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21.
王卫仪 《数字社区&智能家居》2006,(1):182-183
基于静态图像的虚拟全景技术是一种在微机平台上能够实现的初级虚拟现实技术。它让人们在网上能够进行360度全景观察,从而体验三维的VR视觉世界一本文介绍了基于图像的虚拟全案技术、全景摄影的技巧、无缝拼接处理技巧、网络发布技巧以及其在行业中的应用等。 相似文献
22.
The Space of All Stereo Images 总被引:1,自引:0,他引:1
A theory of stereo image formation is presented that enables a complete classification of all possible stereo views, including non-perspective varieties. Towards this end, the notion of epipolar geometry is generalized to apply to multiperspective images. It is shown that any stereo pair must consist of rays lying on one of three varieties of quadric surfaces. A unified representation is developed to model all classes of stereo views, based on the concept of a quadric view. The benefits include a unified treatment of projection and triangulation operations for all stereo views. The framework is applied to derive new types of stereo image representations with unusual and useful properties. Experimental examples of these images are constructed and used to obtain 3D binocular object reconstructions. 相似文献
23.
介绍了360安全卫士注册表保护原理,以此得到针对计时器的突破思路,同时简述实际开发中遇到问题及解决方案。 相似文献
24.
为了避免隧道开挖过程中由对掌子面前方地下水赋存状态探测不准而发生涌水事故,通过隧道地质超前预报TGS360系统,利用地震波信号的瞬时幅度和瞬时频率与岩体结构面的关系,准确、高效地对掌子面前方的赋水体进行探测,同时基于TGS360pro隧道超前预报系统原理,采用谱元法对掌子面前方存在充水溶洞的地质模型进行数值正演模拟,在... 相似文献
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26.
Jae‐Hyun Jung Keehoon Hong Gilbae Park Indeok Chung Byoungho Lee 《Journal of the Society for Information Display》2010,18(7):527-534
Abstract— A 360°‐viewable cylindrical three‐dimensional (3‐D) display system based on integral imaging has been implemented. The proposed system is composed of a cylindrically arranged electroluminescent (EL) pinhole film, an EL film backlight, a barrier structure, and a transmission‐type flexible display panel. The cylindrically arranged point‐light‐source array, which is generated by the EL pinhole film reconstructs 360°‐viewable virtual 3‐D images at the center of the cylinder. In addition, the proposed system provides 3‐D/2‐D convertibility using the switching of EL pinhole film from a point light source to a surface light source. In this paper, the principle of operation, analysis of the viewing parameters, and the experimental results are presented. 相似文献
27.
Object detection on 360°images is a vital component of 3D environment perception. The existing methods either treat panoramic images (usually represented in equirectangular projection—ERP) as normal FoV images and endure the distortions or project them into the less-distortion format and narrow the FoV, leading to unsatisfactory performance in practical applications. To solve this problem, we propose a dual-projection 360°object detection network named Bip R-CNN, consisting of three modules: a bi-projection feature extractor, a cross-projection region-of-interest (RoI) searcher, and a classification and regression predictor. Specifically, we extract the equirectangular and corresponding dual-cubemap features simultaneously from the input images. Besides, Projection-Inter Feature Fusion and Projection-Intra Feature Fusion are designed to allow the mutual interaction between the bi-projective features and promote the integration of features at different scales, respectively. In the proposed cross-projection RoI Searcher, we search for the bounding box (BBox) locations on cubemap from the corresponding ERP spherical proposals, bridging the RoIs of two different projection formats at feature level. Finally, the cube proposals are used to detect objects in the last predictor module. Considering the scarceness of the existing panoramic dataset (only indoor scenes), we propose an efficient approach to convert conventional datasets into annotated panoramic datasets without manual intervention, increasing the diversity of panoramic datasets. Extensive experiments are conducted on the synthetic and real-world datasets with spherical criteria, demonstrating our superiority to other state-of-the-art solutions. 相似文献
28.
通过分析云冈矿12号层410盘区81010回采工作面上覆采空区情况,发现上覆3号层、7号层采空区中均存在积水,为消除该水患对回采工作的影响,须先行探放。文章结合81010回采工作面探放水实践,介绍了YCJ90/360矿用钻孔测井分析仪对钻孔轨迹的指导意义,以及测井技术对成孔准确性和可靠性的保障作用,证明其对采空区探放水钻孔施工具有必不可少的保障作用。 相似文献
29.
Although it is projected to have significant employment growth in the electrical construction industry, there are not enough young people to join the workforce. It is indispensable for the future of work in construction to explore emerging technologies and effectively attract the younger generation to the construction industry. This paper explores the innovative use of 360-degree immersive environments powered by virtual electricians to tell success stories of the electrical construction trades on the field (VR-Electricians) and understand how such an immersive storytelling approach can attract young people to join the industry. A pretest-posttest design was used for the VR-Electricians assessment. VR-Electricians was found to significantly enhance several aspects of students’ attitude towards the electrical construction industry. VR-Electricians was also rated as a highly usable and easy-to-use system. The outcomes of this study provide construction researchers and practitioners an understanding of how immersive storytelling can be used as a powerful technology-mediated method for attracting students to their field. 相似文献
30.
某电厂2×360MW机组锅炉排粉机运行中出现轴承轴向振动故障,解体检修发现振动故障是排粉机运行过程中2号轴承的内圈与轴颈配合出现松动,造成轴颈和轴凸肩摩擦、轴承内圈与轴颈磨损所致。更换排粉机全套转轴和轴承后故障消除,运行中轴承振动均处于良好状态。 相似文献