도움말 센터 도움말 센터

압축

웨이블릿 공간 방향 트리, SPIHT, EZW, WDR, AWDR, 매칭 추적

웨이블릿 분석 및 매칭 추적 방법을 사용하여 신호 및 영상을 압축합니다.

함수

압축

`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

매칭 추적

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

도움말 항목

압축

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.

매칭 추적

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.