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Image content retrieval method based on hierarchical color distribution descriptor

A technology of color distribution and image content, applied in special data processing applications, instruments, electrical and digital data processing, etc. Retrieval efficiency, simple structure, and the effect of improving retrieval speed

Active Publication Date: 2012-01-04
SHANGHAI FIRSTBRAVE INFORMATION TECH
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Problems solved by technology

[0015] Although the feature data of the invariant moment method is invariant to the rotation and scaling of the image, since this statistic has no clear physical meaning, it cannot accurately describe the image, so the retrieval result is quite rough and cannot meet the requirements of efficient Data Access Requirements

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  • Image content retrieval method based on hierarchical color distribution descriptor
  • Image content retrieval method based on hierarchical color distribution descriptor
  • Image content retrieval method based on hierarchical color distribution descriptor

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Embodiment Construction

[0036] The following will combine Figure 1 ~ Figure 5 The image content retrieval method based on the graded color distribution descriptor of the present invention will be further described in detail.

[0037] See figure 1 The image content retrieval method based on the graded color distribution descriptor of the present invention includes the following steps:

[0038] Step 1. The user inputs the image to be queried and retrieval requirements into the retrieval system;

[0039] Step 2: The retrieval system constructs a graded color distribution descriptor of the image to be queried;

[0040] Step 2.1, the retrieval system divides the image to be queried into K 1 ×K 2 Image blocks, and calculate the average value of each image block, where K 1 And K 2 Are even numbers;

[0041] Preferably, n 1 =2,3,......; n 2 =2,3,......;

[0042] When the image to be queried is a grayscale image, the average value is the average of the gray values ​​of all pixels in the image block, and when the ima...

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Abstract

The invention relates to an image content retrieval method based on a hierarchical color distribution descriptor, which comprises the following steps that: 1, a user inputs an image to be queried and a retrieval requirement into a retrieval system; 2, the retrieval system constructs the hierarchical color distribution descriptor of the image to be queried; 3, the retrieval system performs hierarchical filtering on a characteristic database by using the hierarchical color distribution descriptor of the image to be queried until the retrieval requirement is met to obtain a final characteristic database; 4, the retrieval system searches a corresponding image from an image database according to the final characteristic database and feeds the searched image back to the user; and 5, the user performs further searching according to a feedback result. By the image content retrieval method based on the hierarchical color distribution descriptor, the hierarchical color distribution descriptor is constructed to accurately describe the image, so that image content retrieval efficiency can be greatly improved.

Description

Technical field [0001] The present invention relates to image retrieval, in particular to an image content retrieval method based on graded color distribution descriptors. Background technique [0002] With the rapid development of science and technology, the popularization of computers and broadband networks, the promotion of digital acquisition devices and digital storage devices, the amount of various multimedia information data including text, images, video, audio, etc. is increasing at an alarming rate . How to find useful information from massive data as soon as possible has become a serious problem. Therefore, efficient access to data, especially efficient access to visual information data, has become more and more important. [0003] In order to effectively solve this problem, people have proposed a content-based retrieval method, which automatically obtains the content through the analysis of visual information characteristics, thereby opening up a way for efficient infor...

Claims

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Application Information

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IPC IPC(8): G06F17/30
Inventor 吴冠勇孔晓东
Owner SHANGHAI FIRSTBRAVE INFORMATION TECH
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