The project aims to implement the Discrete Cosine Transform Type-II, and compare its time complexity against a library's implementation (which supposingly uses a Fast Fourier Transform behind the ...

Official code for CAT-Net: Compression Artifact Tracing Network. Image manipulation detection and localization. jpeg forensics image-forensics image-splicing-detection discrete-cosine-transform ...

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.

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 ...