Image retrieval and filter apparatus based on image wavelet feature and method thereof

An image retrieval and wavelet feature technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as unfavorable feature storage and matching, complex image feature forms, and inability to achieve feature rotation invariance, etc. The effect of feature simplification, reduction of storage space and matching time, and improvement of matching speed
CN101515285AInactive Publication Date: 2009-08-26SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2009-08-26
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides an image retrieval and filter apparatus based on wavelet feature and a method thereof, relating to an image retrieval and filter method, in particular to a fast image retrieval and filter apparatus which is based on wavelet feature and has stronger invariability on operations such as rotating, noise increasing, filtering and scaling changing and the method thereof. The apparatus comprises a feature extracting unit and a match marking unit, wherein the feature extracting unit is used for carrying out tree-type structure scanning on the wavelet transformation coefficient after thresholding to effectively extracting the feature of the image, and the match marking unit is used for evaluating the matching degree of the image feature to be retrieved and the image feature in the store and outputting the marking of the matching degree. The invention realizes the aim of fastness, simplicity and unchanged rotation.
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Description

technical field

[0001] The invention relates to a device and method for image retrieval and filtering, in particular to a fast image retrieval and filtering device and method based on wavelet feature-based operations such as anti-rotation, noise addition, filtering, and scale change. Background technique

[0002] In recent years, with the continuous development of Internet technology and multimedia technology, massive images and video files have been widely disseminated through the Internet and other electronic media. The emergence of this new situation raises new questions: First, for the government and some companies, how to effectively monitor and filter these multimedia contents is an urgent and important issue related to national information security and enterprise information security. task; secondly, for the vast number of Internet users, can a fast and accurate retrieval technology be provided, so that users can retrieve the images they need in the vast network like ...

Claims

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