Implementing Fast DCTs

By Tim Kientzle

Dr. Dobb's Journal March 1999

Figure 7: Arai, Agui, and Nakajima DCT algorithm (from JPEG: Still Image Data Compression Standard). Boxes represent multiplication. a₁=0.707, a₂=0.541, a₃=0.707, a₄=1.307, a₅=0.383.

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