Computer Vision and Pattern Recognition, 1988. Proceedings CVPR '88., Computer Society Conference on

5-9 June 1988

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  • Proceedings CVPR '88: The Computer Society Conference on Computer Vision and Pattern Recognition (Cat. No.88CH2605-4)

    Publication Year: 1988
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    Freely Available from IEEE
  • Generalizing epipolar-plane image analysis on the spatiotemporal surface

    Publication Year: 1988, Page(s):2 - 9
    Cited by:  Papers (29)  |  Patents (4)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (672 KB)

    The previous implementations of the authors' epipolar-plane image-analysis mapping technique demonstrated the feasibility and benefits of the approach, but were carried out for restricted camera geometries. The question of more general geometries made the technique's utility for autonomous navigation uncertain. The authors have developed a generalization of the analysis that: (1) enables varying v... View full abstract»

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  • A color metric for computer vision

    Publication Year: 1988, Page(s):10 - 17
    Cited by:  Papers (13)  |  Patents (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (513 KB)

    The authors develop a color space metric which is useful for computer vision. While there is no shortage of proposed methods for quantifying how the human eye perceives color differences, it is difficult to apply these perceptual metrics directly to the color images sensed by a computer vision system. The metric developed can be applied to images sensed using color filters (e.g. red, green, or blu... View full abstract»

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  • Line-drawing interpretation: a mathematical framework

    Publication Year: 1988, Page(s):18 - 31
    Cited by:  Papers (3)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (1258 KB)

    The author reports on the progress toward a mathematical theory of line-drawing interpretation. A working framework is developed, and a variety of tools and techniques are demonstrated within it. He reviews related work and discusses his assumptions. He presents a projective mapping which he expects will find use in the extension of results derived for orthographic projection to perspective projec... View full abstract»

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  • Large hierarchical object recognition using libraries of parameterized model sub-parts

    Publication Year: 1988, Page(s):32 - 41
    Cited by:  Papers (36)  |  Patents (5)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (841 KB)

    A description is given of the development of a model-based vision system that utilizes hierarchies of both object structure and object scale. The focus of the research is to use these hierarchies to achieve robust recognition based on effective organization and indexing schemes for model libraries. The goal of the system is to recognize parameterized instances of nonrigid model objects contained i... View full abstract»

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  • Calibration of a stereo system with small relative angles

    Publication Year: 1988, Page(s):44 - 51
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (599 KB)

    The authors present an algorithm for the calibration of a stereo system with small relative angles in an uncontrolled environment. This algorithm has two advantages: (1) it is more accurate than the existing algorithms in the computer vision and photogrammetry literatures; and (2) it provides useful insight into the problem of camera calibration and relative orientation. This is done by deriving e... View full abstract»

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  • Evaluation of quantization error in computer vision

    Publication Year: 1988, Page(s):52 - 60
    Cited by:  Papers (4)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (610 KB)

    The authors develop the mathematical tools for the computation of the average error due to quantization. They can be used in estimating the actual error occurring in the implementation of a method. Also derived is the analytic expression for the probability density of error distribution of a function of an arbitrarily large number of independently quantized variables. The probability of the error ... View full abstract»

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  • The inverse perspective problem from a single view for polyhedra location

    Publication Year: 1988, Page(s):61 - 66
    Cited by:  Papers (8)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (463 KB)

    A method to find the analytical solutions of the inverse perspective problem for the determination of the 3-D object attitude in space from a single perspective image is presented. Its principle is based on the interpretation of a triplet of any image lines as the perspective projection of triplet of linear ridges of the object model. The geometrical transformations to apply to the model to bring ... View full abstract»

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  • Calibrating a Cartesian robot with eye-on-hand configuration independent of eye-to-hand relationship

    Publication Year: 1988, Page(s):67 - 75
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (648 KB)

