
computer vision and image processing applications, such as image segmenta-
tion, object recognition, compression, and noise reduction. The concept of
multiresolution also provides a solid mathematical framework for forming
interpretations of wavelet bases.
7.3.1 Multiresolution and Scaling
Function
In a multiresolution analysis, a signal f (x) is decomposed into an ‘‘approximation’’
and ‘‘residual details’’ at a given resolution. The approximation is further decom-
posed into another approximation and residual details at a smaller resolution
[1] (see Fig. 7.3). This process is iterated toward successively finer resolutions.
The vector space that contains ...