Undirected graph approach can be used to enhance the quality of the process of boundary recognition. Since the coordinates of vertices and edges of graph are fixed and connected with specific pixels, the advantages of...
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Undirected graph approach can be used to enhance the quality of the process of boundary recognition. Since the coordinates of vertices and edges of graph are fixed and connected with specific pixels, the advantages of both can be combined. The algorithm presented in this article is much more efficient than the conventional techniques when used for images with high noise and severe disturbances.
We describe and demonstrate two sensors which produce registered depth and intensity data for scene description and model based image interpretation. The first sensor is a variation of the well established principle o...
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We describe and demonstrate two sensors which produce registered depth and intensity data for scene description and model based image interpretation. The first sensor is a variation of the well established principle of laser triangulation. The second sensor employs planar elliptical mirrors in a novel design to allow dynamic reconfiguration of the triangulation geometry. The operation of each sensor is illustrated by experimental data.
Automation of the image shearing measurement technique applied to optical fibre geometry is discussed. The use of both edge detection filters and a multi-layer perceptron neural network to identify the critical 'j...
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Automation of the image shearing measurement technique applied to optical fibre geometry is discussed. The use of both edge detection filters and a multi-layer perceptron neural network to identify the critical 'just touch' condition are compared. The repeatability of cladding diameter measurements using both methods are presented which demonstrate the superiority of the neural network technique.
We present here the description of a parallel implementation of mathematical morphology using the Linda model of parallel communication embedded within ISETL. The morphological operation of dilation of binary images i...
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We present here the description of a parallel implementation of mathematical morphology using the Linda model of parallel communication embedded within ISETL. The morphological operation of dilation of binary images is considered in detail, with an ISETL implementation given initially, then a description of how this was converted to run in a parallel version of ISETL, ISETL-Linda.
This study addresses the rapidly advancing subject of visual science including its inherent interdisciplinary nature and the benefits to be gained by those involved in digital imageprocessing.being aware of the subje...
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This study addresses the rapidly advancing subject of visual science including its inherent interdisciplinary nature and the benefits to be gained by those involved in digital imageprocessing.being aware of the subject and its key results. It is demonstrated how imageprocessing.can be inspired by the form, system or strategy of the visual systems of man and animals. The biological example used for this purpose is concerned with the application of instructional design theories developed for humans being applied to neural networks.
This paper concentrates on the estimation of dense depth maps from sequences of frames acquired by a sensor in controlled motion. The work addresses the computation of depth estimates at each time instant as well as t...
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This paper concentrates on the estimation of dense depth maps from sequences of frames acquired by a sensor in controlled motion. The work addresses the computation of depth estimates at each time instant as well as the dynamic fusion of estimates in time.
Three-dimensional facial asymmetry is measured by constructing the 3D surface using a projected structured light pattern viewed by binocular stereo cameras. The projected pattern is a set of vertical bars with random ...
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Three-dimensional facial asymmetry is measured by constructing the 3D surface using a projected structured light pattern viewed by binocular stereo cameras. The projected pattern is a set of vertical bars with random breaks to resolve the stereo matching ambiguity. The facial symmetry plane is obtained by performing stochastic minimisation with an L(1) error norm on the depth asymmetries.
The task of finding whether vertebral levels of the human spine can be mathematically differentiated is posed, using a morphometric database of the vertebral quantitative morphology as training set. There is no certai...
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The task of finding whether vertebral levels of the human spine can be mathematically differentiated is posed, using a morphometric database of the vertebral quantitative morphology as training set. There is no certainty in the medical community about this possibility. The axial projections of a number of vertebrae were digitized and their features quantified by automatic image analysis algorithms. These measurements build a spinal morphometric database. After the application of feature selection procedures, the selected measurements are used as inputs to different patternrecognition algorithms try to find whether vertebral levels can be distinguished. We have proved the capability to fulfill this classification with a small degree of uncertainty. Artificial neural networks, in particular, have shown their capability to perform well in this difficult patternrecognition task.
A new form of wavelet-based feature extraction is developed for the multiresolution analysis of multispectral imagery. This method is applicable to any vector field where the base space is Euclidean. Since the field v...
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A new form of wavelet-based feature extraction is developed for the multiresolution analysis of multispectral imagery. This method is applicable to any vector field where the base space is Euclidean. Since the field vectors lie in the fiber space and not on the base space, they can be abstract and of much higher dimension than the base space.
The parallel implementation of segmented image coding methods is investigated. Various approaches are examined and the results are evaluated using three different segmentation techniques permitting also a comparison o...
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The parallel implementation of segmented image coding methods is investigated. Various approaches are examined and the results are evaluated using three different segmentation techniques permitting also a comparison of them. The results show which approach is more efficient and also provide an insight in the design of parallel VLSI chips for faster coding.
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