    A novel approach is described to geometric calibration of Cartesian robots. This is one-third of an overall approach to real-time 3-D robotics eye, eye-to-hand, and hand calibration, which uses a common setup and calibration object, and is especially suited to machine vision community. The robot makes a series of automatically planned movements with a camera rigidly mounted at the gripper. At the ... View full abstract»

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  • An effective method for determining the robot position

    Publication Year: 1988, Page(s):76 - 81
    Cited by:  Papers (1)  |  Patents (3)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (361 KB)

    A procedure for determining the position of a mobile robot in a 3-D space is presented. A single 2-D image of a cubic object is used to derive the position of the robot relative to this cube. The derivation is based on the information of vanishing points of the 2-D perspective projection of the cube. The coordinates of vanishing points are iteratively modified to satisfy the imposed constraints: (... View full abstract»

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  • Determination of camera location from 2D to 3D line and point correspondences

    Publication Year: 1988, Page(s):82 - 88
    Cited by:  Papers (13)  |  Patents (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (349 KB)

    A novel method for the determination of camera location from 2-D to 3-D line or point correspondences is presented. Using this method, the computation of the rotation matrix and the translation vector of the camera are separable. First, the rotation matrix is found by a linear algorithm using eight or more line correspondences, or by a nonlinear algorithm using three of more line correspondences, ... View full abstract»

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  • A new approach to robot orientation by orthogonal lines

    Publication Year: 1988, Page(s):89 - 92
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (229 KB)

    A novel method is proposed in which the image of three arbitrary orthogonal lines is used to determine the orientation of the robot. Such an image occurs frequently in natural in-house environments such as warehouses, factories, and offices. This method generalizes a previous method where a house-corner was used in the sense that, with the new method, the lines need not intersect at a single point... View full abstract»

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  • Texture segmentation using Voronoi polygons

    Publication Year: 1988, Page(s):94 - 99
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (570 KB)

    The authors have developed a texture-segmentation algorithm based on the Voronoi tessellation. The algorithm first builds the Voronoi tessellation of the tokens that make up the image. It then computes a set of features from the Voronoi polygons. Finally, it performs a probabilistic relaxation labeling on the tokens, to identify the interior and the border regions of the textures. The algorithm ha... View full abstract»

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  • Polynomial shift-invariant operators for texture segmentation

    Publication Year: 1988, Page(s):100 - 104
    Cited by:  Papers (3)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (349 KB)

    Marking boundaries in an image between regions that are differently textured depends on computing descriptions of the regions that show them to be differently textured. Many texture description functions have been introduced in the literature; however, the texture description problem has never been treated in full generality. The author proposed shift-invariant vector-valued piecewise continuous f... View full abstract»

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  • A weak structural texture analysis technique for obtaining wave heights from ocean wave images

    Publication Year: 1988, Page(s):105 - 110
    Cited by:  Patents (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (229 KB)

    A weak structural texture analysis technique for determining wave heights from images is presented. Based on the representation of ocean waveforms by relational trees, the absolute peak heights, the relative peak heights, and the peak width are extracted. The histogram of peak heights for a given width is obtained, and a weak structural texture measure is constructed to discriminate the different ... View full abstract»

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  • A knowledge-based system for recognizing man-made objects in aerial images

    Publication Year: 1988, Page(s):111 - 117
    Cited by:  Papers (4)  |  Patents (3)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (567 KB)

    A description is given of a knowledge-based vision system for recognizing and classifying man-made objects in aerial images. Images are interpreted and image object descriptors are created, based on model-driven high-level vision processing. Knowledge of various low-level vision techniques, and their applicability to generic applications are used to dynamically select specific low-level vision tec... View full abstract»

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  • Finding objects on aerial photographs: a rule-based low level system

    Publication Year: 1988, Page(s):118 - 122
    Cited by:  Papers (5)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (390 KB)

