KR20020027987A - Method and apparatus for protecting contents of porno - Google Patents

Abstract

The disclosed pornography blocking method and blocking device determines whether the multimedia data is obscene and prevents the user from accessing the pornographic material when it is determined to be pornographic.

In addition to receiving a database where URLs of pornographic sites are stored, and URLs accessed by user computers, the database can query and respond to pornographic materials, and allow or block user computers from accessing the URLs according to the response results. If the URL is not in the list, the main server requests to determine whether it is pornographic material, and the main server receives the HTML document of the URL requesting the pornography to determine whether it is pornographic material. In addition to the pornographic site discrimination engine to store in addition to, the user receives a URL that you want to access, query the received URL on the pre-stored pornographic list in the database to receive a response whether the pornographic site, the response result of the pornographic site Depending on whether or not your computer Permit or block, and to a case in allowing access of the URL is determined whether or not the pornography sites and stores added to the explicit content list in the database if it is determined as a pornography site.

Description

Method and apparatus for protecting sexually explicit material {Method and apparatus for protecting contents of porno}

The present invention determines whether pornography of multimedia data in the Internet-based world wide web (hereinafter, abbreviated as 'web'), and block the method of blocking pornography if it is determined to be multimedia data of pornography. Relates to a device.

With the rapid development of communication technology and computer field, the Internet has become an essential means of acquiring and exchanging information, and its functions and roles are exploding. The Internet is formed by connecting Internet subscribers to their computers through an information network and / or an internet network to which specific servers are connected. Internet subscribers access the site through a computer and then utilize various information and / or services provided by the website. In addition, the Internet is not limited to data communication between people belonging to a specific service group, and is able to acquire predetermined information without being divided into countries or regions, and use the provided services. It is set up as a communication network.

And with the confidence of the Internet, many websites are being created and growing. In particular, the various information provided by the website is promoting the spread of the Internet. Meanwhile, with the expansion of new business areas such as e-business, various multimedia contents including not only texts but also voices, music, images, and 3D images are provided through websites.

In the meantime, commercial pornography sites have been relatively increased, making it easy for anyone to access in the spread of the Internet environment, and the exposure of pornography to minors is a very serious situation, causing new social problems. Therefore, it is very urgent to block minors from accessing pornography sites over the Internet.

In order to block access to pornography sites through the Internet, minors are conventionally analyzed by analyzing characters of a URL address or a homepage, and if they are considered to be pornography, they are blocked. However, as described above, since the method of blocking the pornographic material is performed irrespective of the contents of the multimedia data, there is a limit to the blocking of the multimedia data that is the target of the actual pornographic material such as video and audio. Therefore, there is a demand for a technology that accurately determines whether or not obscenity is determined according to the contents of multimedia data, and blocks it when it is determined to be an obscene site. However, it is very difficult to determine whether or not sexually explicit by analyzing the content of the vast amount of digital multimedia data on the website, and also has a problem that takes a lot of time.

On the other hand, international standardization of Moving Picture Experts Group-7 (MPEG-7) has been recently performed for efficient storage and retrieval of vast multimedia data. The standardization in MPEG-7 consists of a descriptor that expresses multimedia features such as voice and video with a small amount and high efficiency, and a descriptor scheme composed of a combination of these descriptors.

The MPEG-7 descriptor extracts certain features from the contents of the data (spatial relations, colors, textures, shapes, object movements, sounds, sound widths, and spectrums) and is expressed in the form of specific vectors.

Accordingly, an object of the present invention is to provide a method and a blocker for blocking pornographic material that accurately determines and blocks pornographic material based on the contents of multimedia data.

It is another object of the present invention to provide a method and a blocker for blocking pornographic material that can quickly and efficiently determine and block whether or not massive multimedia data on a website is pornographic material.

Another object of the present invention and the pornography list filtering method for determining whether or not pornographic material using the list (list) of the determined pornographic site. The present invention provides a method for blocking pornography and a blocking device for determining and blocking a pornography site at a high speed by performing a pornography rating determination engine that determines pornography based on the contents of multimedia data.

1 is a view showing the configuration of the obscene material blocking apparatus of the present invention,

2 is a view showing a pornographic site discrimination engine used in the pornographic blocking device of the present invention,

3A and 3B are signal flows illustrating a method for blocking pornography of the present invention.

* Description of the symbols for the main parts of the drawings *

10: user computer 12: main server

14: database 16: obscene site discrimination engine

18: Web Document

According to the method for blocking pornography according to the present invention for achieving the above object, the first process of receiving a URL to the user computer to access; A second step of receiving a response indicating whether the pornography site is a query by querying the pornography list previously stored in the database of the URL received in the first step; A third step of allowing or blocking a user computer from accessing a corresponding URL according to whether or not the pornography site is a result of the response in the second step; A fourth step of determining whether or not the pornography site is allowed when access to the corresponding URL is allowed in the third step; And a fifth process of additionally storing the pornography site in the database if the pornography site is determined in the fourth process.

