Historical Background and Introduction to the Special Issue on Extremely Low Frequency (ELF) Communications.
James R. WaitPublished in: IEEE Trans. Commun. (1974)
Keyphrases
- low frequency
- high frequency
- frequency domain
- wavelet transform
- wavelet analysis
- discrete wavelet transform
- subband
- frequency band
- wavelet coefficients
- spatial frequency
- electromagnetic fields
- low pass
- foreground objects
- high resolution
- original images
- high frequency components
- dct domain
- image analysis
- multiscale
- contourlet transform
- fusion rules
- image denoising
- face recognition