We present algorithms for the type-IV discrete cosine transform (DCT-IV) and discrete sine transform (DSTIV), as well as for the modified discrete cosine transform (MDCT) and its inverse, that achieve a lower count of real multiplications and additions than previously published algorithms, without sacrificing numerical accuracy. Asymptotically, the operation count is reduced from 2N log2 N +O(N...

Face recognition is a computer vision application based on biometric information for automatic person identification or verification from image sequence video frame. In this context DCT the easy technique to determine significant parameters. Until now main object selection of coefficients obtain best recognition. Many techniques rely premasking windows discard high and low enhance performance. ...

In this paper, a high-accuracy and high-speed 2D 8x8 Discrete Cosine Transform (DCT) design is proposed. By using the parallel architecture, inherited from the design reported by S. Ramachandran et. al., re-designing and enhancing function of all component modules, the proposed design can transform each 8x8 block in 64 cycles and achieve a very high accuracy compared to other designs and standa...