Image Classification Based on Sparse Representation in the Quaternion Wavelet Domain.
Long H. NgoNikolay Metodiev SirakovMarie LuongEmmanuel ViennetThuong Le-TienPublished in: IEEE Access (2022)
Keyphrases
- sparse representation
- wavelet domain
- image classification
- wavelet coefficients
- denoising
- spatial domain
- multiscale
- wavelet transform
- multiresolution
- image representation
- dictionary learning
- sparse coding
- human visual system
- visual features
- fourier transform
- image denoising
- feature extraction
- bag of words
- compressive sensing
- subband
- image features
- image patches
- frequency domain
- high frequency
- machine learning
- visual words
- natural images
- image processing
- computer vision
- image quality
- motion estimation
- optical flow
- pairwise
- object recognition
- high quality
- face recognition
- fourier domain