Research Article

Optimized Architecture Using a Novel Subexpression Elimination on Loeffler Algorithm for DCT-Based Image Compression

Table 2

8-point DCT fixed coefficient representation.

Real valueDecimalNatural binaryPartial productsCSDPartial products

106011010104+0−0+0+04
710100011140+00+00−3
126011111106+00000−02
2500011001300+0−00+3
490011000130+0−000+3
118011101105+000−0−03
181101101015+0−0−0+0+5

Total partial products 30 23