20 search results - page 2 / 4 » Signal and image approximation with level-set constraints |
ICASSP
2010
IEEE
13 years 5 months ago
2010
IEEE
Nonnegative matrix factorization (NMF) is a widely-used tool for obtaining low-rank approximations of nonnegative data such as digital images, audio signals, textual data, financ...
ISBI
2011
IEEE
12 years 9 months ago
2011
IEEE
For medical image analysis, the test statistic of the measurements is usually constructed at every voxels in space and thresholded to determine the regions of significant signals...
IWDW
2005
Springer
13 years 10 months ago
2005
Springer
The development of watermarking schemes in the literature is generally guided by a power constraint on the watermark to be embedded into the host. In a steganographic framework the...
DAGSTUHL
2007
13 years 6 months ago
2007
We address the problem of finding sparse wavelet representations of high-dimensional vectors. We present a lower-bounding technique and use it to develop an algorithm for computi...
IJCV
2006
13 years 5 months ago
2006
A new approach performing surface extraction from 3D images under user defined geometrical constraints is presented. The constraints are introduced through boundary curves given by...