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 value | Decimal | Natural binary | Partial products | CSD | Partial products |
| | 106 | 01101010 | 4 | +0−0+0+0 | 4 | | 71 | 01000111 | 4 | 0+00+00− | 3 | | 126 | 01111110 | 6 | +00000−0 | 2 | | 25 | 00011001 | 3 | 00+0−00+ | 3 | | 49 | 00110001 | 3 | 0+0−000+ | 3 | | 118 | 01110110 | 5 | +000−0−0 | 3 | | 181 | 10110101 | 5 | +0−0−0+0+ | 5 |
| Total partial products |
30 |
23 |
|
|