Highly compressed 3D digital archives by illuminating DCT modulated pattern light.

通过照明 DCT 调制图案光来高度压缩 3D 数字档案。

• 批准号: 14550417
• 负责人: SATO Kosuke
• 金额: $ 2.11万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14550417/
• 关键词: Mixed Reality; Image-Based Rendering; Digital Archives; Photometric Environment Reproduction; 能動照明; 全周計測

This research has resulted an extension of Image-Based Rendering (IBR) to represent the specularity of a real object in a virtual environment. A photo of an object captures an image consisting of several physical components; its shape, color, texture, specularity and the lighting condition. This research is intended as an investigation of how to preserve the specularity of an object, which is considerably sensitive to the lighting condition. In the Mixed Reality world, it needs to overlay virtual objects onto real scene with harmonizing the photometric consistency. Many illumination devices usually consist of light sources like light bulbs or LEDs. For reproduction dynamic light environments, it has to adapt the number of light sources and their positions to the current light environments in real-time. To overcome this implemental difficulty, we suggested using LCD panel not as image display device but as illumination device with backlight of LCD. We have developed a new illumination device "LCD cube" for keeping photometric consistency in this research, which is consisting of six inward-pointing LCDs. The system can reproduce arbitrary light environments to the object which is placed at the center of "LCD cube". In order to avoid degrading the image quality due to lower dynamic range of CCD camera, we have produced an idea to capture several images by changing the electronic exposure time of the camera: it generates the high dynamic range light environments by mixing the set of images. As demonstrating, we have presented the method to display high dynamic range light environments by "LCD cube" for Image-Based Lighting. Also, in this research, we have proposed the method for high dynamic range light environments reproduction to avoid degrading the image quality due to dynamic range of CCD camera and LCD display. In addition, we have performed a light reproduction that is a real-time transmission system of light environments with "LCD cube".

这项研究导致了基于图像的渲染（IBR）的扩展，以表示虚拟环境中真实对象的镜面性。对象的照片捕获了由几个物理组件组成的图像；它的形状，颜色，纹理，镜面和照明条件。这项研究旨在研究如何保留对象的镜面，这对照明条件非常敏感。在混合现实世界中，它需要叠加虚拟对象，并以协调光度一致性。许多照明设备通常由灯泡或LED等光源组成。为了使繁殖动态光环境，它必须实时调整光源及其位置的数量及其位置。为了克服这个实施难度，我们建议使用LCD面板不是图像显示设备，而是用LCD背光的照明设备。我们已经开发了一种新的照明设备“ LCD Cube”，用于在这项研究中保持光度一致性，该研究由六个内向的LCD组成。该系统可以将任意光环境重现给放置在“ LCD Cube”中心的对象。为了避免由于CCD摄像机的动态范围较低而降低图像质量，我们产生了一个想法来通过更改摄像机的电子曝光时间来捕获多个图像：它通过混合图像集来生成高动态范围光线环境。作为证明，我们介绍了通过“ LCD Cube”来显示高动态范围光环环境的方法，用于基于图像的照明。同样，在这项研究中，我们提出了用于高动态范围光环境繁殖的方法，以避免由于CCD摄像头和LCD显示器的动态范围而降低图像质量。此外，我们还进行了光复制，这是一个带有“ LCD Cube”的光环境的实时传输系统。

项目成果

Kosuke Nakayama: "A LCD Cube Transporting High Dynamic Range Light Environments"Proc. of the 2nd International Symposium on Mixed and Augmented Reality. 323-324 (2003)

Kosuke Nakayama：“传输高动态范围光环境的液晶立方体”Proc。

日向匡史, 佐藤宏介, 井白征士: "光切断時間の時空間マッチングによる高精度三次元計測"計測自動制御学会第7回パターン計測シンポジウム. 33-36 (2002)

Tadashi Hinata、Kosuke Sato、Seiji Ijiro：“通过光学切割时间的时空匹配进行高精度三维测量”仪器与控制工程师学会第七届图案测量研讨会33-36（2002）。

Yukiko Yanagawa: "A Support System for Designing Coloration with Mixed Reality Display"Transactions of the Institute of Systems, Control and Information Engineers. Vol.16,No.6. 1-9 (2003)

Yukiko Yanakawa：“混合现实显示设计色彩的支持系统”系统、控制和信息工程师研究所的交易。

多井堅一郎, 金谷一朗, 塚本敏夫, 佐藤宏介: "高精細3次元形状データを用いた拓本画像作成"日本情報考古学会論文誌. Vol.8,No.2. 1-9 (2003)

Kenichiro Tai、Ichiro Kanaya、Toshio Tsukamoto、Kosuke Sato：“使用高清 3D 形状数据进行摩擦图像创作”日本信息考古学会会刊第 8 卷，第 2 期（2003 年）。

Kosuke Nakayama: "A LCD Cube Transporting High Dynamic Range Light Environments"Proc.of the 2nd International Symposium on Mixed and Augmented Reality. 323-324 (2003)

Kosuke Nakayama：“传输高动态范围光环境的 LCD 立方体”，第二届混合与增强现实国际研讨会论文集。