Method and apparatus for protecting contents of pornography on internet

A method of filtering pornography contents on internet on the basis of contents of multimedia, comprising the steps of:

• extracting feature descriptor from multimedia data inputted through internet;
• measuring similarity by calculating vector distance between the extracted feature descriptor and that of the reference pornography;
• and
• determining whether it is a pornography or not by comparing the measured similarity and similarity measurement threshold value.

A method of filtering pornography contents in storage device on the basis of contents of multimedia data, comprising the steps of:

• inputting multimedia data from the storage device;
• extracting feature descriptor from the inputted multimedia data;
• measuring similarity by calculating vector distance between the extracted feature descriptor and that of the reference pornography, referring to database of reference pornography stored in a form of feature descriptor;
• and
• determining whether it is a pornography or not by comparing the measured similarity and similarity measurement threshold value.

A method of automatically generating database of pornography sites, comprising the steps of:

• inputting multimedia data from internet sites to be filtered;
• extracting feature descriptor from the inputted multimedia data;
• measuring similarity by calculating vector distance between the extracted feature descriptor and that of the reference pornography, referring to database of reference pornography stored in a form of the feature descriptor;
• determining whether it is a pornography or not by comparing the measured similarity and similarity measurement threshold value;
• and
• adding information of the internet site to database of pornography sites if it is determined to be pornography by the pornography determining step.

A method for blocking pornography sites from computers for server, comprising the steps of generating database of pornography sites and blocking connection of computers for clients to the internet site, if there is a request for connection of the computer for client to the internet sites stored in the database of pornography sites, wherein the step for generating database of pornography sites comprises the steps of:

• extracting feature descriptor of multimedia data inputted from internet sites to be filtered;
• measuring similarity by calculating vector distance between the extracted feature descriptor and that of the reference pornography, referring to the database of reference pornography stored in a form of feature descriptor;
• determining whether it is a pornography or not by comparing the measured similarity and similarity measurement threshold value;
• and
• adding information on the internet site to database of pornography sites if it is determined to be a pornography by the pornography determining step.

A method of filtering pornography contents of subscriber sites from computer for internet service supplier, comprising the steps of:

• inputting web document of the subscriber site from subscriber web database;
• extracting feature descriptor form multimedia data of the inputted web document;
• measuring similarity by calculating vector distance between the extracted feature descriptor and that of the reference pornography, referring to database of reference pornography stored in a form of feature descriptor;
• and
• determining whether it is a pornography or not by comparing the measured similarity and similarity measurement threshold value.

The recording media for reading computer having computer program for filtering pornography contents on the basis of contents of multimedia, wherein the computer program performs the steps of:

• extracting feature descriptor from inputted multimedia data;
• measuring similarity between the extracted feature descriptor and that of reference pornography contents;
• and
• determining whether it is a pornography or not by comparing the measured similarity and similarity measurement threshold value.

The recording media for reading computer having computer program for filtering pornography contents on internet on the basis of contents of multimedia, wherein the computer program performs the steps of:

• extracting feature descriptor from multimedia data inputted through internet;
• measuring similarity by calculating vector distance between the extracted feature descriptor and that of the reference pornography, referring to database of reference pornography stored in a form of feature descriptor;
• and
• determining whether it is a pornography or not by comparing the measured similarity and similarity measurement threshold value.

The recording media for reading computer having computer program for filtering pornography contents in storage device on the basis of contents of multimedia, wherein the computer program performs the steps of:

• extracting feature descriptor from multimedia data in storage device;
• measuring similarity by calculating vector distance between the extracted feature descriptor and that of the reference pornography, referring to database of reference pornography stored in a form of feature descriptor;
• and
• determining whether it is a pornography or not by comparing the measured similarity and similarity measurement threshold value.

The recording media for reading computer having computer program for automatically generating database of pornography sites, wherein the computer program performs the steps of:

• extracting feature descriptor from multimedia data inputted from internet sites to be filtered;
• measuring similarity by calculating vector distance between the extracted feature descriptor and that of the reference pornography, referring to database of reference pornography stored in a form of feature descriptor;
• determining whether it is a pornography or not by comparing the measured similarity and similarity threshold value;
• and
• adding information on the internet site to database of pornography sites, if it is determined to be a pornography by the pornography determining step.

The recording media for reading computer having computer program for blocking pornography sites from computer for server, wherein the computer program comprises the steps of generating database of pornography sites and blocking connection of the computer for client to the internet site, if there is a request for connection of computer for client to internet sites stored in the database of pornography site, and wherein the step for generating database of pornography sites performs the steps of:

• extracting feature descriptor from multimedia data inputted from internet sites to be filtered;
• measuring similarity by calculating vector distance between the extracted feature descriptor and that of the reference pornography, referring to database of reference pornography stored in a form of feature descriptor;
• determining whether it is a pornography or not by comparing the measured similarity and similarity measurement threshold value;
• and
• adding information on the internet site to database of pornography sites, if it is determined to be a pornography by the pornography determining step.

The recording media for reading computer having computer program for filtering pornography contents of subscriber sites from computer for internet service supplier, wherein the computer program performs the steps of:

• extracting feature descriptor from multimedia data inputted from subscriber site;
• measuring similarity by calculating vector distance between the extracted feature descriptor and that of the reference pornography, referring to database of reference pornography stored in a form of feature descriptor;
• and
• determining whether it is a pornography or not by comparing the measured similarity and similarity measurement threshold value.

A processing unit of multimedia data comprising:

• means for inputting multimedia data from Internet;
• means for extracting feature descriptor from the inputted multimedia data;
• memory means for storing reference pornography in a form of the feature descriptor;
• means for measuring similarity between the extracted feature descriptor and that of reference pornography stored in the memory means;
• and
• means for determining whether it is a pornography or not by comparing the measured similarity and similarity measurement threshold value.

A network connecting device for connecting a plurality of separated networks comprising:

• means for inputting multimedia data from internet;
• means for extracting feature descriptor from the inputted multimedia data;
• memory means for storing reference pornography in a form of the feature descriptor;
• means for measuring similarity between the extracted feature descriptor and that of reference pornography stored in the memory means;
• and
• means for determining whether it is a pornography or not by comparing the measured similarity and similarity measurement threshold value.

A LAN card installed in multimedia data processing unit for preparing LAN circumstances, comprising:

• means for inputting multimedia data from internet;
• means for extracting feature descriptor from the inputted multimedia data;
• memory means for storing reference pornography Ln a form of the feature descriptor;
• means for measuring similarity between the extracted feature descriptor and that of reference pornography stored in the memory means;
• and
• means for determining whether it is a pornography or not by comparing the measured similarity and similarity measurement threshold value.