And the third process; Determining a harmful rating for pornographic sites, allowing or blocking the access of the URL according to the determined harmful rating, the fourth process; An eleventh process of receiving an HTML document from a corresponding URL and analyzing and generating a list of multimedia files; A twelfth step of extracting a predetermined feature for determining pornography from the multimedia file generated in the eleventh step; A thirteenth step of comparing a predetermined feature extracted in the twelfth step with a sample of a predetermined pornography judgment to measure similarity, and weighting a weight of each multimedia file in the corresponding page to calculate an overall vocal grade of the page; And a fourteenth process of determining whether or not the pornographic site is based on the measurement and calculation result in the thirteenth process.

The twelfth process; Extracting features of color, texture, and shape from the received multimedia file; When an image size of a predetermined multimedia file is equal to or larger than a preset size, it is determined whether or not a pornography site is provided by the similarity of the image without weighting.

In addition, according to the pornographic blocking device of the present invention, the database of the URL of the pornographic site is stored and output as a pornographic list; Receives the URL of the website that the user wants to access, asks and responds to the database whether it is a pornography site, and allows or blocks the user's computer to access the URL according to the response result. In the case of the main server for requesting the determination of whether pornography; And a pornography site discrimination engine that receives the HTML document of a URL for requesting pornography discrimination and determines whether the pornography site is a pornographic site, and adds the URL to the pornography list of the database to store the pornographic site. It is done.

Hereinafter, with reference to the accompanying drawings will be described in detail the obscene material blocking method and apparatus of the present invention.

1 is a view showing the configuration of the obscene material blocking apparatus of the present invention. As shown in the drawing, the present invention first transmits a URL of a website to be accessed by the user computer 10 to the main server 12. Then, the main server 12 inquires whether the URL of the website received from the user computer 10 is the URL in the pornography list of the database 14, and receives a response to the query from the database 14.

That is, the database 14 previously stores a list of URLs for pornographic sites determined by the pornographic site discrimination engine 16, which will be described later, and the main server 12 is configured to access a web to which the user computer 10 attempts to access. The query is queried if the URL of the site is in the URL list of the pornographic site stored in the database 14, and a response is received.

In the case of the URL in the pornography list of the query and response result database 14, the main server 12 transmits a blocking signal to the user computer 10 to block access. In the case where the URL is not in the pornography list of the query and response result database 14, the main server 12 requests the lewd site determination engine 16 to determine whether pornography is present.

The obscene site discrimination engine 16 is composed of four parts, as shown in FIG. 2, for example, and multimedia data, that is, a web document 18 of a URL that a user wants to access is inputted (1). 20, metadata is extracted from the input web document 18 based on the MPEG-7 standard (22). Here, MPEG-7 metadata is composed of MPEG-7 standard descriptors expressing features such as spatial relations, colors, textures, shapes, object movements, sounds, widths, and spectrums, and their constructions. The meta data is used to determine whether pornography is included, that is, the grade of the pornography (24), and whether to block or display a web page using the pornography determination result is determined (26).

If the result of the determination is a pornography site, it is added to the pornography list of the database 14 and stored, and the user's computer 10 cannot access the site. Allow access to 18.

3A and 3B are signal flows illustrating a method for blocking pornography of the present invention. As shown in FIG. 300, in step 300, the URL of the website to be accessed by the user computer 10 is transmitted to the main server 12, and the main server 12 receives the user computer 10 in step 302. The URL of the website to be accessed is compared with a URL corresponding to a blocking level to be applied according to a user group (age group by age group) in the pornography list stored in the database 14.

If it is determined that the pornography site has a high harmful level in the next step 304, the block signal of the website is transmitted to the user computer 10 in step 306, and then the user computer 10 is connected in step 308. Block and connect to the recommended site.

If it is determined in step 304 that the harmful level is low or not in the pornography list, the access permission signal of the website is transmitted to the user computer 10 in step 310, and the user computer 10 in step 312. Link to the site you want to access.

In addition, when the determination result of the step 304 is not in the pornography list, in step 314, the website of the website to be accessed by the user computer 10 is handed over to the obscene site determination engine 16, and the pornography rating of the website is passed. Ask for analysis.

The obscene site discrimination engine 16 receives the HTML document from the URL for which the pornographic grade analysis is requested in step 316, analyzes the HTML document received in step 318, that is, the web document 18, and analyzes the HTML document. Create a list of multimedia files such as image and video files included in the.

