Transdimensional Processing of Captured Data Computation

捕获数据计算的跨维度处理

• 批准号: 14380137
• 负责人: YAMAGUCHI Yasushi
• 金额: $ 9.54万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14380137/
• 关键词: Image Data; Shape Data; Transdimensional Processing; View Morphing; Painterly Morphing; Volumetric Data; Visual Cryptography; 透視投影

It has become much popular and easy to use real-world data such as three dimensional data as well as image data for computation and communication. In fact, real world data is rapidly increasing like range image, volumetric data, digital photo and video, etc. This kind of real world data is generally huge so that the computational and communication costs to handle such data is quite expensive. This study aimed at developing the efficient techniques for handling real-world data based on the concept of 'transdinesional processing'. The three targets are 'interpolation of 2D image', 'analysis of 3D data', and 'analysis of color'.Concerning the interpolation of 2D image, we made two achievements, namely 'painterly morphing using brush stroke model' and 'real-time view-morphing based on epipolar geometry.' The painterly morphing takes two images as input and generates a morphing sequence whose frames are all rendered in painterly style. The real-time view-morphing also takes two pictures of … More the same scene taken from the different view positions and synthesizes images from the in between viewpoints. This technique can generate images in real-time with texture mapping capability.This study also succeeded in developing 'surperspective projection of landscapes for geographical guide-map generation' and 'topological volume skeletonization of scalar field' in the sense of 3D data analysis. The former study can automatically generates a guide-map by subdividing the terrain model along ridge lines and ravine lines. The latter one provides us a new measure for analyzing the scalar field with volume skeletonization. It is applicable to design a transfer function for volume rendering.The study on color analysis achieved 'visual cryptography for natural images' and 'texture screening method for pencil drawing effects.' The visual cryptography is a kind of cryptography which can be decoded only with the human visual system. For instance, a hidden image appears if two OHP sheets with random dots are stacked together. The study developed a new technique for handling a natural image with high image quality. Less

它已经变得非常流行和容易使用的真实世界的数据，如三维数据以及图像数据的计算和通信。事实上，真实的世界数据正在迅速增加，如距离图像、体积数据、数字照片和视频等。这种真实的世界数据通常是巨大的，使得处理这种数据的计算和通信成本相当昂贵。本研究的目的是发展有效的技术，处理现实世界的数据的基础上的概念“transdinesional处理”。在二维图像的插值方面，我们取得了两项成果，即“基于笔触模型的绘画式变形”和“基于对极几何的实时视点变形”。绘画风格的变形以两张图像作为输入，并生成一个变形序列，其帧都以绘画风格呈现。实时视图变形还拍摄了两张照片， ...更多信息 从不同的观察位置拍摄相同的场景，并从两个观察点之间合成图像。该技术可实时生成具有纹理映射能力的图像，并成功地发展了“用于地理导图生成的景观超透视投影”和“标量场拓扑体分解”的三维数据分析方法。前者是将地形模型沿沿着山脊线和沟壑线进行细分，自动生成导航图。后一种方法为用体量子化分析标量场提供了一种新的手段。通过对颜色分析的研究，实现了“自然图像的视觉加密”和“铅笔画效果的纹理屏蔽方法”。视觉密码是一种只能用人类视觉系统才能破译的密码。例如，如果两张带有随机点的OHP纸张堆叠在一起，则会出现隐藏图像。该研究开发了一种处理高图像质量自然图像的新技术。少

项目成果

白石路雄, 山口 泰: "絵画風画像モーフィング"情報処理学会論文誌. 45・2. 659-667 (2004)

白石道雄、山口靖：“绘画式图像变形”日本信息处理学会会刊 45・2（2004 年）。

Y.Yamaguchi: "A Basic Evaluation Method of Subdivision Surfaces"Journal for Geometry and Graphics. 5・2. 145-155 (2002)

Y. Yamaguchi：“细分曲面的基本评估方法”几何与图形杂志 5・2（2002 年）。

Modeling Surperspective Projection of Landscapes for Geographical Guide‐Map Generation

• DOI: 10.1111/1467-8659.t01-1-00585
• 发表时间: 2002-09
• 期刊: Computer Graphics Forum
• 影响因子: 2.5
• 作者: Shigeo Takahashi;N. Ohta;Hiroko Nakamura;Yuriko Takeshima;I. Fujishiro

Enhancing Registration Tolerance of Extended Visual Cryptography

增强扩展视觉密码学的注册容错性

• 发表时间: 2004
• 期刊: Journal of Electronic Imaging 13・3
• 作者: M.Nakajima;Y.Yamaguchi
• 通讯作者: Y.Yamaguchi

Real-time View Morphing for Web Applications

Web 应用程序的实时视图变形

• 发表时间: 2002
• 期刊: Journal of WSCG 10・2
• 作者: M.Terasawa;Y.Yamaguchi;K.Odaka
• 通讯作者: K.Odaka