Table 6 Power reduction in the proposed DCT for various number of bits (N) ignored for row comparison
From: Implementation of computation-reduced DCT using a novel method
Image | Power consumption | N = 0 | N = 1 | N = 2 | N = 3 | N = 4 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Comparison unit power consumption (mW) | Power consumed by DCT alone (mW) | Proposed DCT power consumption (mW) | Power variations in % | Proposed DCT power consumption (mW) | Power variations in % | Proposed DCT power consumption (mW) | Power variations in % | Proposed DCT power consumption (mW) | Power variations in % | Proposed DCT power consumption (mW) | Power variations in % | |
Lena | 1.26 | 8.02 | 9.01 | −12.4 | 8.04 | −0.4 | 6.83 | 14.8 | 5.45 | 32.1 | 4.01 | 50.0 |
Camera | 1.26 | 8.02 | 8.48 | −5.8 | 7.44 | 7.1 | 6.77 | 15.5 | 6.13 | 23.5 | 5.28 | 34.1 |
Rice | 1.26 | 8.02 | 9.24 | −15.3 | 8.92 | −11.3 | 8 | 0.2 | 6.56 | 18.2 | 5.06 | 36.9 |
Mandrill | 1.26 | 8.02 | 9.25 | −15.4 | 9.15 | −14.2 | 8.79 | −9.6 | 7.93 | 1.1 | 6.12 | 23.6 |
Pirate | 1.26 | 8.02 | 9.21 | −14.9 | 9.05 | −12.9 | 8.59 | −7.2 | 7.65 | 4.5 | 6.05 | 24.5 |
Peppers | 1.26 | 8.02 | 9.26 | −15.6 | 9.08 | −13.3 | 8.33 | −3.9 | 6.52 | 18.6 | 4.65 | 42.0 |