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Proceedings Article

View Synthesis of Scenes with Man-Made Objects Using Uncalibrated Cameras.

TL;DR: This work proposes a scheme for view synthesis of scenes containing man-made objects from images taken by arbitrary, uncalibrated cameras that computes z-buffer values that can be used for handling occlusions in the synthesized view, but requires the computation of the infinite homography.
Abstract: We propose a scheme for view synthesis of scenes containing man-made objects from images taken by arbitrary, uncalibrated cameras. Under the assumption of availability of the correspondence of three vanishing points,in general position, our scheme computes z-buffer values that can be used for handling occlusions in the synthesized view. This requires the computation of the infinite homography. We also present an alternate formulation of the technique which works with the same assumptions but does not require infinite homography computation. We present experimental results to establish the validity of both formulations.
Citations
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Journal ArticleDOI
01 Feb 2007
TL;DR: Two techniques are proposed for novel view synthesis of scenes containing man-made objects from images taken by arbitrary, uncalibrated cameras under the assumption of availability of the correspondence of three vanishing points.
Abstract: We have attempted the problem of novel view synthesis of scenes containing man-made objects from images taken by arbitrary, uncalibrated cameras. Under the assumption of availability of the correspondence of three vanishing points, in general position, we propose two techniques. The first is a transfer-based scheme which synthesizes new views with only a translation of the virtual camera and computes z-buffer values for handling occlusions in synthesized views. The second is a reconstruction-based scheme which synthesizes arbitrary new views in which the camera can undergo rotation as well as translation. We present experimental results to establish the validity of both formulations.

1 citations


Cites background from "View Synthesis of Scenes with Man-M..."

  • ...Preliminary results for both schemes with only a translation of the virtual camera have appeared in (Sharma et al., 2004)....

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References
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01 Jan 1999
TL;DR: A perspective (central) projection camera is represented by a matrix that can be computed from the correspondence of four (or more) points.
Abstract: A perspective (central) projection camera is represented by a matrix. The most general perspective transformation transformation between two planes (a world plane and the image plane, or two image planes induced by a world plane) is a plane projective transformation. This can be computed from the correspondence of four (or more) points. The epipolar geometry between two views is represented by the fundamental matrix. This can be computed from the correspondence of seven (or more) points. Imaging Geometry

1,301 citations

Proceedings ArticleDOI
01 Aug 1996
TL;DR: This paper introduces a simple extension to image morphing that correctly handles 3D projective camera and scene transformations and works by prewarping two images prior to computing a morph and then postwarped the interpolated images.
Abstract: Image morphing techniques can generate compelling 2D transitions between images. However, differences in object pose or viewpoint often cause unnatural distortions in image morphs that are difficult to correct manually. Using basic principles of projective geometry, this paper introduces a simple extension to image morphing that correctly handles 3D projective camera and scene transformations. The technique, called view morphing, works by prewarping two images prior to computing a morph and then postwarping the interpolated images. Because no knowledge of 3D shape is required, the technique may be applied to photographs and drawings, as well as rendered scenes. The ability to synthesize changes both in viewpoint and image structure affords a wide variety of interesting 3D effects via simple image transformations. CR

872 citations


"View Synthesis of Scenes with Man-M..." refers background in this paper

  • ...View Morphing, [10], also works with uncalibrated cameras....

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Book Chapter
01 Jan 2005
TL;DR: This chapter introduces the concepts of projective geometry and tensor calculus and discusses how they can be applied to recover 3D models from images to yield models suited for automatic processing on real image data.
Abstract: There exist intricate geometric relations between multiple views of a 3D scene. These relations are related to the camera motion and calibration as well as to the scene structure. In this chapter w ...

415 citations


Additional excerpts

  • ...The projection equations for the two views and are given by ([5])...

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Proceedings ArticleDOI
23 Jun 1998
TL;DR: The novel contributions are that in a stratified context the various forms of providing metric information can be represented as circular constraints on the parameters of an affine transformation of the plane, providing a simple and uniform framework for integrating constraints.
Abstract: We describe the geometry constraints and algorithmic implementation for metric rectification of planes. The rectification allows metric properties, such as angles and length ratios, to be measured on the world plane from a perspective image. The novel contributions are: first, that in a stratified context the various forms of providing metric information, which include a known angle, two equal though unknown angles, and a known length ratio; can all be represented as circular constraints on the parameters of an affine transformation of the plane-this provides a simple and uniform framework for integrating constraints; second, direct rectification from right angles in the plane; third, it is shown that metric rectification enables calibration of the internal camera parameters; fourth, vanishing points are estimated using a Maximum Likelihood estimator; fifth, an algorithm for automatic rectification. Examples are given for a number of images, and applications demonstrated for texture map acquisition and metric measurements.

414 citations


"View Synthesis of Scenes with Man-M..." refers background in this paper

  • ...Thus, when compared with the given views, the synthesized views suffer from affine distortion which may be removed using metric rectification techniques [8]....

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Journal ArticleDOI
TL;DR: This work presents a new method for synthesizing novel views of a 3D scene from two or three reference images in full correspondence through the use and manipulation of an algebraic entity, termed the "trilinear tensor", that links point correspondences across three images.
Abstract: Presents a new method for synthesizing novel views of a 3D scene from two or three reference images in full correspondence. The core of this work is the use and manipulation of an algebraic entity, termed the "trilinear tensor", that links point correspondences across three images. For a given virtual camera position and orientation, a new trilinear tensor can be computed based on the original tensor of the reference images. The desired view can then be created using this new trilinear tensor and point correspondences across two of the reference images.

181 citations


"View Synthesis of Scenes with Man-M..." refers background in this paper

  • ...Other work in view synthesis includes [1] which uses the trifocal tensor between three views taken by uncalibrated cameras....

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