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Etude Du Cycle De Respiration A Partir De Donnees 4d Generees Par Un Scanner Dynamique 3d Study Of The Breathing Pattern Based On 4d Data Collected By A Dynamic 3d Body Scanner

by Jean-christophe Nebel
"... developing a dynamic 3D whole body scanner. The basic concept is to equip a studio space such that the "working volume" of the space is imaged from all directions using fixed stereo-pairs of TV cameras. The stereo-pair images, collected by the camera pairs at a frame rate of 25 Hz, are the ..."
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developing a dynamic 3D whole body scanner. The basic concept is to equip a studio space such that the "working volume" of the space is imaged from all directions using fixed stereo-pairs of TV cameras. The stereo-pair images, collected by the camera pairs at a frame rate of 25 Hz

Etude Du Cycle De Respiration A Partir De Donnees 4d Generees Par Un Scanner Dynamique 3d Study Of The Breathing Pattern Based On 4d Data Collected By A Dynamic 3d Body Scanner

by Jean-Christophe Nebel Tel, Jean-christophe Nebel
"... developing a dynamic 3D whole body scanner. The basic concept is to equip a studio space such that the "working volume" of the space is imaged from all directions using fixed stereo-pairs of TV cameras. The stereo-pair images, collected by the camera pairs at a frame rate of 25 Hz, are the ..."
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developing a dynamic 3D whole body scanner. The basic concept is to equip a studio space such that the "working volume" of the space is imaged from all directions using fixed stereo-pairs of TV cameras. The stereo-pair images, collected by the camera pairs at a frame rate of 25 Hz

Estimating optimal parameters for mrf stereo from a single image pair

by Li Zhang, Steven M. Seitz - IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE (PAMI , 2007
"... This paper presents a novel approach for estimating the parameters for MRF-based stereo algorithms. This approach is based on a new formulation of stereo as a maximum a posterior (MAP) problem in which both a disparity map and MRF parameters are estimated from the stereo pair itself. We present an ..."
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This paper presents a novel approach for estimating the parameters for MRF-based stereo algorithms. This approach is based on a new formulation of stereo as a maximum a posterior (MAP) problem in which both a disparity map and MRF parameters are estimated from the stereo pair itself. We present

IS IT REALISTIC TO GENERATE CONTROL POINTS FROM A STEREO PAIR?

by George E. Karras
"... As a rule, photogrammetric applications in cultural heritage conservation rely on geodetically measured control points for establishing image and model registration into some object coordinate system. But for relatively modest tasks, such as digital rectification of building façades, geodetic work i ..."
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vertical or horizontal lines allow fully fixing the rotational part of absolute orientation. Transformed model points may now serve as control in an object-referenced system. Stereo pairs, taken with three digital cameras (2, 5, 8 MPixel) in various configurations were used in order to evaluate

Eye gaze tracking using an active stereo head

by David Beymer, Myron Flickner - In Proceedings of Computer Vision and Pattern Recognition , 2003
"... In the eye gaze tracking problem, the goal is to determine where on a monitor screen a computer user is looking – the gaze point. Existing systems generally have one of two limitations: either the head must remain fixed in front of a stationary camera, or, to allow for head motion, the user must wea ..."
Abstract - Cited by 53 (0 self) - Add to MetaCart
wear an obtrusive device. We introduce a 3D eye tracking system where head motion is allowed without the need for markers or worn devices. We use a pair of stereo systems: a wide angle stereo system detects the face and steers an active narrow FOV stereo system to track the eye at high resolution

Beyond Lambert: Reconstructing surfaces with arbitrary BRDFs

by Sebastian Magda, David J. Kriegman - In Proceedings of IEEE international conference on computer vision , 2001
"... We address an open and hitherto neglected problem in computer vision, how to reconstruct the geometry of objects with arbitrary and possibly anisotropic bidirectional reflectance distribution functions (BRDFs). Present reconstruction techniques, whether stereo vision, structure from motion, laser ra ..."
Abstract - Cited by 53 (5 self) - Add to MetaCart
which may vary over the surface. The first method takes advantage of Helmholtz reciprocity, while the second method exploits the fact that the, radiance along a ray of light is constant. In particular, the first method uses stereo pairs of images in which point light sources are co

Iso-disparity surfaces for general stereo configurations

by Marc Pollefeys, Sudipta Sinha
"... Abstract. This paper discusses the iso-disparity surfaces for general stereo configurations. These are the surfaces that are observed at the same resolution along the epipolar lines in both images of a stereo pair. For stereo algorithms that include smoothness terms either implicitly through area-ba ..."
Abstract - Cited by 8 (0 self) - Add to MetaCart
that the intersections of these surfaces with an epipolar plane consists of a family of conics with three fixed points. There is an interesting relation to the human horopter and we show that for stereo the retinas act as if they were flat. Further we discuss the relevance of iso-disparity surfaces to image-pair

Stereo coupled active contours

by Tat-jen Cham, Roberto Cipolla - In Proc. IEEE Conf. Comp. Vis. Patt. Rec , 1997
"... We consider how tracking in stereo may be enhanced by coupling pairs of active contours in different views via affine epipolar geometry and various subsets of planar affine transformations, as well as by implementing temporal constraints imposed by curve rigidity. 3D curve tracking is achieved using ..."
Abstract - Cited by 19 (0 self) - Add to MetaCart
We consider how tracking in stereo may be enhanced by coupling pairs of active contours in different views via affine epipolar geometry and various subsets of planar affine transformations, as well as by implementing temporal constraints imposed by curve rigidity. 3D curve tracking is achieved

Automated segmentation of the optic disc from stereo color photographs using physiologically plausible features. Investigative ophthalmology & visual science

by Michael D Abràmoff , Wallace L M Alward , Emily C Greenlee , Lesya Shuba , Chan Y Kim , John H Fingert , Young H Kwon
"... PURPOSE. To evaluate a novel automated segmentation algorithm for cup-to-disc segmentation from stereo color photographs of patients with glaucoma for the measurement of glaucoma progression. METHODS. Stereo color photographs of the optic disc were obtained by using a fixed stereo-base fundus camer ..."
Abstract - Cited by 17 (0 self) - Add to MetaCart
PURPOSE. To evaluate a novel automated segmentation algorithm for cup-to-disc segmentation from stereo color photographs of patients with glaucoma for the measurement of glaucoma progression. METHODS. Stereo color photographs of the optic disc were obtained by using a fixed stereo-base fundus

unknown title

by unknown authors
"... This paper presents a novel approach for estimating parameters for MRF-based stereo algorithms. This approach is based on a new formulation of stereo as a maximum a posterior (MAP) problem, in which both a disparity map and MRF parameters are estimated from the stereo pair itself. We present an iter ..."
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This paper presents a novel approach for estimating parameters for MRF-based stereo algorithms. This approach is based on a new formulation of stereo as a maximum a posterior (MAP) problem, in which both a disparity map and MRF parameters are estimated from the stereo pair itself. We present
Results 1 - 10 of 60