    A rule-based system for image segmentation and understanding is proposed. Called ROF (rule-based object finder), it is the low-level state of an image understanding system for aerial photographs. The general design of ROF uses a novel paradigm for segmentation. Candidate pixels for regions (or borders of regions) are chosen by the raw data module (RDM) on the basis of the geometric shape of their ... View full abstract»

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  • Experiments and evaluations of rule based methods in image analysis

    Publication Year: 1988, Page(s):123 - 128
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (572 KB)

    The authors describe applications and give evaluations of rule-based methods for image analysis. They used rule-based programming methods for two image-analysis applications: segmenting and interpreting images of printed circuit boards, and segmenting satellite images of ice floes. Such problems are often divided into low-, mid-, and high-level processing, and they consider rule-based, or declarat... View full abstract»

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  • Image interpretation by distributed cooperative processes

    Publication Year: 1988, Page(s):129 - 135
    Cited by:  Papers (3)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (798 KB)

    The VISIONS schema system provides a framework for building a general interpretation system as a distributed network of many small special-purpose interpretation systems. Each scheme is an 'expert' at recognizing one type of object. A discussion is presented of the problems of knowledge representation in a distributed A1 environments and the scheme system approach to those problems. A series of in... View full abstract»

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  • Improving visible-surface reconstruction

    Publication Year: 1988, Page(s):138 - 143
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (662 KB)

    Techniques are described for improving the speed and accuracy of iterative visible-surface reconstruction algorithms. In particular, the importance of obtaining accurate early information is emphasized, both in the initial surface approximation and in the early localization of surface discontinuities. The first of these goals is attained using a simple technique known as constraint expansion, whic... View full abstract»

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  • Moment images, polynomial fit filters. and the problem of surface interpolation

    Publication Year: 1988, Page(s):144 - 152
    Cited by:  Papers (12)  |  Patents (4)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (680 KB)

    A uniform hierarchical procedure for processing incomplete image data is describes. It begins with the computation of local moments within windows centered on each output sample point. Arrays of such measures, called moment images, are computed efficiently through the application of a series of small kernel filters. A polynomial surface is then fit to the available image data within a local neighb... View full abstract»

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  • Quantization error in stereo imaging

    Publication Year: 1988, Page(s):153 - 158
    Cited by:  Papers (9)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (259 KB)

    In the design of a stereo imaging system, one often chooses the parameters to meet a desired error level. The probability density function of the range estimation error and the expected value of the range error magnitude are derived in terms of the various design parameters. The relative range error is proposed as a better way of quantifying the range resolution of a stereo imaging system.<<... View full abstract»

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  • Qualitative depth from vertical and horizontal binocular disparities, in agreement with psychophysical evidence

    Publication Year: 1988, Page(s):159 - 164
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (449 KB)

    The author concentrates on the problem of obtaining depth information from binocular disparities. It is motivated by the fact that implementing registration algorithms and using the results for depth computations is hard in practice with real images due to noise and quantization errors. It is shown that qualitative depth information can be obtained from stereo disparities with almost no computatio... View full abstract»

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  • Local constraint integration in a connectionist model of stereo vision

    Publication Year: 1988, Page(s):165 - 170
    Cited by:  Papers (6)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (695 KB)

    The authors' approach to stereo vision involves: (1) designing a general-purpose low-level matching algorithm: (2) testing it on a wide range of stereo pairs; and (3) adding mechanisms to the low-level algorithm that solve any remaining problems without interfering with its successful behavior. They begin by building the general support algorithm (GSA), a low-level matching algorithm that integrat... View full abstract»

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  • Interactive complexity control and high-speed stereo matching

    Publication Year: 1988, Page(s):171 - 176
    Cited by:  Papers (2)  |  Patents (3)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (517 KB)

    The authors are concerned with the development of a novel approach to edge-based stereo matching. In the context of an incremental matching strategy the authors have replaced the traditional hierarchical (coarse-fine) matching by an approach called complexity control based matching. The implementation of this method allows the user to select interactively features which (given the context provided... View full abstract»

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