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JPEG DCT, Discrete Cosine Transform (JPEG Pt2)- Computerphile

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Further reading 1

What becomes visible when you change representation? →An average, a spectrum and a geometric diagram each foreground a different structure. Before asking which view is intuitive, ask which comparison you need it to support.This video helps answer · Why can a sharply rendered digit be wrong?

Caption notes

JPEG writes an eight-by-eight block as a weighted sum of cosine patterns. Dividing the coefficients by quantization values and rounding them explains exactly where details become unrecoverable.

Archived captions (transcription method unspecified) ↗
Original passages · 2
representing the contribution of each of these individual blocks to the whole.
JPEG DCT, Discrete Cosine Transform (JPEG Pt2)- Computerphile · ▶ 4:51–4:57
round to the nearest integer.
JPEG DCT, Discrete Cosine Transform (JPEG Pt2)- Computerphile · ▶ 9:02–9:04

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