442 search results - page 1 / 89 » What's up CAPTCHA |
WWW
2009
ACM
14 years 5 months ago
2009
ACM
We present a new CAPTCHA which is based on identifying an image's upright orientation. This task requires analysis of the often complex contents of an image, a task which hum...
NIPS
2008
13 years 6 months ago
2008
CAPTCHAs are computer-generated tests that humans can pass but current computer systems cannot. CAPTCHAs provide a method for automatically distinguishing a human from a computer ...
SP
2010
IEEE
13 years 8 months ago
2010
IEEE
—Captchas are designed to be easy for humans but hard for machines. However, most recent research has focused only on making them hard for machines. In this paper, we present wha...
VL
1999
IEEE
13 years 9 months ago
1999
IEEE
Although there has been considerable research into ways to design visual programming environments to improve the processes of creating new programs and of understanding existing o...
ICPR
2006
IEEE
14 years 6 months ago
2006
IEEE
It is a well documented fact that, for human readers, familiar text is more legible than unfamiliar text. Current-generation computer vision systems also are able to exploit some ...