Image retrieval method based on color and shape features

A shape feature and image retrieval technology, applied in the field of image processing, can solve the problems of inconvenient use and low accuracy of image retrieval methods, and achieve strong robustness, high retrieval precision, and accurate retrieval
CN101763429AInactive Publication Date: 2010-06-30SUN YAT SEN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SUN YAT SEN UNIV
Publication Date
2010-06-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an image retrieval method based on color and shape features. The method comprises that: a sample image is converted and quantized on color and space, the quantized image is divided into blocks, the color complexity of each pixel point of each subblock image is calculated and vision weight is obtained, the percentage of the vision weight of different colors in the vision weight of the subblock image is calculated for each subblock image and a weighting color histogram is obtained. The color feature of each subblock is obtained according to the weighting color histogram. Contour extraction is carried out on the sample image through grey processing. Curvature scale space is adopted to describe the image shape feature of operator extraction after the contour extraction. The extracted color feature and shape feature are normalized and the normalized image feature is obtained. The normalized image feature is matched in an image feature database through an index according to a similarity measurement formula and an index result is obtained. The index method of the invention is more accurate.
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Description

technical field

[0001] The invention relates to the technical field of image processing, in particular to an image retrieval method based on color and shape features. Background technique

[0002] In recent years, with the rapid development of computer technology and network media technology, the way of information expression has gradually changed from the common text form to the form of multimedia information such as graphics, images, animations, and videos. Among them, image, as the most extensive and basic multimedia information, has become an important form of popular digital information, and a large number of various image databases have also been produced, making image management and image retrieval gradually develop into an extremely important research field. .

[0003] Because ordinary text-based image retrieval methods need to annotate images, and image annotations are subjective and imprecise, and different people have different understandings of images, so the re...

Claims

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