2DPCA-based techniques in DCT domain for face recognition.
Messaoud BengherabiLamia MezaiFarid HariziAbderrazak GuessoumMohamed CherietPublished in: Int. J. Intell. Syst. Technol. Appl. (2009)
Keyphrases
- dct domain
- face recognition
- post processing
- spatial domain
- transform domain
- dct coefficients
- human visual system
- compressed domain
- face images
- recognition rate
- digital video
- discrete cosine transform
- compressed images
- principal component analysis
- quantization step
- feature extraction
- low frequency
- low pass filtering
- reference frame
- sparse representation
- video transcoding
- frequency domain
- facial expressions
- pattern recognition
- wavelet domain
- image quality
- image retrieval