Directional discrete cosine transforms arising from discrete cosine and sine transforms for directional block-wise image representation.
Tomohiro IchitaSeisuke KyochiTaizo SuzukiYuichi TanakaPublished in: ICASSP (2017)
Keyphrases
- image representation
- block wise
- discrete cosine
- discrete fourier transform
- multiscale
- image classification
- object recognition
- transform domain
- quadtree
- discrete cosine transforms
- image features
- image retrieval
- frequency domain
- sparse coding
- natural images
- feature space
- sparse representation
- fourier transform
- image quality
- signal processing
- image blocks
- feature selection