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Image transformation-discrete cosine transformation,Harr transformation
written 6.7 years ago by gravatar for nandinijella15 nandinijella15 • 620 modified 3.8 years ago by gravatar for pedsangini276 pedsangini276 • 4.8k
image processing
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written 6.7 years ago by gravatar for nandinijella15 nandinijella15 • 620

Discrete Cosine Transform

A discrete cosine transform (DCT) expresses a finite sequence of data points in terms of a sum of cosine functions oscillating at different frequencies. DCTs are important to numerous applications in science and engineering, from lossy compression of audio (e.g. MP3) and images (e.g. JPEG) (where small …

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