A fourth-order bandpass Δ-Σ modulator using second-order bandpass noise-shaping dynamic element matching.
Takeshi UenoAkira YasudaTakafumi YamajiTetsuro ItakuraPublished in: IEEE J. Solid State Circuits (2002)
Keyphrases
- bandpass
- fourth order
- noise shaping
- delta sigma modulators
- subband
- frequency domain
- delta sigma
- noise removal
- high order
- error diffusion
- textured images
- image coding
- partial differential equations
- bit rate
- wavelet transform
- filter bank
- high frequency
- image compression
- low frequency
- multiresolution
- discrete wavelet transform
- spatial domain
- denoising
- image enhancement
- wavelet decomposition
- zero crossing
- image denoising
- feature space
- texture features
- markov random field
- feature vectors