141 search results - page 12 / 29 » Unsupervised Image Classification with a Hierarchical EM Alg... |
TIP
2010
13 years 2 months ago
2010
This paper proposes an approach for recognizing human activities (more specifically, pedestrian trajectories) in video sequences, in a surveillance context. A system for automatic ...
ICIP
2007
IEEE
14 years 1 months ago
2007
IEEE
In this paper, we propose a general two-dimensional hidden Markov model (2D-HMM), where dependency of the state transition probability on any state is allowed as long as causality...
CBMS
2004
IEEE
13 years 11 months ago
2004
IEEE
A new algorithm is proposed for performing unsupervised tissue classification in medical images by integrating conventional clustering techniques with edge-adaptive segmentation t...
ICCV
2007
IEEE
14 years 9 months ago
2007
IEEE
Unsupervised categorization of images or image parts is often needed for image and video summarization or as a preprocessing step in supervised methods for classification, trackin...
CVPR
2008
IEEE
14 years 9 months ago
2008
IEEE
A novel approach to scene categorization is proposed. Similar to previous works of [11, 15, 3, 12], we introduce an intermediate space, based on a low dimensional semantic "t...