Face recognition using DWT thresholding based feature extraction with laplacian-gradient masking as a pre-processing technique.
Naveen N. MurthyR. RaghunandanaK. ManikantanS. RamachandranPublished in: CUBE (2012)
Keyphrases
- feature extraction
- preprocessing
- edge detection
- wavelet transform
- face images
- post processing
- image processing
- discrete wavelet transform
- zero crossing
- human faces
- face recognition
- preprocessing step
- frequency domain
- feature vectors
- multiresolution
- principal component analysis
- edge detector
- multiscale
- image enhancement
- discriminant analysis
- image classification
- dimensionality reduction
- subband
- image watermarking
- feature space
- facial images
- human visual system
- low frequency
- digital watermarking
- facial expression recognition
- gray level
- feature representation
- dimension reduction
- facial features
- linear discriminant analysis
- wavelet coefficients
- human identification
- image segmentation
- gradient information
- high frequency
- lifting scheme
- gabor wavelets
- human recognition
- biometric systems
- palmprint
- computer vision
- denoising
- facial expressions
- digital images
- feature selection