944 search results - page 103 / 189 » An evaluation of image based steganography methods |
184
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ICCV
2009
IEEE
15 years 4 months ago
2009
IEEE
Most methods for object class segmentation are formulated as a labelling problem over a single choice of quantisation of an image space - pixels, segments or group of segments. It...
191
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ICPR
2002
IEEE
15 years 11 months ago
2002
IEEE
We present a fast method for locating iris features in frontal face images based on the Hough transform. It consists of an initial iris detection step and a tracking step which us...
148
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ICPR
2008
IEEE
16 years 1 months ago
2008
IEEE
In this study Principal Component Analysis (PCA), Non-negative Matrix Factorization (NMF) and Nonnegative Tensor Factorization (NTF) are applied as dimension reduction methods in ...
200
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ICIP
2005
IEEE
16 years 8 months ago
2005
IEEE
We investigate the implications of a unified spatiotemporal-chromatic basis for compression and reconstruction of image sequences. Different adaptive methods (PCA and ICA) are app...
181
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ICIP
2006
IEEE
16 years 8 months ago
2006
IEEE
Three-directional box-splines are particularly well-suited to interpolate and approximate hexagonally sampled data. In this paper, we propose a computationally efficient end-toend...