Proceedings IEEE Conference on Computer Vision and Pattern Recognition. CVPR 2000 (Cat. No.PR00662)

15-15 June 2000

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  • Proceedings IEEE Conference on Computer Vision and Pattern Recognition. CVPR 2000 (Cat. No.PR00662)

    Publication Year: 2000
    Request permission for commercial reuse | PDF file iconPDF (660 KB)
    Freely Available from IEEE
  • Real-time 3D motion and structure of point features: a front-end system for vision-based control and interaction

    Publication Year: 2000, Page(s):778 - 779 vol.2
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (230 KB)

    We present a system that consists of one camera connected to a personal computer that can (a) select and track a number of high-contrast point features on a sequence of images, (b) estimate their three-dimensional motion and position relative to an inertial reference frame, assuming rigidity, (c) handle occlusions that cause point-features to disappear as well as new features to appear. The system... View full abstract»

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  • Index of authors

    Publication Year: 2000, Page(s):799 - 804
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    Freely Available from IEEE
  • Shape and motion carving in 6D

    Publication Year: 2000, Page(s):592 - 598 vol.2
    Cited by:  Papers (42)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    The motion of a non-rigid scene over time imposes more constraints on its structure than those derived from images at a single time instant alone. An algorithm is presented for simultaneously recovering dense scene shape and scene flow (i.e. the instantaneous 3D motion at every point in the scene). The algorithm operates by carving away hexels, or points in the 6D space of all possible shapes and ... View full abstract»

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  • Integrated 3D scene flow and structure recovery from multiview image sequences

    Publication Year: 2000, Page(s):674 - 681 vol.2
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (848 KB)

    Scene flow is the 3D motion field of points in the world. Given N (N>1) image sequences gathered with a N-eye stereo camera or N calibrated cameras, we present a novel system which integrates 3D scene flow and structure recovery in order to complement each other's performance. We do not assume rigidity of the scene motion, thus allowing for non-rigid motion in the scene. In our work, images are... View full abstract»

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  • A general method for Errors-in-Variables problems in computer vision

    Publication Year: 2000, Page(s):18 - 25 vol.2
    Cited by:  Papers (37)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    The Errors-in-Variables (EIV) model from statistics is often employed in computer vision though only rarely under this name. In an EIV model all the measurements are corrupted by noise while the a priori information is captured with a nonlinear constraint among the true (unknown) values of these measurements. To estimate the model parameters and the uncorrupted data, the constraint can be lineariz... View full abstract»

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  • Intelligent selection tools

    Publication Year: 2000, Page(s):776 - 777 vol.2
    Cited by:  Papers (1)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2024 KB)

    Intelligent Scissors and Intelligent Paint are complementary interactive image segmentation tools that allow a user to quickly and accurately select objects of interest. This demonstration provides a means for participants to experience the dynamic nature of these tools View full abstract»

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  • A feature-based technique for joint, linear estimation of high-order image-to-mosaic transformations: application to mosaicing the curved human retina

    Publication Year: 2000, Page(s):585 - 591 vol.2
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    Methods are presented for increasing the coverage and accuracy of image mosaics constructed from multiple, uncalibrated, weak-perspective views of the human retina. Extending our previous algorithm for registering pairs of images using a non-invertible, 12-parameter, quadratic image transformation model and a hierarchical, robust estimation technique, two important innovations are presented. The f... View full abstract»

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  • Reconstruction of scene models from sparse 3D structure

    Publication Year: 2000, Page(s):666 - 671 vol.2
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB)

    In this paper we present a geometric theory for reconstruction of surface models from sparse 3D data captured from N camera views which are consistent with the data visibility. Sparse 3D measurements of real scenes are readily estimated from image sequences using structure-from-motion techniques. Currently there is no general method for reconstruction of 3D models of arbitrary scenes from sparse d... View full abstract»

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  • Inconsistencies in edge detector evaluation

    Publication Year: 2000, Page(s):398 - 404 vol.2
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (192 KB)

    In recent years, increasing effort has gone into evaluating computer vision algorithms in general, and edge detection algorithms in particular. Most of the evaluation techniques use only a few test images, leaving open the question of how broadly their results can be interpreted. Our research tests the consistency of the receiver operating characteristic (ROC) curve, and demonstrates why consisten... View full abstract»

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  • Detecting dynamic behavior in compressed fingerprint videos: distortion

    Publication Year: 2000, Page(s):320 - 326 vol.2
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (852 KB)

    Distortions in fingerprint images arising from the elasticity of finger skin and the pressure and movement of fingers during image capture lead to great difficulties in establishing a match between multiple images acquired from a single finger. In a single fingerprint image depicting a finger at some given instant of time, it is difficult to get any distortion information. Further, static two-dime... View full abstract»

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  • Video summarization using singular value decomposition

    Publication Year: 2000, Page(s):174 - 180 vol.2
    Cited by:  Papers (24)  |  Patents (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    The authors propose a novel technique for video summarization based on singular value decomposition (SVD). For the input video sequence, we create a feature-frame matrix A, and perform the SVD on it. From this SVD, we are able, to not only derive the refined feature space to better cluster visually similar frames, but also define a metric to measure the amount of visual content contained in each f... View full abstract»

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  • Surface landmark selection and matching in natural terrain

    Publication Year: 2000, Page(s):413 - 420 vol.2
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1324 KB)

    In this paper we present an algorithm for robust absolute position estimation in natural terrain based on landmarks extracted from dense 3-D surfaces. Our landmarks are constructed by concatenating pose dependent oriented surface points with pose invariant surface signatures into a single feature vector; this definition of landmarks allows a priori pose information to be used to constrain the sear... View full abstract»

