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IEEE Transactions on Circuits and Systems

Issue 11 • November 1987

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Displaying Results 1 - 14 of 14
  • Foreword to special issue on digital image processing and applications

    Publication Year: 1987, Page(s):1261 - 1263
    Request permission for commercial reuse | PDF file iconPDF (477 KB)
    Freely Available from IEEE
  • Linear-median hybrid edge detectors

    Publication Year: 1987, Page(s):1337 - 1343
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1211 KB)

    New types of edge detectors optimized for noisy conditions are introduced and analyzed. The detectors contain linear masks followed by the median operation. The linear masks are designed for detecting actual edges and not for detecting false edges. Extensive numerical simulations show that these edge detectors give better edge signals, attenuate noise better, and yet give as sharp edges as commonl... View full abstract»

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  • A pipelined architecture for parallel image relaxation operations

    Publication Year: 1987, Page(s):1375 - 1384
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1305 KB)

    Discrete relaxation techniques have proven useful in solving a wide range of problems in digital image processing, computer vision, and robot vision. A conventional hardware design for an 8-object, 8-label Discrete Relaxation Algorithm (DRA) requires three 4K memory blocks and maximum execution time of over an hour, which makes such a DRA hardware implementation infeasible. By reformulating the Di... View full abstract»

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  • Recent results in high-compression image coding (Invited Papaer)

    Publication Year: 1987, Page(s):1306 - 1336
    Cited by:  Papers (145)  |  Patents (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (8872 KB)

    The digital representation of an image requires a very large number of bits. The goal of image coding is to reduce this number as much as possible, and to reconstruct a faithful duplicate of the original picture. Early efforts in image coding, solely guided by information theory, led to a plethora of methods. The compression ratio reached a plateau of about 10:1 several years ago. Recent progress ... View full abstract»

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  • A fast algorithm for two dimensional median filtering

    Publication Year: 1987, Page(s):1364 - 1374
    Cited by:  Papers (30)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1032 KB)

    The median of a set of numbers is a number which partitions the given set, excluding that number, into two subsets with an equal number of elements such that the number is greater than or equal to the elements in one subset and less than or equal to in the other. In image processing, in order to compute the running median, the window is moved from one neighborhood to the next. In this paper, a fas... View full abstract»

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  • Representation and recognition of objects from dense range maps

    Publication Year: 1987, Page(s):1351 - 1363
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2248 KB)

    In this paper, we present a system for object representation and recognition from dense range maps. The system addresses three problems, namely (i) object representation from single view dense range map, (ii) integrating data or descriptions from multiple views for model construction, and (iii) matching descriptions from a single unknown view to models. Although the main goal of this paper is to d... View full abstract»

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  • A knowledge-based system for biomedical image processing and recognition

    Publication Year: 1987, Page(s):1399 - 1416
    Cited by:  Papers (38)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2616 KB)

    The purpose of this paper is to describe a rule-based system named IBIS (Interpretation of Biomedical Images of the Slice type), which, starting from conventional image processing, can recognize slices and locate automatically their principal anatomical organs in nuclear magnetic resonance (NMR) images of the head. The main aspects of the system are: knowledge representation, with 3-D and 2-D aspe... View full abstract»

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  • Image processing and analysis in multisensory systems

    Publication Year: 1987, Page(s):1417 - 1431
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2800 KB)

    An overview of trends on image processing and analysis in visual and nonvisual sensors introduces the presentation of two multisensory systems in industrial applications. The weakness of computer vision to solve object perception and localization issues in robotics singlehandedly led to the introduction of other nonvisual sensors. Principles, applications, and imaging techniques used by ultrasonic... View full abstract»

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  • Pre- and postfiltering of HDTV signals for sampling rate reduction and display up-conversion

    Publication Year: 1987, Page(s):1432 - 1439
    Cited by:  Papers (26)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (976 KB)

    Three-dimensional downsampling of a wide-band high-definition television signal provides an appropriate data rate for a digital transmission. Two well-known sampling patterns, fieldquincunx and linequincunx, have been proposed for downsampling of an interlaced signal. By reproducing progressive frames in the receiver, some of the disturbing effects of our present television system can be avoided. ... View full abstract»

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  • From multiple views to object recognition

    Publication Year: 1987, Page(s):1344 - 1350
    Cited by:  Papers (8)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1264 KB)

    A computational method is presented for recovering 3-D shapes by exploiting multiple views of an object. The method provides a volumetric representation of the object starting from the occluding contours, i.e., the contours which separate the object image from the background. A detailed description of the geometrical transformations applied to build the volumetric representation of objects from mu... View full abstract»

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  • Image processing for higher definition television (Invited Paper)

    Publication Year: 1987, Page(s):1385 - 1398
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2320 KB)

    The paper discusses the application of digital image-processing techniques to broadcast television with the goal of picture quality improvement. After defining picture quality targets and levels of system compatibility, a review of techniques is presented. These fall into the categories of achieving a wider picture format, improving vertical and horizontal resolution, and improving accurate color ... View full abstract»

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  • New results on stable multidimensional polynomials- Part II: Discrete case

    Publication Year: 1987, Page(s):1264 - 1274
    Cited by:  Papers (32)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1496 KB)

    Properties of various multidimensional polynomials arising in studies on discrete multidimensional systems are investigated. Reactance Schur polynomials and immittance Schur polynomials occurring, respectively, as the denominators (and numerators) of discrete reactance functions and discrete positive functions are introduced and their properties studied. The role of these polynomials in scattering... View full abstract»

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  • Adaptive nonlinear filters for simultaneous removal of different kinds of noise in images

    Publication Year: 1987, Page(s):1275 - 1291
    Cited by:  Papers (84)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2736 KB)

    A novel adaptive median filter is proposed. It allows the simultaneous removal of a combination of signal-dependent and additive random noise in addition to mixed impulse noise in images, processed in a single filtering pass. The adaptation algorithm is based on the local signal-to-noise ratio. An extension of the class of nonlinear mean filters to adaptive filters is considered. The performance o... View full abstract»

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  • Morphological filters: Statistics and further syntactic properties

    Publication Year: 1987, Page(s):1292 - 1305
    Cited by:  Papers (95)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2704 KB)

    Mathematical morphology has recently been introduced as a powerful tool for studying the geometrical properties of signals and systems. These techniques have been applied very successfully to the smoothing of noisy data. In this paper, we first derive some new mathematical morphology results for function and set processing (FSP) systems. Using these results we derive several statistical results fo... View full abstract»

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