279 search results - page 48 / 56 » Human Perception Based Color Image Quantization |
CGF
2006
13 years 7 months ago
2006
We conduct a series of experiments to investigate the desired properties of a tone mapping operator (TMO) and to design such an operator based on subjective data. We propose a nov...
SOUPS
2009
ACM
14 years 2 months ago
2009
ACM
The ASIRRA CAPTCHA [6], recently proposed at ACM CCS 2007, relies on the problem of distinguishing images of cats and dogs (a task that humans are very good at). The security of AS...
ICIP
2000
IEEE
14 years 9 months ago
2000
IEEE
This paper presents a novel face-assisted video coding scheme to enhance the visual quality of the face regions in video telephony applications. A skin-color based face detection ...
JMM2
2007
13 years 7 months ago
2007
—When automatically analyzing images of human faces, either for recognition in biometry applications or facial expression analysis in human machine interaction, one has to cope w...
SIBGRAPI
2008
IEEE
14 years 2 months ago
2008
IEEE
This paper presents a 3D face photography system based on a small set of training facial range images. The training set is composed by 2D texture and 3D range images (i.e. geometr...