A Robust Digital Watermarking with Mixed Transform Technique for Digital Image

In this paper a frequency domain method is proposed for preprocessing the EEG data using Discrete cosine transform and eliminated unwanted frequencies to remove noise and

The Discrete Cosine Transform (DCT) has been widely used in the field of image compression because of its excellent energy compaction properties. It is an orthogonal

In this paper we are using sparse representation app roach based on discrete wavelet transform (DWT) to achieve more robustness to variation in light ing, directions

Recently obtained image is further processed applying discrete wavelet transform on every row and results are presented on the Fig.8, showing estimated discrete wavelet

He proposed separable 2-D discrete Hartley transform (SDHT) and its Distributed Arithmetic (DA) based hardware architecture as an alternate to DCT in transform based

This paper proposes a method to embed data in Discrete Wavelet Transform coefficients using a mapping function based on Genetic Algorithm in 4x4 blocks on the cover image and,

When the speech signal corrupted by noise is processed using different transforms like the Discrete Fourier Transform, Discrete Cosine Transform and the Discrete Sine Transform ,

The JPEG process is a widely used form of lossy image compression that centers on the Discrete Cosine Transform.. DCT and Fourier transforms convert images from spatial-domain to