The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 26, 2010
Filed:
Jan. 31, 2005
Kumar H. Chellapilla, Sammamish, WA (US);
Patrice Y. Simard, Bellevue, WA (US);
Shannon A. Kallin, Redmond, WA (US);
Erren Dusan Lester, Renton, WA (US);
Ismail Cem Paya, Seattle, WA (US);
Kumar H. Chellapilla, Sammamish, WA (US);
Patrice Y. Simard, Bellevue, WA (US);
Shannon A. Kallin, Redmond, WA (US);
Erren Dusan Lester, Renton, WA (US);
Ismail Cem Paya, Seattle, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
The subject invention provides a unique system and method that facilitates creating HIP challenges (HIPs) that can be readily segmented and solved by human users but that are too difficult for non-human users. More specifically, the system and method utilize a variety of unique alteration techniques that are segmentation-based. For example, the system and method employ thicker arcs or occlusions that do not intersect characters already placed in the HIP. The thickness of the arc can be measured or determined by the thickness of the characters in the HIP. In addition to increasing the thickness, the arcs can be lengthened because longer arcs tend to resemble pieces of characters and may be harder to erode. Usability maps can be generated and used to selectively place clutter or occlusions and to selectively warp characters or the character sequence to facilitate human recognition of the characters.