[1992] Proceedings IEEE Workshop on Applications of Computer Vision

Nov. 30 1992-Dec. 2 1992

Filter Results

Displaying Results 1 - 25 of 37
  • Proceedings. IEEE Workshop on Applications of Computer Vision (Cat. No.92TH0446-5)

    Publication Year: 1992
    Request permission for commercial reuse | PDF file iconPDF (50 KB)
    Freely Available from IEEE
  • System-level design of specialized VLSI hardware for computing relative orientation

    Publication Year: 1992, Page(s):128 - 135
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    Determining the relative orientation between the coordinate systems of two cameras is central to binocular stereo, as well as to the long range motion vision. The author proposes a system-level design for specialized hardware to compute relative orientation in real-time. The problem is difficult for two reasons: one is the nonlinearity of the equations which must be solved, and which may possess m... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Shape recovery methods for visual inspection

    Publication Year: 1992, Page(s):136 - 145
    Cited by:  Papers (1)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (888 KB)

    The advancement of three-dimensional machine vision is closely related to the development of robust and efficient shape recovery methods. The author addresses the recovery problem associated with three different classes of surfaces: (a) specular surfaces; (b) surfaces with varying reflectance; and (c) rough and textured surfaces. Three realtime machine vision systems have been developed based on t... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A multiscale analysis model applied to natural surfaces

    Publication Year: 1992, Page(s):146 - 153
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (728 KB)

    Multiscale Analysis of surfaces allows a hierarchical representation of their composing features. To represent a surface at a given scale, structures that are insignificant at that scale have to be eliminated. A typical example for this approach is cartography. However, the aims of cartographers reach beyond simply gradually eliminating the structures; in the majority of cases, the nature of geomo... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Scale-space clustering and classification of SAR images with numerous attributes and classes

    Publication Year: 1992, Page(s):74 - 81
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1016 KB)

    Describes application of scale-space clustering to the classification of a multispectral and polarimetric SAR image of an agricultural site. After polarimetric and radiometric calibration and noise cancellation, the authors extracted a 12-dimensional feature vector for each pixel from the scattering matrix. The algorithm was able to partition without supervision a set of unlabeled vectors from 13 ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Algorithms for a fast confocal optical inspection system

    Publication Year: 1992, Page(s):298 - 305
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    Confocal imaging is an emerging technique for the measurement of surface topography in inspection. The authors present a system designed for fast acquisition and processing of confocal images, which consists of an optical front end using tilted confocal scanning, and an image processing module. The function of the image processing module is to improve signal resolution, perform smoothing and detec... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • CARTRACK: computer vision-based car following

    Publication Year: 1992, Page(s):156 - 163
    Cited by:  Papers (16)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    CARTRACK is a computer vision system that can reliably detect, track, and measure vehicle rears in images from a video camera in a following car. The system exploits the symmetry property typical for the rear of most vehicles on normal roads. The authors present two novel methods for detecting mirror symmetry in images, one based directly on the intensity values and another one based on a discrete... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A shadow handler in a video-based real-time traffic monitoring system

    Publication Year: 1992, Page(s):11 - 18
    Cited by:  Papers (91)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (876 KB)

    A video-based system for traffic monitoring is presented. The objective of the system is to set up a high-level description of the traffic scene comprising the position, speed and class of the vehicles. Algorithms for detecting moving objects, separating the vehicles from their shadows, tracking and classification are presented. The classification of vehicles under sunny conditions is very difficu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A shape analysis model with applications to a character recognition system

    Publication Year: 1992, Page(s):182 - 189
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (700 KB)

    A method for the recognition of multifont printed characters is proposed, giving emphasis to the identification of structural descriptions of character shapes using prototypes. Noise and shape variations are modeled as series of transformations from groups of features in the data to features in each prototype. Thus, the method manages systematically the relative distortion between a candidate shap... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Target tracking and range estimation using an image sequence

    Publication Year: 1992, Page(s):84 - 91
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (648 KB)

    Describes a new method of tracking targets across a sequence of images and estimating the range of these tracked objects from the camera. The motion of the camera between the successive frames is assumed to be known. The distance from the sensor to the objects is assumed to be much larger than the physical dimensions of the object. the approach presented makes use of the known sensor motion to gen... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A visually guided mobile robot acting in indoor environments

    Publication Year: 1992, Page(s):180, 308 - 316
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (16 KB)

    The paper describes the practical implementation of a vision-based navigation system for a mobile robot operating in indoor environments. The robot acquires visual information by means of three CCD cameras mounted on board. A stereo pair is used for ground plane obstacle detection and avoidance, while the third camera is used to locate landmarks and compute the robot's position. Odometric readings... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Visual processing for autonomous driving

    Publication Year: 1992, Page(s):164 - 171
    Cited by:  Papers (8)  |  Patents (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    Describes a visual processing algorithm that supports autonomous road following. The algorithm requires that lane markings be present and attempts to track the lane markings on both lane boundaries. There are three stages of computation: extracting edges; matching extracted edge points with a geometric model of the road, and updating the geometric road model. All processing is confined to the 2-D ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Multiple object tracking system with three level continuous processes

    Publication Year: 1992, Page(s):19 - 27
    Cited by:  Papers (4)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (812 KB)

