Stress Classification Using Photoplethysmogram-Based Spatial and Frequency Domain Images.
Sami ElzeinyMarwa K. QaraqePublished in: Sensors (2020)
Keyphrases
- frequency domain
- cross correlation
- spatial domain
- image classification
- fourier transform
- log polar
- feature extraction
- power spectrum
- fourier domain
- power spectra
- image data
- bandpass
- fourier analysis
- spatial information
- directional filtering
- spatial correlation
- spectral domain
- spectral signatures
- phase correlation
- input image
- low frequency
- discrete fourier transform
- feature selection
- feature vectors
- image registration
- image features
- satellite images
- object recognition
- image analysis
- low pass
- subpixel accuracy
- hyperspectral images
- affine invariance
- subband
- multiresolution
- hyperspectral data
- denoising
- natural images
- gabor filters