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Compressione

Albero di orientamento spaziale wavelet, SPIHT, EZW, WDR, AWDR, matching pursuit

Comprimere segnali e immagini utilizzando l'analisi wavelet e i metodi di matching pursuit.

Funzioni

Compressione

`wcompress`	True compression of images using wavelets
`wdencmp`	Denoising or compression
`wpdencmp`	Denoising or compression using wavelet packets
`measerr`	Quality metrics of signal or image approximation

Matching pursuit

`sensingDictionary`	Sensing dictionary for sparse signal recovery (Da R2022a)
`matchingPursuit`	Recover sparse signal using matching pursuit algorithm (Da R2022a)
`basisPursuit`	Recover sparse signal using the basis pursuit algorithm (Da R2022a)

Argomenti

Compressione

Wavelet Data Compression
Learn how to obtain sparse representation of a signal using wavelets.
Wavelet Compression for Images
Learn about quantization for true compression of images and about different compression methods.
Data Compression using 2-D Wavelet Analysis
The purpose of this example is to show how to compress an image using two-dimensional wavelet analysis.

Matching pursuit

Matching Pursuit
Create sensing dictionaries and perform matching pursuit on 1-D signals.
Matching Pursuit Algorithms
Learn about basic, orthogonal, and weak orthogonal matching pursuit algorithms.