853 search results - page 16 / 171 » Flexible authentication of images |
JDCTA
2010
13 years 2 months ago
2010
This paper proposes a watermarking algorithm based on correlation to authenticate image content. The original image is converted to YIQ space first, then subdivided into 8
CORR
2011
Springer
13 years 2 months ago
2011
Springer
This paper proposes a strict authentication watermarking for medical images. In this scheme, we define region of interest (ROI) by taking the smallest rectangle around an image. T...
ISCAS
2003
IEEE
14 years 25 days ago
2003
IEEE
In this paper, we present a data hiding algorithm for binary document images. This algorithm is based on the DistanceReciprocal Distortion Measure [1] that is used to evaluate the...
SOUPS
2005
ACM
14 years 1 months ago
2005
ACM
Graphical passwords are an alternative to alphanumeric passwords in which users click on images to authenticate themselves rather than type alphanumeric strings. We have developed...
ICASSP
2011
IEEE
12 years 11 months ago
2011
IEEE
Fingerprint scanners have unique patterns that can be used to distinguish one scanner from another one. The pattern, which we call scanner pattern, stems from the variability of d...