In the next step 320, the analyzed multimedia file is received, and the predetermined feature is extracted from the multimedia file received in step 322, that is, the feature is received through the feature extraction engine included in the obscene site discrimination engine 16. Extracted from multimedia files by features such as color, texture, and shape.

When the predetermined feature is extracted from the multimedia file in this way, the extracted predetermined feature is compared with the feature database of the reference pornographic sample stored in advance in step 324 to measure similarity, and the page in step 326. The overall similarity of the multimedia files in the page is measured, that is, the weight of each multimedia file included in the page is weighted in the page to calculate the degree of obsceneness of the entire page.

Here, an operation of calculating an obscene grade of the overall page by weighting the weight of the multimedia files in the page will be described.

If the similarity is called D, the threshold is T, the number of X-axis pixels in the i th figure is Xi, and the number of Y axes in the i th figure is Yi, the total number of pixels in the i th figure is Xi * Yi becomes and the similarity becomes Di.

Then, the similarity magnitude Si of the i th picture is expressed by Equation 1 below.

Si = (Xi * Yi) * Di

When the calculated size of similarity Si is larger than the size of the threshold value (Xi * Yi) * T, it becomes non-descriptive material.

Then, the degree of obscene Mi is as shown in Equation 2 below.

Mi = Si-(Xi * Yi) * T = (Xi * Yi) * Di-(Xi * Yi) * T

= (Xi * Yi) * (Di-T)

When the sum of the degrees of indecentness is obtained, the following equation (3) is obtained.

If the sum of the degree of indetermination obtained from Equation 3 is less than or equal to '0', it becomes a site having a large ratio of indecent pictures.

In addition, in the case where the predetermined image in the page is not large enough to ignore the size, that is, the image having a predetermined size or more, the similarity is determined based only on the similarity of the image itself (reference pornographic sample feature database). Determine.

In this way, when the calculation of the sexually explicit grade is completed, in step 328, the result of the measurement is determined, and when the similarity is higher than the preset threshold, in step 330, the corresponding URL is added to the pornographic list of the database 14 Save it. In operation 332, after the measurement result is determined and the similarity is lower than the preset threshold or the similarity is higher than the preset threshold, the corresponding URL is additionally stored in the pornography list of the database 14. ), Record the result of the processing and save the URL.

As described above, according to the present invention, when the user computer accesses a predetermined website, a list of pornographic sites is used to determine whether or not the predetermined website is to be accessed by the user computer. In addition, in the case of a website that is not on the pornography list, the pornography rating engine is used to determine whether the pornography is in addition to the pornography list in the database and store the pornography site. have.

Claims (6)

A first step of receiving a URL to be accessed by a user computer; A second step of receiving a response indicating whether the pornography site is a query by querying the pornography list previously stored in the database of the URL received in the first step; A third step of allowing or blocking a user computer from accessing a corresponding URL according to whether or not the pornography site is a result of the response in the second step; A fourth step of determining whether or not the pornography site is allowed when access to the corresponding URL is allowed in the third step; And And a fifth process of adding and storing the pornography site in the database if the pornography site is determined in the fourth process. The method of claim 1, wherein the third process comprises: Determination of harmful ratings for pornographic sites, and the method for blocking pornography, characterized in that to allow or block the access of the URL according to the determined harmful ratings. The method of claim 1, wherein the fourth process comprises; An eleventh process of receiving an HTML document from a corresponding URL and analyzing and generating a list of multimedia files; A twelfth step of extracting a predetermined feature for determining pornography from the multimedia file generated in the eleventh step; A thirteenth step of comparing a predetermined feature extracted in the twelfth step with a sample of a predetermined pornography judgment to measure similarity, and weighting a weight of each multimedia file in the corresponding page to calculate an overall vocal grade of the page; And 14. The method of claim 13, wherein the determining of whether the pornography site is performed based on the measurement and the calculation result is performed in the thirteenth process. The method of claim 3, wherein the twelfth process comprises: A method for blocking pornography, characterized by extracting features of color, texture, and shape from a received multimedia file. The method of claim 3, wherein the fourteenth process comprises: When the image size of a predetermined multimedia file is larger than a predetermined size, the pornography blocking method characterized in that it is determined whether or not the pornographic site by the similarity of the image without weight. A database in which the URL of the pornography site is stored and output as a pornography list; It is a URL that is not in the pornography list as well as allowing or blocking the user's computer access to the URL based on the response result. A main server for requesting determination of pornography in a case; And The main server receives an HTML document of a URL for requesting pornography to determine whether it is a pornography site, and in the case of a pornography site, the pornography site discrimination engine configured to add and store the URL to the pornography list of the database. Sexually explicit material blocking device.