Figure 8
From: Inverse polynomial reconstruction method in DCT domain
Comparison of different de-noising methods for a piecewise polynomial signal (blue: original signal, red: reconstructed signal). (a) Original signal. (b) Noisy signal with SNR =16.91 dB. (c) Cycle-spinning de-noising. (d) Wavelet footprints de-noising. (e) Direct method de-noising with oracle. (f) IPRM de-noising