigate different types of metrics with respect to their usefulness as predictors for the perceived visual quality of models that have been modified using a specific ...
Wolfgang Funk, Jennifer Prasiswa
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Matching and fusing 3D-polygonal approximations for model-generation
Proceedings of 1st International Conference on Image Processing, 2002Automatic generation of 3D-wireframe models from samples of images requires methods for data integration. Input is a sequence of 3D-segmentation data from different viewpoints of one single object and a coarse estimation of the movement of the viewpoint from one view to the next.
Andreas Winzen, Heinrich Niemann
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Aligning 3D Polygonal Models with Improved PCA
2006PCA is a useful tool for pose normalization in 3D model retrieval, in this paper, we analyze its basic principle, point out its shortcoming and give our solution. Experiments show that our methods can enhance the robustness of PCA and align 3D models well.
Wei Liu, Yuanjun He
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Robust watermarking of 3D polygonal models based on vertex scrambling
Proceedings Computer Graphics International 2003, 2004We propose a robust 3D model watermarking scheme based on distributing the information corresponds to a bit of the watermark over the entire model via vertex scrambling. The scheme also adaptively varies the strength of the watermark signal with reference to the local geometry and embeds watermark information into the model by modifying the length of ...
Yu Zhi-qiang +2 more
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Robust Watermarking for Copyright Protection of 3D Polygonal Model
2004We describe a robust watermarking technique for proving ownership claims on 3D polygonal models. To make the proposed technique robust against a variety of attacks, a wavelet-based multiresolution analysis is used for a polygonal mesh model. First, we generate the simple mesh model and wavelet coefficient vectors by applying a multiresolution analysis ...
Wan Hyun Cho +3 more
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3D Human Head Tracking using Hypothesized Polygon Model
2005 IEEE International Conference on Systems, Man and Cybernetics, 2006Vision based analysis of human action is a fundamental issue for a robot to interact intelligently with a human. We present a technique for 3D human head tracking using stereo camera. We apply the particle filter algorithm to the problem of head tracking in a sequence of depth map received from a stereo camera. Posterior distribution of human head pose
Kazunori Terada +2 more
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Static linking of phonemes to polygonal 3D model's facial expressions
Proceedings of the 21st Spring Conference on Computer Graphics, 2005In terms of reducing efforts of an animator in creating facial animation keyframes we developed a system for automatic keyframe generation using MaxScript control script. Input parameter for the script is a parameter file containing phonemes of the prerecorded soundtrack and their durations.
Selma Rizvic +3 more
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Browsing of 3D polygonal models using an immersive display
2001 IEEE International Conference on Systems, Man and Cybernetics. e-Systems and e-Man for Cybernetics in Cyberspace (Cat.No.01CH37236), 2002We have developed a browsing system for 3D polygonal model databases that allows users to browse 3D models interactively using an immersive display. Our immersive display is a three-dimensional room with walls, a ceiling and a floor acting as virtual screens (3 m/spl times/3 m/spl times/3 m).
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Applying 3D-Scan Systems RangeVision for Precision Preparing of Polygonal 3D-Models
2020 International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM), 2020Many different applications of product inspections have found a significant advantage by the use of 3D-scanners, especially when working with complex surfaces, where traditional inspection tools have significant limitations. This work deals with the structured light 3D-scanning based on fringe-pattern and obtaining polygonal mesh models (stl-models) of
Mikhail A. Petrov, Ibrahim S. A. El-Deeb
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Building Polygon Rectification for Automated 3D Building Models
2018 14th IEEE International Conference on Signal Processing (ICSP), 2018A 3D urban model is important in urban planning and game industries. However, creating these 3D models are labor-intensive. In order to automate laborious steps, a GIS (Geographic Information System) and CG integrated system is proposed for automatically generating 3D building models, based on building polygons (building footprint) on a digital map ...
Kenichi SUGIHARA, Takahiro MURASE
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