Robust image hashing via colour vector angles and discrete wavelet transform.
Zhenjun TangYumin DaiXianquan ZhangLiyan HuangFan YangPublished in: IET Image Process. (2014)
Keyphrases
- discrete wavelet transform
- haar wavelet transform
- image watermarking
- multiresolution decomposition
- laplacian pyramid
- image data
- image features
- input image
- dual tree
- low frequency
- wavelet domain
- multiscale
- geometric distortions
- fusion method
- multiresolution
- fusion rules
- image retrieval
- image analysis
- integer wavelet transform
- region of interest
- wavelet coefficients
- subband
- low level
- jpeg compression
- feature vectors
- digital watermarking
- edge detection
- high resolution
- image segmentation
- watermarking technique
- shift invariant
- fused image
- source images
- dt cwt