218 search results - page 31 / 44 » Directional Discrete Cosine Transforms for Image Coding |
TIP
1998
13 years 6 months ago
1998
—We propose novel discrete cosine transform (DCT) pseudophase techniques to estimate shift/delay between two onedimensional (1-D) signals directly from their DCT coefficients by...
TIT
1998
13 years 6 months ago
1998
In this article we review some recent interactions between harmonic analysis and data compression. The story goes back of course to Shannon’s R(D) theory in the case of Gaussian...
ICASSP
2010
IEEE
13 years 7 months ago
2010
IEEE
The widespread availability of photo editing software has made it easy to create visually convincing digital image forgeries. To address this problem, there has been much recent w...
ICPR
2010
IEEE
14 years 11 days ago
2010
IEEE
We consider a model of a 3D image obtained by discretizing it into a multiresolution tetrahedral mesh known as a hierarchy of diamonds. This model enables us to extract crack-free...
ICIP
2003
IEEE
14 years 8 months ago
2003
IEEE
In this paper, we propose a 3D geometry compression technique for densely sampled surface meshes. Based on a 3D multiresolution analysis (performed by a 3D Discrete Wavelet Transf...