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Third International Conference on Image Processing and its Applications, 1989.

18-20 July 1989

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Displaying Results 1 - 25 of 143
  • An intelligent system for automatic fire detection in forests

    Publication Year: 1989, Page(s):563 - 570
    Cited by:  Papers (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (310 KB)

    The use of smoke-analysis is described for fire detection by means of suitably placed standard TV cameras. The paper first gives the smoke detection technique and discusses a method to obtain a suitable description of the scene. Then the intelligent part of the system is described and the methods and heuristics to speed-up the decision process discussed. The sub-system devoted to the translation o... View full abstract»

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  • Current trends in image processing for broadcast television

    Publication Year: 1989, Page(s):257 - 263
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (352 KB)

    Image processing is becoming increasingly prominent in broadcast television. Perhaps the greatest trigger to the exploration of new image processing techniques for TV is the need to develop a high definition television (HDTV) transmission system which is bandwidth-efficient. HDTV is defined to have at least double the resolution of existing TV systems, both horizontally and vertically, and a wider... View full abstract»

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  • Cloud cover estimation by analysing SPOT monochromatic images

    Publication Year: 1989, Page(s):252 - 256
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (412 KB)

    Cloud detection is a very important part of Earth-atmosphere system study. The results of these studies lead to a lot of implications for climatology knowledge. There are also satellite image users who want to work with cloudless images. An automatic sorting technique is needed to separate a cloudless image from cloudy one by affecting it with a certain cloudiness index. The authors describe a tec... View full abstract»

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  • Automatic analysis of weather satellite images

    Publication Year: 1989, Page(s):247 - 251
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (208 KB)

    Deals with the automatic analysis of weather satellite images. This application poses particular problems for image processing and pattern recognition, as the cloud structures present in the satellite images can be expressed as a form of non-rigid objects within diffuse, time varying, images View full abstract»

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  • A display system for objects with three dimensional tomographic data

    Publication Year: 1989, Page(s):373 - 377
    Cited by:  Papers (1)  |  Patents (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (260 KB)

    One can get many cross sectional CT data and can obtain three dimensional (3-D) information about the organs from these CT images. The 3-D data obtained by piling up many cross sectional images have been used for making new cross sectional images by accessing appropriate parts of the 3-D data. But it is not so easy to generate a cross sectional image in a short time, especially in the usual case w... View full abstract»

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  • Image processing for automatic surface defect detection

    Publication Year: 1989, Page(s):192 - 196
    Cited by:  Papers (3)  |  Patents (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (276 KB)

    This paper defines a surface defect and reviews image processing algorithms for defect detection, severity measurement and classification. A number of new techniques which have been developed for use on a dedicated machine vision defect detection system are presented and their applications discussed View full abstract»

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  • Image bandwidth reduction using adaptive ternary delta modulation with frame difference prediction

    Publication Year: 1989, Page(s):581 - 584
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (216 KB)

    Predictive CAQ (constant area quantization) has been applied to interframe image bandwidth compression using computer simulation. For the type of images studied it has been demonstrated that a simple prediction algorithm based on frame differences can be used to produce significant improvement in picture quality as well as bit rate reduction as compared to 2-dimensional ATDM. Alternate line ATDM p... View full abstract»

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  • A PC-based colour image processing system for wheat grain grading

    Publication Year: 1989, Page(s):242 - 246
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (280 KB)

    A colour image processing workstation has been developed to assist cereal grain inspection for grading purposes. It has been initially applied to wheat grain colour analysis. Application of colour and texture analysis has not previously been reported. Colour is particularly important for the quality assessment of cereals. Equipment and methodology for kernel colour analysis are described in this a... View full abstract»

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  • A study of image recognition system

    Publication Year: 1989, Page(s):112 - 116
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (324 KB)

    This paper describes an image recognition system in which top-down and bottom-up approaches are integrated. The proposed system consists of a feature extractor and an interpreter. The feature extractor performs low level image processing in the first stage to obtain feature primitives. In the second stage, these primitives are grouped into feature candidates for a recognition, using the perception... View full abstract»

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  • A pipeline processor employing hexagonal sampling for surface inspection

    Publication Year: 1989, Page(s):156 - 160
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (372 KB)

    The simulation of a pipeline image processor is presented. The pipeline is comprised of a series of common hardware processor elements, each individually programmable to provide a separate function. This architecture results in real-time system implementation at low cost, making it suitable for industrial vision applications. A comparison is made between processes operating on square and hexagonal... View full abstract»

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  • Fast artifact free reconstruction algorithm for limited data (PET) using constrained optimisation

    Publication Year: 1989, Page(s):367 - 372
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (368 KB)

    The stationary ring of detector systems in positron emission tomography (PET), provide insufficient and unevenly spaced samples per measured projection which lead into artifacts in the reconstruction. Ring motions such as the wobbling motion or the dichotomic sampling motion recently introduced, increase the number of samples but result in highly complex mechanical systems and a substantial increa... View full abstract»

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  • A new fast discrete Radon transform for enhancing linear features in noisy images

    Publication Year: 1989, Page(s):187 - 191
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (256 KB)

    Noise contributions along lines in an image tend to cancel because of the integration process, whereas contributions derived from a linear feature tend to be accentuated. Consequently, bright lines, which may be obscured by the noise in an image, appear as bright patches in Radon feature space, and conversely, dark lines appear as dark patches in Radon feature space. This process is particularly b... View full abstract»

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  • A new transform for image coding with reduced complexity and same performance as DCT

    Publication Year: 1989, Page(s):576 - 580
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (548 KB)

