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VLSISP
1998

Image Compression Using KLT, Wavelets and an Adaptive Mixture of Principal Components Model

13 years 9 months ago
Image Compression Using KLT, Wavelets and an Adaptive Mixture of Principal Components Model
In this paper, we present preliminary results comparing the nature of the errors introduced by the mixture of principal components (MPC) model with a wavelet transform and the Karhunen Lo`eve transform (KLT) for the lossy compression of brain magnetic resonance (MR) images. MPC, wavelets and KLT were applied to image blocks in a block transform coding scheme. The MPC model partitions the space of image blocks into a set of disjoint classes and computes a separate KLT for each class. In our experiments, though both the wavelet transform and KLT obtained a higher peak signal to noise ratio (PSNR) than MPC, according to radiologists, MPC preserved the texture and boundaries of gray and white matter better than the wavelet transform or KLT.
Nanda Kambhatla, Simon Haykin, Robert D. Dony
Added 23 Dec 2010
Updated 23 Dec 2010
Type Journal
Year 1998
Where VLSISP
Authors Nanda Kambhatla, Simon Haykin, Robert D. Dony
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