Next, the three YCbCr components are treated independently to a discrete cosine transform and quantization. This transforms each 8×8 pixel block into 64 discrete spatial frequencies.

German researchers have found a way to identify deep fake images by converting them to the frequency domain using the discrete cosine transform. The team, from the Ruhr-Universität Bochum and Casa ...

This study presents the investigation of the Discrete Cosine Transform (DCT) and a deep convolutional neural network implementation on COVID-19 research using x-ray images. Two different datasets ...

The new method for an online handwritten signature verification based on discrete fractional cosine transformation (DFrCT) for feature extraction is proposed. Various characteristics of the ...

The discrete Fourier-cosine transform (cos-DFT), the discrete Fourier-sine transform (sin-DFT) and the discrete cosine transform (DCT) are closely related to the discrete Fourier transform (DFT) of ...