Results 1 - 10 of 12

Efficient Stereo and Optical Flow with Robust Similarity Measures

by Christian Unger, Eric Wahl, Slobodan Ilic
"... Abstract. In this paper we address the problem of dense stereo match-ing and computation of optical flow. We propose a generalized dense correspondence computation algorithm, so that stereo matching and op-tical flow can be performed robustly and efficiently at the same time. We particularly target ..."
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automotive applications and tested our method on real sequences from cameras mounted on vehicles. We performed an extensive evaluation of our method using different simi-larity measures and focused mainly on difficult real-world sequences with abrupt exposure changes. We did also evaluations on Middlebury

Machine Vision and Applications, Submitted to Omnidirectional Vision, Special Issue, October 2001. Video Arrays for Real-Time Tracking of Persons, Head and Face in an Intelligent Room

by Kohsia S. Huang, Mohan M. Trivedi
"... Real-time 3D person, head and face tracking are critically important for natural interactions among humans in an intelligent environment. Trackers based on multiple networked cameras estimate human positions and heights more accurately and robustly than single camera or binocular trackers. The goal ..."
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is estimated using camera optical and geometrical properties. The networked omnicamera system then uses the 3D person tracks to perform head and face tracking. The R-VAT uses a calibrated rectilinear camera network to estimate human location and height, and keeps track of human path by a Kalman filter

Stereo Depth Estimation: A Confidence Interval Approach

by R. Mandelbaum, G. Kamberova, M. Mintz - In Proc. of ICCV , 1998
"... We describe an estimation technique which, given a measurement of the depth of a target from a wide-fieldof -view (WFOV) stereo camera pair, produces a minimax risk fixed-size confidence interval estimate for the target depth. This work constitutes the first application to the computer vision domain ..."
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We describe an estimation technique which, given a measurement of the depth of a target from a wide-fieldof -view (WFOV) stereo camera pair, produces a minimax risk fixed-size confidence interval estimate for the target depth. This work constitutes the first application to the computer vision

CALIBRATION AND EPIPOLAR GEOMETRY OF GENERIC HETEROGENOUS CAMERA SYSTEMS

by Andreas Luber, Dominik Rueß, Kristian Manthey, Ralf Reulke
"... The application of perspective camera systems in photogrammetry and computer vision is state of the art. In recent years non-perspective and especially omnidirectional camera systems were increasingly used in close-range photogrammetry tasks. In general perspective camera model, i. e. pinhole model, ..."
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. In these cases a generic approach is helpful. Furthermore, a simple stereo reconstruction becomes possible using a fisheye and a perspective camera for example. In this paper camera models for perspective, wide-angle and omnidirectional camera systems are evaluated. The crucial initialization of the model’s

Mixing collaborative and hybrid vision devices for robotics applications. journal of Korea Robotics

by Jean-charles Bazin, Sung-heum Kim, Dong-geol Choi, Joon-young Lee, In-so Kweon , 2011
"... Abstract This paper studies how to combine devices such as monocular/stereo cameras, motors for panning/tilting, fisheye lens and convex mirrors, in order to solve vision-based robotic problems. To overcome the well-known trade-offs between optical properties, we present two mixed versions of the ne ..."
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Abstract This paper studies how to combine devices such as monocular/stereo cameras, motors for panning/tilting, fisheye lens and convex mirrors, in order to solve vision-based robotic problems. To overcome the well-known trade-offs between optical properties, we present two mixed versions

APPLICATION AND ACCURACY EVALUATION OF LEICA ADS40 FOR LARGE SCALE MAPPING

by Wenyuan Hu A, Gengyin Yang B, Hui Yuan C
"... Leica ADS40 photogrammetry system is one of the advanced aerial survey and mapping systems. Based on the three linear CCD arrays and pushbroom technology, ADS40 enables the quick acquisition of high spatial resolution, panchromatic, and multispectral images as well as stereo models with various view ..."
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Leica ADS40 photogrammetry system is one of the advanced aerial survey and mapping systems. Based on the three linear CCD arrays and pushbroom technology, ADS40 enables the quick acquisition of high spatial resolution, panchromatic, and multispectral images as well as stereo models with various

APPLICATION AND ACCURACY EVALUATION OF LEICA ADS40 FOR LARGE SCALE MAPPING

by Wenyuan Hua, Gengyin Yangb, Hui Yuanc
"... Leica ADS40 photogrammetry system is one of the advanced aerial survey and mapping systems. Based on the three linear CCD arrays and pushbroom technology, ADS40 enables the quick acquisition of high spatial resolution, panchromatic, and multispectral images as well as stereo models with various view ..."
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Leica ADS40 photogrammetry system is one of the advanced aerial survey and mapping systems. Based on the three linear CCD arrays and pushbroom technology, ADS40 enables the quick acquisition of high spatial resolution, panchromatic, and multispectral images as well as stereo models with various

A methodology for evaluating illumination artifact removal for corresponding images

by Tobi Vaudrey, Andreas Wedel, Reinhard Klette - in Proc. CAIP, LNCS 5702 , 2009
"... Abstract. Robust stereo and optical flow disparity matching is essential for computer vision applications with varying illumination conditions. Most robust disparity matching algorithms rely on computationally expensive normalized variants of the brightness constancy assumption to compute the matchi ..."
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Abstract. Robust stereo and optical flow disparity matching is essential for computer vision applications with varying illumination conditions. Most robust disparity matching algorithms rely on computationally expensive normalized variants of the brightness constancy assumption to compute

A clickable world: Behavior selection through pointing and context for mobile manipulation

by Hai Nguyen, Advait Jain, Cressel Anderson, Charles C. Kemp - In Intelligent Robots and Systems, 2008. IROS 2008. IEEE/RSJ International Conference on , 2008
"... Abstract — We present a new behavior selection system for human-robot interaction that maps virtual buttons overlaid on the physical environment to the robot’s behaviors, thereby creating a clickable world. The user clicks on a virtual button and activates the associated behavior by briefly illumina ..."
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illuminating a corresponding 3D location with an off-the-shelf green laser pointer. As we have described in previous work, the robot can detect this click and estimate its 3D location using an omnidirectional camera and a pan/tilt stereo camera. In this paper, we show that the robot can select the appropriate

The photometric Reconstruction of a Dynamic Textured Surface from just one Colour Image Acquisition 1

by Benjamin Bringier, David Helbert, Majdi Khoudeir , 2008
"... Textured surface analysis is essential for many applications. In this paper, we present a three-dimensional recovery approach for real textured surfaces based on photometric stereo. The aim is to be able to measure the textured surfaces with a high degree of accuracy. For this, we use a color digita ..."
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and camera. To evaluate the performances of our method, we compare it, on real textured surfaces to traditional photometric stereo using three images. We show thus that it is possible to have similar results with just one color image. c ○ 2008 Optical Society of America 1.
Results 1 - 10 of 12