    Proposes a new transform for image coding with reduced arithmetic complexity and with quite comparable coding properties and performances to DCT. This transform is a real valued Fourier transform of the permuted set of data. It presents a very low arithmetic complexity (for example, 32 multiplications and 320 additions for a length of 8×8) compared to the DCT (112 multiplications and 470 add... View full abstract»

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  • Flow imaging using ultrasonic time-resolved transmission mode tomography

    Publication Year: 1989, Page(s):237 - 241
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (308 KB)

    Describes an image reconstruction algorithm for ultrasound tomography using time-resolved transmitting mode ultrasound. It is applicable to many ultrasound imaging areas and is particularly suitable for process tomography like multiphase flow imaging. The special feature of this algorithm is that it tests at a specific time the pulse's arrival instead of attenuation information. This algorithm is ... View full abstract»

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  • Monocular computer vision

    Publication Year: 1989, Page(s):107 - 111
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (252 KB)

    The human visual system is usually able to recognize objects as well as their spatial relations without the support of depth information like stereo vision. For this reason one can easily understand cartoons, photographs and movies. It is the aim of the authors' current research to exploit this aspect of human perception in the context of computer vision. From a monocular TV image one obtains info... View full abstract»

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  • Optimal speed up algorithms for template matching on SIMD hypercube multiprocessors with restricted local memory

    Publication Year: 1989, Page(s):151 - 155
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (304 KB)

    The authors propose two parallel template matching algorithms for hypercube multiprocessors with restricted local memory. Using the Gray code mapping, they reduce the communication overhead involved in the execution of template matching algorithms. Both algorithms have been shown to be optimal speed up View full abstract»

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  • A simple method of segmentation with subpixel accuracy

    Publication Year: 1989, Page(s):403 - 405
    Cited by:  Patents (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (216 KB)

    In order to identify boundaries with subpixel accuracy it is necessary to construct a continuous or at least high resolution model of the intensity function I inferred from the discrete values of the digitized image. An approach described by Haralick (1984) is to fit a cubic polynomial to the discrete image data in the region under consideration. In the paper an alternative method is described in ... View full abstract»

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  • Quantitative evaluation on edge preservation in multiresolution images

    Publication Year: 1989, Page(s):623 - 627
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (372 KB)

    Multiresolution image processing and analysis has become popular in recent years. In this approach, image data are represented in a hierarchical manner. The original images are usually placed at the bottom level, Images with reduced resolutions are then generated at successively higher levels. In this paper, a quantitative comparison of five techniques for obtaining multiresolution images is prese... View full abstract»

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  • Applying a two-stage translational picture encoding method by a single-dimensional cosine transformation

    Publication Year: 1989, Page(s):546 - 547
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (144 KB)

    Supplementing of transformational encoding by encoding a sequence of coefficients magnitudes in a decreasing order of magnitudes results in a to-stage transformational encoding method. When the method is applied to two-dimensional pictures, the method approximates the sequence of transform coefficients magnitudes as a decreasing function which is parametrically described by very few numbers. By us... View full abstract»

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  • Image analysis for biological objects

    Publication Year: 1989, Page(s):207 - 211
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (248 KB)

    Many processes in agriculture and horticulture require the visual assessment of the product. This is particularly true for grading fruit and vegetables, but also applies to automatic fruit harvesting, pruning, plant handling and many other applications where the workpieces are variable. Work at AFRC Engineering is investigating the possible applications of image processing and the techniques most ... View full abstract»

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  • Non-linear filters for removing noise from binary images

    Publication Year: 1989, Page(s):638 - 645
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (488 KB)

    The standard strategy described is highly effective for improving detection performance in many practical problems. Some variations are superior to the binary median filter which is frequently recommended. Scope exists nevertheless for developing the approach, for example, by storing the original triggers until filtering is complete so that degraded trigger clusters may be restored and the `W' pro... View full abstract»

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  • Image processing of patient's test charts in diagnostic ophthalmology

    Publication Year: 1989, Page(s):360 - 366
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (424 KB)

    In ophthalmic practice, the measurement and recording of a patient's medical charts is an essential part of the diagnosis, follow-up, and management of many eye diseases. An automatic chart reader system is described. This system has two (low and high) processing levels. It receives a hard copy of the raw chart data as the input. The output from the low processing level is a geometric description ... View full abstract»

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  • Image presentations for spinal kinematic analysis using digital videofluoroscopy

    Publication Year: 1989, Page(s):343 - 347
    Cited by:  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (344 KB)

    The investigation of spinal mechanics in injuries and other painful conditions is frustrated by the difficulty of measuring the kinematics between individual segments. Problems associated with current methods of measurement include the radiation dosage required, the limited accuracy obtainable and the inherent labour-intensive nature of the numerical procedures. The authors have developed a techni... View full abstract»

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  • A new method for image interpolation and its applications in image analysis

    Publication Year: 1989, Page(s):674 - 678
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (424 KB)

    A new method for digital image interpolation is discussed. This interpolation method takes account of the spatial characteristic of the image sensor. The general application of the algorithm has been described by Oakley and Cunningham (1989). Here, it is shown how the method can be used to generate Laplacian-of-Gaussian and directional derivatives of Gaussian images View full abstract»

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  • Algorithms and architectures for the analysis of road-traffic movements

    Publication Year: 1989, Page(s):182 - 186
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (304 KB)

    Under certain circumstances automatic data-capture systems based upon image processing techniques and applied to road-traffic situations offer significant advantage over more conventional techniques such as those employing inductive-loop detectors in that they are portable and do not require installation into the carriageway. The techniques have further potential in the areas of incident detection... View full abstract»

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