Improved FMIDCT

• Basis function symmetry

• 4x4 accumulator arrays instead of 8x8

• Reduced computation, fit in registers

H

V

D

Q

-H

V

-D

Q

H

-V

-D

Q

-H

-V

D

Q

4

4

A

B

C

D

K1,1: Type D Symmetry

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