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Image search method, image search system, and information recording medium

An image retrieval and image technology, which is applied in the direction of still image data retrieval, still image data indexing, special data processing applications, etc., can solve the problems of decreased operation efficiency, high efficiency, and the possibility of noise in the retrieval results, etc.

Inactive Publication Date: 2016-05-25
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conversely, when images that are not suitable for similar images are included in the query set, there is a high possibility that noise will be included in the search results, and there is a risk that the work efficiency will decrease instead.

Method used

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  • Image search method, image search system, and information recording medium
  • Image search method, image search system, and information recording medium
  • Image search method, image search system, and information recording medium

Examples

Experimental program
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Effect test

Embodiment 1

[0034]

[0035] figure 1 It is a configuration diagram of the image retrieval system 100 according to Embodiment 1 of the present invention. The purpose of the image retrieval system 100 is to form query groups for a plurality of query images input by the user, and to aggregate search results for each group to improve the quality of the search query.

[0036] The image retrieval system 100 has an image / video storage device 101 , an input device 102 , a display device 103 , a data storage device 104 , and an image retrieval device 105 . Also, while in figure 1 is not shown in the figure, but may also have a camera so that the captured image can be directly input.

[0037] The image / video storage device 101 is a storage medium for storing image data and video (moving image) data, and can use a hard disk drive built in a computer, NAS (Network Attached Storage: Network Attached Storage), SAN (Storage Area Network: Storage Area Network), etc. connected storage system. In add...

Embodiment 2

[0138] In Embodiment 1, a method is described in which a large number of queries are classified into groups using the image retrieval device 105, and the tags of the image database 108 are updated using the retrieval results of each group, thereby improving the accuracy of the query. Utilizing the query classification function of the image search device 105 of the present invention, it is possible to accurately identify a common object included in many input images, and generate an analysis result useful for a set of input images. Hereinafter, in this embodiment, application to video analysis in which continuous frames captured by one or more cameras for a predetermined period of time are used as input will be described.

[0139] Figure 12 It is a diagram for explaining the processing of analyzing the type of vehicle in the camera image. The input to the image retrieval device 105 is the continuous frames 1201 acquired from one or more cameras for a predetermined period of t...

Embodiment 3

[0158] Regarding the image search device 105 of the present invention, the application to the task of assigning labels to images was described in Embodiment 1, and the application to the automatic estimation function of labels was described in Embodiment 2. In this embodiment, a method for realizing a more advanced search for similar images will be described.

[0159] In the similar image retrieval described in the previous embodiment, it is possible to retrieve images whose overall characteristics are similar to the input images from the database. On the other hand, if a partially similar image can be found by focusing on a partial region of an image, it can be applied to various applications. For example, in a figurative trademark search / examination system, if it is possible to automatically detect that a part of a figure to be examined is similar to a known figurative trademark, the efficiency of the examination work can be realized.

[0160] Figure 14 is a diagram for e...

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Abstract

The purpose of the present invention is to provide an image search technique whereby it is possible to accurately search for similar images using many queries. To achieve this purpose, a method by which to adjust grouping of queries to reflect received search results is also provided. An image search device according to the present invention is characterized by being provided with: an image storage unit which stores images and tag information about the images; an image input unit which receives an image; a search query generation unit which extracts, from the image, feature values for search queries; a similar image search unit which performs a similar-image search to obtain similar images and grouping information; a query grouping unit which divides the queries into groups in accordance with the obtained grouping information; a query group importance level determination unit which calculates the levels of importance of the groups; a search result generation unit which sorts the search results in accordance with the levels of importance of the groups; and a data output unit which outputs information about the search results for each group.

Description

technical field [0001] The invention relates to similar image retrieval technology. Background technique [0002] With the development of IT infrastructure, a large amount of multimedia data (text, video / image, voice, various log data, etc.) is stored in large-scale storage. In order to efficiently extract information from a large amount of stored data, various information extraction / retrieval technologies have been proposed and put into practical use for various media data. [0003] As an example of information extraction from an image, an image recognition technology that recognizes an object in an image and outputs its name is being studied. In such an image recognition technique, a "dictionary" in which a large number of images and labels describing the images are registered is prepared in advance, and it is checked which image in the dictionary the feature of a newly input image matches, thereby inferring the The label for the image. In addition, a method is also use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCG06F16/532G06F16/5866G06F16/5838G06F16/51G06F16/248G06F16/483
Inventor 渡边裕树广池敦
Owner HITACHI LTD
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