Proceedings 2nd IEEE and ACM International Workshop on Augmented Reality (IWAR'99)最新文献_第2页

A method for calibrating see-through head-mounted displays for AR 一种校准用于AR的透明头戴式显示器的方法

Proceedings 2nd IEEE and ACM International Workshop on Augmented Reality (IWAR'99) Pub Date : 1999-10-20 DOI: 10.1109/IWAR.1999.803808

E. McGarrity, M. Tuceryan

引用次数: 48

Calibration propagation for image augmentation 图像增强的校准传播

Proceedings 2nd IEEE and ACM International Workshop on Augmented Reality (IWAR'99) Pub Date : 1999-10-20 DOI: 10.1109/IWAR.1999.803810

D. Stricker, Nassir Navab

{"title":"Calibration propagation for image augmentation","authors":"D. Stricker, Nassir Navab","doi":"10.1109/IWAR.1999.803810","DOIUrl":"https://doi.org/10.1109/IWAR.1999.803810","url":null,"abstract":"Calibration is the first step in image augmentation. Classical approaches compute the projection matrix given 3D points of the scene and their 2D image correspondences. Different auto-calibration algorithms have been recently developed by the computer vision community. They do not use 3D-2D correspondences, but need many 2D-2D correspondences over long sequence of images to provide stable results. We propose a calibration propagation procedure which is in-between the two previous approaches. Starting from one calibrated image, the unknown camera parameters and position are computed for a second image. In particular the paper presents a method for extracting the focal length and the 3D structure, while other camera intrinsic parameters remain invariant. In practice, for many professional cameras, the principal point is approximately at the center of the image and the aspect ratio is given by camera specification. Calibration propagation is relevant to augmented reality applications, e.g. video see through HMD with zooming capability since it enables image augmentation for a number of camera views with changing intrinsic parameters. We present results on synthetic images showing the theoretical validity and performance of the method. We then use real data to demonstrate the potential of this approach for image augmentation applications in industrial maintenance assistance and architectural design.","PeriodicalId":435326,"journal":{"name":"Proceedings 2nd IEEE and ACM International Workshop on Augmented Reality (IWAR'99)","volume":"6 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121013010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Table-top spatially-augmented realty: bringing physical models to life with projected imagery 桌面空间增强现实:通过投影图像将物理模型带入生活

Proceedings 2nd IEEE and ACM International Workshop on Augmented Reality (IWAR'99) Pub Date : 1999-10-20 DOI: 10.1109/IWAR.1999.803807

R. Raskar, G. Welch, Wei-Chao Chen

引用次数: 121

Scene augmentation via the fusion of industrial drawings and uncalibrated images with a view to marker-less calibration 通过融合工业图纸和未校准图像的场景增强，以实现无标记校准

Proceedings 2nd IEEE and ACM International Workshop on Augmented Reality (IWAR'99) Pub Date : 1999-10-20 DOI: 10.1109/IWAR.1999.803813

Nassir Navab, B. Bascle, M. Appel, Echeyde Cubillo

{"title":"Scene augmentation via the fusion of industrial drawings and uncalibrated images with a view to marker-less calibration","authors":"Nassir Navab, B. Bascle, M. Appel, Echeyde Cubillo","doi":"10.1109/IWAR.1999.803813","DOIUrl":"https://doi.org/10.1109/IWAR.1999.803813","url":null,"abstract":"The application presented augments uncalibrated images of factories with industrial drawings. Industrial drawings are among the most important documents used during the lifetime of industrial environments. They are the only common documents used during design, installation, monitoring and control, maintenance, update and finally dismantling of industrial units. Leading traditional industries towards the full use of virtual and augmented reality technology is impossible unless industrial drawings are integrated into our systems. We provide the missing link between industrial drawings and digital images of industrial sites. On one hand, this could enable us to calibrate cameras and build a 3D model of the scene without using any calibration markers. On the other hand it brings industrial drawings, floor map, images and 3D models into one unified framework. This provides a solid foundation for building efficient enhanced virtual industrial environments. The augmented scene is obtained by perspective warping of an industrial drawing of the factory onto its floor, wherever the floor is visible. The visibility of the floor is determined using probabilistic reasoning over a set of clues including (1) floor color/intensity (2) image warping and differencing between an uncalibrated stereoscopic image pair using the ground plane homography. Experimental results illustrate the approach.","PeriodicalId":435326,"journal":{"name":"Proceedings 2nd IEEE and ACM International Workshop on Augmented Reality (IWAR'99)","volume":"54 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116534919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 57

Registration with a zoom lens camera for augmented reality applications 为增强现实应用注册变焦镜头相机

Proceedings 2nd IEEE and ACM International Workshop on Augmented Reality (IWAR'99) Pub Date : 1900-01-01 DOI: 10.1109/IWAR.1999.803811

Gilles Simon, M. Berger

引用次数: 14