Multiview-based underwater target classification system and method

A technology of underwater targets and targets, which is applied to instruments, character and pattern recognition, computer parts, etc., and can solve unseen problems

Active Publication Date: 2012-10-31
INST OF ACOUSTICS CHINESE ACAD OF SCI
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Problems solved by technology

However, we have not seen relevant records about the technical realization means of underwater target classification and recognition based on multi-view, which have been published by foreign countries.

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  • Multiview-based underwater target classification system and method
  • Multiview-based underwater target classification system and method
  • Multiview-based underwater target classification system and method

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Embodiment Construction

[0057] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0058] The underwater target classification method based on multi-view belongs to the category of pattern recognition. According to the composition of the pattern recognition system, a complete underwater target classification system involved in the present invention includes data acquisition and preprocessing, feature extraction, classifier design and classification. The judgment has four parts.

[0059] In the classification and recognition system of underwater targets, the data collected by the sonar sensor is the research object, which is usually a one-dimensional waveform or a two-dimensional image. In order to facilitate computer operation and processing, after measurement, sampling and quantification, it can be expressed in the form of matrix or vector. The function of preprocessing is to improve the quality of data, such as using som...

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Abstract

The invention relates to multiview-based underwater target classification system and method. The method is based on a mode recognition system the input data of which is multiview data obtained by radiating a target object from multiple angles; the method comprises the following steps: data acquisition and preprocessing: receiving and preprocessing the input multiview data; feature extraction: carrying out feature extraction on the preprocessed multiview data by adopting a feature algorithm suitable for multiview data; classifier designing: designing a classifier by adopting a hidden Markov model (HMM); classification judgment: judging the classifier to which the feature extracted from the multiview data is input, thus obtaining a classification result. By utilizing the method, through a plurality of acoustic susceptance and a plurality of information sources, multi-dimensional space data acquisition is carried out as feature extraction information sources in the underwater target classification system, the number of target feature vector dimensions is increased, and the information reliability can be improved.

Description

technical field [0001] The invention belongs to the field of underwater acoustic signal processing, and in particular relates to a multi-view-based underwater target classification system and method. Background technique [0002] Underwater target classification technology is an important part of modern sonar system and underwater acoustic countermeasures, and an important part of sonar post data processing. The classification and recognition technology of underwater targets has always attracted the attention of many scholars and researchers, but its development is relatively slow, and it is a recognized problem at home and abroad. On the one hand, due to the military involvement, countries keep the research results confidential, and there are few related technical reports; more importantly, the complex underwater background environment causes serious interference to target recognition. Such as low visibility caused by turbid water quality, reverberation effects caused by u...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62
Inventor 李昌志张扬帆田杰张春华
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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