    Reports a system for detecting human like moving objects in time-varying images. The authors show how it is possible to detect the image trajectories of people moving in ordinary indoor scenes. The system consists of three subprocesses: changing region detection, moving object tracking and movement interpretation. The processes are executed in parallel so hat each one can recover from the others' ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A segmentation-free approach to OCR

    Publication Year: 1992, Page(s):190 - 196
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB)

    When confronted with degraded images of text, however, the performance of many commercial OCR systems deteriorates severely. This occurs because all these systems rely on a segmentation step that is prone to error in the presence of image noise and printing artifacts. The authors present a novel OCR approach that overcomes this problem by eliminating the segmentation step altogether. This approach... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A system for obstacle detection during rotorcraft low-altitude flight

    Publication Year: 1992, Page(s):92 - 99
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (788 KB)

    Airborne vehicles such as rotorcraft must avoid obstacles such as antennas, towers, poles, fences, tree branches, and wires strung across the flight path. The paper analyzes the requirements of an obstacle detection system for rotorcrafts in low-altitude Nap-of-the-Earth flight based on various rotorcraft motion constraints. It argues that an automated obstacle detection system for the rotorcraft ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Interpolation of cinematic sequences

    Publication Year: 1992, Page(s):36 - 44
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (864 KB)

    Presents a new algorithm for interframe interpolation of cinematic sequences. The authors demonstrate its applicability to video data compression of pedestrian traffic and data compression for video conferencing. In both of these applications it is assumed that the background is nearly stationary and that there are no interobject occlusions. The interpolation algorithm makes use of estimates of op... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Fiber identification in microscopy by ridge detection and grouping

    Publication Year: 1992, Page(s):205 - 212
    Cited by:  Papers (2)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (968 KB)

    In microscopy, a common task is the identification of individual objects having some particular shape, after which various features can be measured and feature statistics taken over the set of objects. The identification process can be automated by applying appropriate computer vision techniques. The author addresses the specific problem of fiber identification. Fibers appear as thin lines or curv... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Liquid crystal polarization camera

    Publication Year: 1992, Page(s):120 - 127
    Cited by:  Papers (12)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (876 KB)

    Presents a fully automated system which unites CCD camera technology with liquid crystal technology to create a polarization camera capable of sensing the polarization of reflected light from objects at pixel resolution. As polarization affords a more general physical description of light than does intensity, it can therefore provide a richer set of descriptive physical constraints for the underst... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Recovering building structures from stereo

    Publication Year: 1992, Page(s):64 - 73
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (928 KB)

    Addresses the problem of extracting polyhedral building structures from a stereo pair of aerial intensity images. The authors describe a system that computes a hierarchy of descriptions such as segments, junctions, and links between junctions from each view, and matches these features at the different levels. Such high level features not only help reduce correspondence ambiguity during stereo matc... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A vision system for inspection of ball bonds in integrated circuits

    Publication Year: 1992, Page(s):290 - 297
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    The paper describes a vision system for automatic inspection of the connecting part of the wire bond of an IC where the wire connects to the bond pad on the chip. It considers a popular type of such bonds known as `ball bond'. Using two-dimensional images taken from the top of the IC wafer, the system determines several geometric measures which are important in determining the quality of the bond.... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Voice-bandwidth visual communication through logmaps: the Telecortex

    Publication Year: 1992, Page(s):4 - 10
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    Presents a robotic video telephone application of the Cortex-1 miniaturized space-variant active vision system. The embedded processor architecture of Cortex-1 enables it to implement a variety of functions not found in conventional video telephones, for example the camera tracks moving users with its pantilt mechanism. The authors also report an analog channel coding scheme to transmit logmap vid... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Autonomous landing of airplanes by dynamic machine vision

    Publication Year: 1992, Page(s):172 - 179
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB)

    The 4D approach to dynamic machine vision has been validated for the application area of on-board autonomous landing approaches in the visual flight regime with computing technology available today; sensors are a video-camera, inertial gyros and an air velocity meter. The key feature of the method is the reconstruction and servo-maintained adjustment by prediction error feedback of an internal spa... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Performance assessment of model-based tracking

    Publication Year: 1992, Page(s):28 - 35
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (740 KB)

    Model-based vision techniques, originally developed for the recognition and pose recovery of vehicles in a single image, are used here to track vehicles through a sequence of images. Knowledge of the position of the camera with respect to the ground plane is used to reduce the search space of possible vehicle positions from six dimensions to three. The expected dynamics of vehicles are expressed i... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A new methodology for isolating and diagnosing inconsistencies in image matching, as applied to the analysis of 2-D electrophoretic gels

    Publication Year: 1992, Page(s):197 - 204
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (620 KB)

    An image comparison algorithm employing a new notion of match consistency has been developed for the application of mutation detection on images of two-dimensional electrophoretic gels. The application requires a very high degree of accuracy in image comparison due to the rareness of mutation. The image comparison algorithm achieves high accuracy through monitoring, isolating and diagnosing incons... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Adaptive control techniques for dynamic visual repositioning of hand-eye robotic systems

    Publication Year: 1992, Page(s):110 - 117
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    Using active monocular vision for 3-D visual control tasks is difficult since the translational and the rotational degrees of freedom are strongly coupled. The paper addresses several issues in 3-D visual control and presents adaptive control schemes for the problem of robotic visual servoing (eye-in-hand configuration) around a static rigid target. The objective is to move the image projections o... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.