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  • Motion characterization by temporal slices analysis

    Publication Year: 2000, Page(s):768 - 773 vol.2
    Cited by:  Papers (7)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    This paper describes an approach to characterize camera and object motions based on the analysis of spatio-temporal image volumes. In the spatio-temporal slices of image volumes, motion is depicted as oriented patterns. We propose a tensor histogram computation algorithm to represent these patterns. The motion trajectories in a histogram are tracked to describe both the camera and object motions. ... View full abstract»

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  • Rectified catadioptric stereo sensors

    Publication Year: 2000, Page(s):380 - 387 vol.2
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    It has been previously shown how mirrors can be used to capture stereo images with a single camera, an approach termed catadioptric stereo. In this paper we present novel catadioptric sensors which use mirrors to produce rectified stereo images. The scan-line correspondence of these images benefits real-time stereo by avoiding the computational cost and image degradation due to resampling when rec... View full abstract»

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  • Probabilistic vs. geometric similarity measures for image retrieval

    Publication Year: 2000, Page(s):357 - 362 vol.2
    Cited by:  Papers (15)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    Similarity between images in image retrieval is measured by computing distances between feature vectors. This paper presents a probabilistic approach and describes two likelihood-based similarity measures for image retrieval. Popular distance measures like the Euclidean distance implicitly assign more more weighting to features with large ranges than those with small ranges. First, we discuss the ... View full abstract»

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  • Augmented reality system for surgical navigation using robust target vision

    Publication Year: 2000, Page(s):187 - 194 vol.2
    Cited by:  Papers (1)  |  Patents (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (676 KB)

    This paper presents a robust and accurate vision-based augmented reality system for surgical navigation. The key point of our system is a robust and real-time monocular vision algorithm to estimate the 3D pose of surgical tools, utilizing specially designed code markers and Kalman filter-based position updating. The vision system is not impaired by occlusion and rapid change of illumination. The a... View full abstract»

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  • Spatio-temporal analysis of omni image

    Publication Year: 2000, Page(s):577 - 584 vol.2
    Cited by:  Papers (5)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4700 KB)

    This paper describes an efficient method to obtain 3D information by using spatio-temporal analysis of omni images for outdoor navigation and map-making in the intelligent transportation system (ITS) application. Two types of omni-directional cameras are employed to make a spatio-temporal volume, which is a sequence of omni images stacked in the spatio-temporal space. For the spatio-temporal analy... View full abstract»

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  • Curve and surface reconstruction from regular and non-regular point sets

    Publication Year: 2000, Page(s):659 - 665 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    In this paper, we address the problem of curve and surface reconstruction from sets of points. We introduce regular interpolants which are polygonal approximations of planar curves and surfaces verifying a local sampling criterion. Properties of regular interpolants lead to new polygonal reconstruction methods from sets of organized and unorganized points. These methods do not need any parameter o... View full abstract»

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  • View-independent recognition of hand postures

    Publication Year: 2000, Page(s):88 - 94 vol.2
    Cited by:  Papers (36)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    Since the human hand is highly articulated and deformable, hand posture recognition is a challenging example in the research on view-independent object recognition. Due to the difficulties of the model-based approach, the appearance-based learning approach is promising to handle large variation in visual inputs. However, the generalization of many proposed supervised learning methods to this probl... View full abstract»

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  • A geometric approach to blind deconvolution with application to shape from defocus

    Publication Year: 2000, Page(s):10 - 17 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1032 KB)

    We propose a solution to the generic “bilinear calibration-estimation problem” when using a quadratic cost function and restricting to (locally) translation-invariant imaging models. We apply the solution to the problem of reconstructing the three-dimensional shape and radiance of a scene from a number of defocused images. Since the imaging process maps the continuum of three-dimension... View full abstract»

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  • Estimation and prediction of evolving color distributions for skin segmentation under varying illumination

    Publication Year: 2000, Page(s):152 - 159 vol.2
    Cited by:  Papers (33)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2012 KB)

    A model approach for real time skin segmentation in video sequences is described. The approach enables reliable skin segmentation despite wide variation in illumination during tracking. An explicit second order Markov model is used to predict evolution of the skin color (HSV) histogram over time. Histograms are dynamically updated based on feedback from the current segmentation and based on predic... View full abstract»

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  • Visual servoing for automatic and uncalibrated needle placement for percutaneous procedures

    Publication Year: 2000, Page(s):327 - 334 vol.2
    Cited by:  Papers (6)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1512 KB)

    This paper presents a new approach to image-based guidance of a needle or surgical tool during percutaneous procedures. The method is based on visual servoing. It requires no prior calibration or registration. The technique provides highly precise 3D-alignment of the tool with respect to an anatomic target. By taking advantage of projective geometry and projective invariants, this can be achieved ... View full abstract»

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  • Computing optical flow with physical models of brightness variation

    Publication Year: 2000, Page(s):760 - 767 vol.2
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    This paper exploits physical models of time-varying brightness in image sequences to estimate optical flow and physical parameters of the scene. Previous approaches handled violations of brightness constancy with the use of robust statistics or with generalized brightness constancy constraints that allow generic types of contrast and illumination changes. We consider models of brightness variation... View full abstract»

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  • Zebra-crossing detection for the partially sighted

    Publication Year: 2000, Page(s):211 - 217 vol.2
    Cited by:  Papers (38)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (500 KB)

    Zebra-crossings are useful road features for outdoor navigation in mobility aids for the partially sighted. In this paper, zebra-crossings are detected by looking for groups of concurrent lines, edges are then partitioned using intensity variation information. In order to tackle the ambiguity of the detection algorithm in distinguishing zebra-crossings and stair-cases, pose information is sought. ... View full abstract»

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