Inspec keywords: matrix algebra; cryptography; discrete wavelet transforms; image coding; interpolation; image watermarking; low-pass filters; image colour analysis; Gaussian processes

Other keywords: watermarking embedding; Gaussian low-pass filter; colour vector angle; nonoverlapping blocks; feature matrix; DWT; bicubic interpolation; JPEG compression; LL subband; receiver operating characteristic curve; discrete wavelet transform; robust image hashing

Subjects: Integral transforms; Interpolation and function approximation (numerical analysis); Integral transforms; Algebra; Other topics in statistics; Algebra; Other topics in statistics; Interpolation and function approximation (numerical analysis); Image and video coding; Filtering methods in signal processing; Cryptography; Computer vision and image processing techniques