Biomedical Engineering Reference
In-Depth Information
many Web resources including books, software, demos, research groups,
and tutorials. Important future events are also listed.
2. www.multiresolution.com: includes useful documentation about multires-
olution image and data analysis. Its also proposes a software package and
demos for a wide range of applications.
Questions
1.
What is the uncertainty principle in spatial-frequency analysis? How does
the “uncertainty principle” affect the selection of signal representation?
2.
How “redundant” is an over-complete wavelet expansion? Use an example
of a three-dimensional signal, with a five level decomposition using the
filter bank implementation shown in Figure 6.5.
3.
What is the difference between a Gabor transform and a windowed Fourier
transform using a Gaussian window?
4.
What is the difference between a wavelet transform and a wavelet packet
transform?
5.
What is the advantage of temporal analysis in image denoising?
6.
Why is a true 3D denoising needed for PET/SPECT images?
7.
Describe the three major components for accomplishing multiscale texture
segmentation.
8.
Between first and second derivatives, which one is preferred for multiscale
edge detection?
9.
What are the two most useful aspects of wavelet transforms in image reg-
istration problems?
