Sensitive image search method and device

A search method and image technology, applied in the field of search methods and devices for sensitive images, can solve the problems of large amount of calculation, large amount of errors, and large retrieval time consumption

Inactive Publication Date: 2013-09-11
BEIJING JETSEN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the dimension of the feature vector is high and the amount of calculation will be very large when the set of images to be matched is large, so the retrieval time is relatively large
But its disadvantage is that there is a large quantization error, so there will be more mismatches

Method used

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  • Sensitive image search method and device

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Embodiment Construction

[0072] A sensitive image search method and device according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0073] This patent proposes a content-based sensitive image search method and device. Use the current video frame image or key frame image as a query image, search in the sensitive image library, judge whether the query image is a sensitive image or contains sensitive images according to the retrieval result, and output the detection result.

[0074] The invention discloses a sensitive image search method, such as figure 1 shown, including the following steps:

[0075] Step 100: build an index offline;

[0076] The offline indexing phase includes the following four main steps, such as figure 2 Shown:

[0077] 201. Establish a visual dictionary (VisualVocabulary)

[0078] For each sensitive picture in the established sensitive picture library, it is described by a BOW (Bag-of-Visual Words) mo...

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Abstract

The invention discloses a sensitive image search method and device and belongs to the field of image processing. The method includes the steps of extracting a local feature vector set of an image to be searched, generating feature vectors of the image, searching a reverse index of a set sensitive image library according to the feature vectors to acquire all sensitive images related to the image to be searched, calculating the similarity between the image to be searched and all the sensitive images, initially sequencing all the sensitive images according to the similarity, screening all the sensitive images acquired by initial sequencing by using image feature points, and giving an alarm if returned result images are the sensitive images. According to the sensitive image search method and device, search on sensitive images or pictures in video content is achieved by utilizing the image analysis and retrieval technique based on content, a large amount of labor is saved, good real-time performance is achieved, real-time analysis and detection can be achieved during video display, and an alarming signal is sent out immediately once the sensitive images or pictures appear in the video content.

Description

technical field [0001] The invention belongs to the field of image processing, and relates to a search method and device for sensitive pictures in broadcast television programs and network video contents. Background technique [0002] With the construction of the national broadband network and the rapid development of the Internet, more and more Internet users watch and share content-rich video programs through online video websites. At the same time, with the development of triple play, IPTV network high-definition TV and Internet TV began to be popular in ordinary families. Internet videos and TV programs spread fast and have a wide range of influence. [0003] In some Internet videos and Internet TV programs, criminals often play some illegal videos in the video content, or insert some illegal sensitive pictures in the video screen. Existing detection methods are usually reviewed manually, and their disadvantages are that the workload is huge and they are not real-time....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30G06K9/46
Inventor 方伟苏鹏宇
Owner BEIJING JETSEN TECH
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