Light field rendering

Levoy, Marc; Hanrahan, Pat

doi:10.1145/237170.237199

Cited by 3,434 publications

(2,293 citation statements)

References 21 publications

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“…In-between views are either left out or have to be computed via interpolation. Other purely image-based techniques such as Light Fields [Levoy and Hanrahan 1996] allow for arbitrary viewpoints, but suffer from large data sizes and are thus not well-suited for web-based applications. A more sophisticated approach that is capable of reproducing the view-dependent aspects of object appearance under fixed lighting are Surface Light Fields (SLF) [Wood et al 2000].…”

Section: Previous Work In Presentation and Dissemination Over The Intmentioning

confidence: 99%

WebGL-based streaming and presentation of objects with bidirectional texture functions

Schwartz

Ruiters

Weinmann

et al. 2013

J. Comput. Cult. Herit.

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Museums and Cultural Heritage institutions have a growing interest in presenting their collections to a broader community via the Internet. The photo-realistic presentation of interactively inspectable virtual surrogates is one of the most challenging problems in this field. For this purpose, we seek to employ not only a 3D geometry but also a powerful material representation capable of reproducing the full visual appeal of an object. In this paper, we propose a WebGL-based presentation framework in which reflectance information is represented via Bidirectional Texture Functions. Our approach works out-of-the-box in modern web browsers and allows for the progressive transmission and interactive rendering of digitized artifacts consisting of 3D geometry and reflectance information. We handle the huge amount of data needed for this representation by employing a novel progressive streaming approach for BTFs which allows for the smooth interactive inspection of a steadily improving version during the download. We demonstrate an interesting use-case of this technique at a cross-section of Cultural Heritage, medical education and research and provide an evaluation of the capabilities of our framework in the scope of BTF compression and transmission.

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Section: Previous Work In Presentation and Dissemination Over The Intmentioning

confidence: 99%

WebGL-based streaming and presentation of objects with bidirectional texture functions

Schwartz

Ruiters

Weinmann

et al. 2013

J. Comput. Cult. Herit.

View full text Add to dashboard Cite

show abstract

“…For example, the Lumigraph and Lightfield resample all captured rays and rebin them into a 4D two-plane parameterization [6], [16]. Rebinning the input images produces a representation that facilitates the desired application.…”

Section: Overview Of Multiperspective Panoramasmentioning

confidence: 99%

Stereo reconstruction from multiperspective panoramas

Shum

Tang

et al. 2004

IEEE Trans. Pattern Anal. Machine Intell.

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Abstract-A new approach to computing a panoramic (360 degrees) depth map is presented in this paper. Our approach uses a large collection of images taken by a camera whose motion has been constrained to planar concentric circles. We resample regular perspective images to produce a set of multiperspective panoramas and then compute depth maps directly from these resampled panoramas. Our panoramas sample uniformly in three dimensions: rotation angle, inverse radial distance, and vertical elevation. The use of multiperspective panoramas eliminates the limited overlap present in the original input images and, thus, problems as in conventional multibaseline stereo can be avoided. Our approach differs from stereo matching of single-perspective panoramic images taken from different locations, where the epipolar constraints are sine curves. For our multiperspective panoramas, the epipolar geometry, to the first order approximation, consists of horizontal lines. Therefore, any traditional stereo algorithm can be applied to multiperspective panoramas with little modification. In this paper, we describe two reconstruction algorithms. The first is a cylinder sweep algorithm that uses a small number of resampled multiperspective panoramas to obtain dense 3D reconstruction. The second algorithm, in contrast, uses a large number of multiperspective panoramas and takes advantage of the approximate horizontal epipolar geometry inherent in multiperspective panoramas. It comprises a novel and efficient 1D multibaseline matching technique, followed by tensor voting to extract the depth surface. Experiments show that our algorithms are capable of producing comparable high quality depth maps which can be used for applications such as view interpolation.

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“…Solving the problem of unexpected curves with the image technique Chen used in View Interpolation, Seitz [4] applied the principles of the projective geometry and called his way View Morphing. Levoy [8] interpreted that the 2D slices in a 4D function made a set using new images and created images in new points of view by sampling with no 3D information such as particular point matching. Horry [14] suggested Tour into the Picture, with which you can do animations by only using a piece of 2D image.…”

Section: Related Workmentioning

confidence: 99%

Mobile Animation Algorithm for Cyber Museum

Hong

Kim

2003

Lecture Notes in Computer Science

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Abstract. Communication technologies have been brought tremendous change to various aspects of an ever-fast changing world at present. Particularly, the use of Internet and cyberspace is widespread in every corner of our life. In this paper we propose a gesture algorithm using an animation technology. It was developed for educational purposes, and accessible through the WWW of Internet. The visual processes can be adapted for a variety of fields. For instance, in Cyber Clam Museum, the visual processes were used to design a screen with a realistic image and create a system that makes possible show at 360. Therefore, in the system, mobile hosts can observe the detailed clam's structure and save the image. This proposed algorithm provides multiple techniques to user may manipulate, visualize and interact with image on the Web.

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Light field rendering

Cited by 3,434 publications

References 21 publications

WebGL-based streaming and presentation of objects with bidirectional texture functions

WebGL-based streaming and presentation of objects with bidirectional texture functions

Stereo reconstruction from multiperspective panoramas

Mobile Animation Algorithm for Cyber Museum

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