Method of providing completely automated public turing test to tell computer and human apart based on image
First Claim
1. A method of providing an image-based completely automated public turing test to tell computer and humans apart (CAPTCHA), the method comprising the steps of:
- storing a plurality of randomly-selected images by session when a request for a web page is received from a user client;
providing the web page and a session ID to the user client;
generating a test image by mixing the plurality of images when a request for a test image corresponding to the session ID is received from the user client;
transmitting the generated test image to the user client;
receiving first identification information inputted by the user client about the test image; and
comparing the first identification information with second identification information included in Meta information of the test image.
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Accused Products
Abstract
Disclosed is a method of providing a completely automated public turing test to tell a computer and a human apart (CAPTCHA) based on image. The method comprises the steps of: storing a plurality of randomly-selected images by session when a request for a web page is received from a user client; providing the web page and a session ID to the user client; generating a test image by mixing the plurality of images when a request for a test image corresponding to the session ID is received from the user client; transmitting the generated test image to the user client; receiving at least one of first identification information inputted by the user about the test image from the user client; and comparing the first identification information with second identification information included in Meta information of the test image.
149 Citations
20 Claims
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1. A method of providing an image-based completely automated public turing test to tell computer and humans apart (CAPTCHA), the method comprising the steps of:
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storing a plurality of randomly-selected images by session when a request for a web page is received from a user client; providing the web page and a session ID to the user client; generating a test image by mixing the plurality of images when a request for a test image corresponding to the session ID is received from the user client; transmitting the generated test image to the user client; receiving first identification information inputted by the user client about the test image; and comparing the first identification information with second identification information included in Meta information of the test image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of providing an image-based CAPTCHA, the method comprising the steps of:
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storing a plurality of randomly-selected images by session when a request for a web page is received from a user client; providing the web page, a session ID and first identification information for each of the plurality of images to the user client; generating a test image by mixing the plurality of images when a request for the test image corresponding to the session ID is received from the user client; and transmitting the generated test image to the user client. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method of providing an image-based CAPTCHA, the method comprising the steps of:
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generating a test image by mixing a plurality of images; providing the test image to a user client; receiving first identification information for identifying the test image from the user client; and comparing the received first identification information with second identification information included in Meta information of the test image. - View Dependent Claims (20)
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Specification