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ÇѱÛÁ¦¸ñ(Korean Title) |
À̹ÌÁö-ÅؽºÆ® À¶ÇÕ Ä¸Â÷¸¦ À§ÇÑ Ä¸Â÷¿ë À̹ÌÁö µ¥ÀÌÅͺ£À̽º ÀÚµ¿ ±¸¼º |
¿µ¹®Á¦¸ñ(English Title) |
Automatic image database construction for image-text fusion CAPTCHA |
ÀúÀÚ(Author) |
¾È¿¬Âù
±èÀ¯¼º
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¿ø¹®¼ö·Ïó(Citation) |
VOL 27 NO. 02 PP. 0027 ~ 0042 (2011. 08) |
Çѱ۳»¿ë (Korean Abstract) |
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¿µ¹®³»¿ë (English Abstract) |
The previous image database construction methods for the image-based CAPTCHA were not able to collect very large number of accurate images, so it causes problems of low security, low accuracy, and operation restrictions caused from the necessity of manual tasks. To solve these problems, in this paper, a fully-automated image database construction method for image-text fusion CAPTCHA is proposed. The proposed method uses the image in encyclopedia as the reference image for CAPTCHA¡¯s keyword and collects only very similar images from the Internet with respect to the similarity based on object segments after removing background segments from images. The proposed image database construction method can achieve up to 95% accuracy for image-text fusion CAPTCHA. Furthermore the security level of image-text fusion CAPTCHA against automated bot program¡¯s intelligent attacks can be improved by adding multiple reference images from other encyclopedias.
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Å°¿öµå(Keyword) |
À̹ÌÁö µ¥ÀÌÅͺ£À̽º ±¸¼º
À̹ÌÁö-ÅؽºÆ® À¶ÇÕ Ä¸Â÷
¿ÏÀü ÀÚµ¿È
º¸¾È¼º
image database construction
image-text fusion CAPTCHA
full automation
security
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ÆÄÀÏ÷ºÎ |
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