A Python implementation of JPEG image compression using the Discrete Cosine Transform (DCT) and Run-Length Encoding (RLE) to reduce image sizes while maintaining quality.

Explores both the relationships between discrete cosine transform (DCT) coefficients as well as the variation in DCT coefficients across popular video codecs with a focus on improving and optimizing ...

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 ...

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.

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 discrete cosine transform is a valuable tool in analysis of data on undirected rectangular grids, like images. In this paper it is shown how one can define an analogue of the discrete cosine ...

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 ...