Direct digital synthesis (DDS) is a method to generate waveforms directly in the digital domain. In this method,the target waveforms are the sine and cosine ones. The Co-ordinate Rotational Digital Computer (CORDIC) algorithm configured in Rotation Mode (RM) can behave as a quadrature phase-to-amplitude converter that directly generates sine and cosine waveforms. The main advantage of using COR...

Computational techniques derived from digital image processing are playing a significant role in the security and digital copyrights of multimedia and visual arts. This research presents discrete M-band wavelet transform (DMWT) and cosine transform (DCT) based watermarking algorithm by incorporating the randomization and principal component analysis (PCA). The proposed algorithm is expected to ...

Most search engines return a lot of unwanted information. A more thorough filtering process can be performed on this information to sort out the relevant documents. A new method called Frequency Domain Scoring (FDS), which is based on the Fourier Transform is proposed. FDS performs the filtering by examining the locality of the keywords throughout the documents. This is examined and compared to...