WikiVisually
The entire wiki reimagined as a visual magazine with video discovery · Watch your interests come alive
WikiVisually
The entire wiki reimagined as a visual magazine with video discovery · Watch your interests come alive
Nature The World Movies USA Top Art Fine & Rare History Ivy & Inquiry
Discrete cosine transform
Videos
A discrete cosine transform expresses a finite sequence of data points in terms of a sum of cosine functions oscillating at different frequencies. The DCT, first proposed by Nasir Ahmed in 1972, is a
The four basic stages of computing 3-D DCT-II using the VR DIF Algorithm.
The four basic stages of computing 3-D DCT-II using the VR DIF Algorithm.
The single butterfly stage of the VR DIF algorithm.
The single butterfly stage of the VR DIF algorithm.
Compression artifact
Videos
In computing, a compression artifact is a noticeable distortion of digital media caused by the application of lossy compression. Lossy data compression involves discarding some of the media's data so
Discrete cosine transform
…and 32 × 32 pixels. The DCT has a strong energy compaction property, capable of achieving high quality at high data compression ratios. However, blocky compression artifacts can appear when heavy DCT compression is applied. The DCT was first conceived by Nasir Ahmed while working at Kansas State University. The concept was…
An example of a "deep fried" image made from a photo of a Diet Pepsi can
An example of a "deep fried" image made from a photo of a Diet Pepsi can