Multimodality image retrieval method

A multi-modal image and multi-modal technology, which is applied in the fields of instruments, calculations, electrical digital data processing, etc., can solve the problems of inaccurate retrieval results and loss of local details of pictures, etc.

Inactive Publication Date: 2016-02-10
THE HONG KONG POLYTECHNIC UNIV
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a multi-level image retrieval technology that can reflect the local detail features of the image, aiming at the problem that the feature based on the statistical histogram will lose the local details of the picture in the existing content-based image retrieval technology, resulting in inaccurate retrieval results. Modal Image Retrieval Methods

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Embodiment Construction

[0051] Aiming at the defect that the existing image retrieval method will lose the details of the image when counting the features of the histogram, resulting in inaccurate retrieval results, the present invention provides a feature description operator based on multimodal local PCA, under the premise of maintaining the details of the image Extract the color, texture or shape features of pictures to improve the accuracy of retrieval.

[0052] How to perform image retrieval based on the idea of ​​the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0053] Such as figure 1 Shown is the flow chart of the image retrieval method in this embodiment. First, in step S1, an image to be retrieved is input, and the planar image is digitized. For example, in a computer system, images can be input in different formats such as bmp images, jpg images, etc. In order to describe the image conveniently in the computer...

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Abstract

The invention provides a multimodality image retrieval method which comprises the following steps of S1, inputting a to-be-retrieved image; S21, extracting the color feature of the to-be-retrieved image; S22, extracting boundary angle features of the to-be-retrieved image; S3, fusing the color feature with the boundary angle features to obtain multimodal features; S4, comparing the multimodal features of the to-be-retrieved image with those of an image in a database; S5, outputting a retrieval result. By implementing the retrieval method for the multimodality image, provided by the invention, the image is divided into sub images, and the extraction of colors and angle features is performed through different channels, so that color, texture and shape features of pictures are extracted on the premise of maintaining details of the picture. The multimodality image retrieval method is particularly suitable for retrieving cloth and fashionable dress images.

Description

technical field [0001] The invention relates to a retrieval technology of image processing, more specifically, to a multimodal image retrieval method. Background technique [0002] Image retrieval is one of the main research hotspots in computer vision and pattern recognition. Image retrieval technology is mainly divided into two categories: Text-based image retrieval technology (TBIR for short) and content-based image retrieval technology (Content-based image retrieval, Abbreviated as CBIR). [0003] The research on text-based image retrieval technology began in the 1970s, using text descriptions to describe the characteristics of images, such as the size, genre, age, author, and objects in the painting. Text-based image retrieval generally queries images in the form of keywords, or searches for images under feature categories in the form of hierarchical directories. Therefore, the tag information of images directly affects the retrieval effect of images. It is obvious th...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G06F17/30
Inventor黄伟强崔燕
OwnerTHE HONG KONG POLYTECHNIC UNIV