Shadow Inducers: Inconspicuous Highlights for Casting Virtual Shadows on OST-HMOs
Shadow Inducers: Inconspicuous Highlights for Casting Virtual Shadows on OST-HMOs
复制标题
阴影诱导器：在 OST-HMO 上投射虚拟阴影的不显眼亮点
DOI：
10.1109/vr.2019.8798049
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
F. Shibata
中科院分区：
文献类型：
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作者：
S. Manabe;Sei Ikeda;Asako Kimura;F. Shibata
虚拟阴影为确定虚拟对象与真实的场景之间的位置关系提供了重要线索。然而，在没有遮挡能力的光学透视头戴式显示器上绘制真实的场景中的阴影是困难的。在之前的工作中，我们投射虚拟阴影不是物理光衰减，而是由虚拟物体引起的亮度感应，称为阴影诱导物，其围绕阴影区域以逐渐放大真实的场景图案的强度[4]。然而，因为阴影诱导器是预先准备的，所以阴影的形状是恒定的，真实的场景阴影被限制在平坦表面，并且大的视点改变是不可能的。在这个演示中，我们提出了一种方法来产生阴影诱导在真实的时间，可以改变虚拟对象的形状和用户的观点。在该方法中，根据阴影的出现，用代表人类视觉特性的高斯差（DOG）逐渐放大周围的亮度。用户可以观察到移动和变形的虚拟物体在真实的桌面和其他非平面物体上的阴影。
Virtual shadows provide important cues to determine the positional relationship between virtual objects and a real scene. However, it’ s difficult to render shadows in the real scene on optical see-through head-mounted displays without occlusion-capability. In the previous work, we cast virtual shadows not with physical light attenuation but with brightness induction caused by virtual objects, referred to as shadow inducers, which surround the shadow area to gradually amplify the intensity of the real scene pattern [4]. However, because the shadow inducer was prepared beforehand, the shape of the shadow is constant, the real scene shadowing is limited to a flat surface, and a large of viewpoint change is impossible. In this demonstration, we propose a method to generate shadow inducers in real time that can change the shape of virtual objects and the viewpoint of users. In this method, depending on the appearance of shadows, the surrounding luminance is gradually amplified with the difference of gaussian (DOG) representing characteristics of human vision. Users can observe shadows of moving and deforming virtual objects on a real tabletop and other non-planar objects.
DOI：
10.1109/ismar.2003.1240690
发表时间：
2003-10
期刊：
The Second IEEE and ACM International Symposium on Mixed and Augmented Reality, 2003. Proceedings.
影响因子：
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作者：
Natsuki Sugano;H. Kato;K. Tachibana
通讯作者：
Natsuki Sugano;H. Kato;K. Tachibana
基于光学透视显示器的亮度感应投射虚拟阴影
DOI：
--
发表时间：
2018
期刊：
影响因子：
--
作者：
S. Manabe;S. Ikeda;F. Shibata;and A. Kimura
通讯作者：
and A. Kimura