Non-contact sub-nanometer displacement sensing based on optical digital coherent detection using frequency-domain filters.
Jingwen WangJiang HongXiaoyan WangLianhui ZhengWen RenHuixian YanPublished in: IEICE Electron. Express (2024)
Keyphrases
- frequency domain
- frequency analysis
- bandpass
- spatial domain
- fourier transform
- frequency response
- impulse response
- directional filtering
- fourier domain
- cross correlation
- subband
- low pass
- power spectrum
- discrete fourier transform
- feature extraction
- filter bank
- denoising
- fourier analysis
- high pass
- feature vectors
- frequency spectrum
- frequency domain analysis
- power spectra
- image sequences
- signal processing
- fast fourier transform
- optical flow