Two sets of features - perceptual features and co-occurrence features - were used in classification experiments. The ability of each set was verified in a pilot experiment for classification of 16 typical natural text...
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Two sets of features - perceptual features and co-occurrence features - were used in classification experiments. The ability of each set was verified in a pilot experiment for classification of 16 typical natural texture patterns. In the main study several practical problems concerning usage of textural features are considered by using pairs of multispectral images sensed at different altitudes on the same day. It was verified that adequate features could be selected by visual estimation. Finally, the effects of spectral bands and resolution are mentioned. This work was applied to agricultural land use classification.
This paper concerns methods for indexing areas in two-dimensional array data. A method for naming subpictures from raster scan image data is presented with notation that eases their subsequent storage access. Equation...
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This paper concerns methods for indexing areas in two-dimensional array data. A method for naming subpictures from raster scan image data is presented with notation that eases their subsequent storage access. Equations are given for converting each subpicture name into a storage-location pointer. A function ″NUMERIC″ to take an area name and return its unique relative offset on auxiliary storage is presented. Algorithms enabling efficient retrieval of subpicture areas from sequential and direct access files are presented.
Sixty-three papers were presented at the conference held at Rensselaer Polytechnic Institute in June, 1977. Areas of coverage were pattern and image analysis, image models, medical applications, speech pattern recogni...
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Sixty-three papers were presented at the conference held at Rensselaer Polytechnic Institute in June, 1977. Areas of coverage were pattern and image analysis, image models, medical applications, speech patternrecognition, syntactic patternrecognition, industrial applications, shape analysis, scene analysis, multi-imageprocessing, statistical patternrecognition, and character and signature recognition.
This paper considers both the Hueckel operator and a recently introduced class of edge detectors implemented as two-dimensional infinite impulse response (IIR) or recursive digital filters. The latter were originally ...
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This paper considers both the Hueckel operator and a recently introduced class of edge detectors implemented as two-dimensional infinite impulse response (IIR) or recursive digital filters. The latter were originally developed on the basis of least mean-square Wiener spatial filtering concepts for an assumed stochastic model of edge structure in typical imagery data. These two schemes are compared with respect to performance, computational complexity and suitability for specific applications. Problems in making these comparisons are discussed. The implementations of both operators used for this comparison are described.
Some of the research topics in patternrecognition, data base management and information retrieval are reviewed. Specifically discussed are applications of the methods of patternrecognition in the solution of some im...
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Some of the research topics in patternrecognition, data base management and information retrieval are reviewed. Specifically discussed are applications of the methods of patternrecognition in the solution of some important problems in the management of large data bases.
A new method is proposed for correcting possible errors in phonemic-strings which are obtained by some preprocessing of spoken words and then applying statistical decision to resulting features. The proposed method us...
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A new method is proposed for correcting possible errors in phonemic-strings which are obtained by some preprocessing of spoken words and then applying statistical decision to resulting features. The proposed method uses new distance measure and the available linguistic information in the form of rules of the following two types: rules obtained from the theory of word formation (from phonemes) in English, and rules needed to correct some error made by statical decision rules used earlier. In an experiment, involving 400 utterances and 40 words, an error correction rate of over 99 percent was achieved using the proposed error correction method.
The paper discusses various syntactic and nonsyntactic techniques for shape analysis. The advantages and disadvantages of each technique are pointed out through examples and on the basis of results from the theory of ...
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The paper discusses various syntactic and nonsyntactic techniques for shape analysis. The advantages and disadvantages of each technique are pointed out through examples and on the basis of results from the theory of computation.
A tutorial survey of techniques for using contextual information in patternrecognition is presented. Emphasis is placed on the problems of image classification and text recognition, where the text is in the form of m...
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A tutorial survey of techniques for using contextual information in patternrecognition is presented. Emphasis is placed on the problems of image classification and text recognition, where the text is in the form of machine and handprinted characters, cursive script, and speech. The related problems of scene analysis, natural language understanding, and error-correcting compilers are only lightly touched upon.
Significant energy savings in the paper industry can result from characterization of paper pulps by direct measurement of fiber morphology with automatic methods. The various fiber properties are discussed for which a...
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Significant energy savings in the paper industry can result from characterization of paper pulps by direct measurement of fiber morphology with automatic methods. The various fiber properties are discussed for which automatic image analysis applied to microscope images of pulps can yield savings of materials and energy. computational algorithms applied to actual fiber data are shown to yield useful measurements for fiber length, curl, and potentially other properties. New fiber morphology measurement algorithms can include curl and length as special cases. Potentials for collaboration between the paper industry and the image analysis instrument industry are explored.
A new modular speaker recognition system AUROS consisting of a set of real-time speech analysis processors and a flexible patternrecognition software package has been used for comparative studies. The system structur...
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A new modular speaker recognition system AUROS consisting of a set of real-time speech analysis processors and a flexible patternrecognition software package has been used for comparative studies. The system structure is described and results obtained by AUROS are discussed.
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