Parallel Digital Watermarking Process on Ultrasound Medical Images in Multicores Environment

Table 8

The overall elapsed time comparison between sequential and parallel version of watermarking process (embedding plus authentication).

(a) Overall elapsed time taken in watermarking process on Ultrasound_Sample_1.dcm

Watermarking process	Sequential	Parallel	Speedup
Embedding	738.70	38.30	19.29
Authentication	597.10	164.20	3.64
Overall time taken	1335.80	202.50	6.60

(b) Overall elapsed time taken in watermarking process on Ultrasound_Sample_2.dcm

Watermarking process	Sequential	Parallel	Speedup
Embedding	336.40	23.80	14.13
Authentication	270.00	92.60	2.92
Overall time taken	606.40	116.40	5.21

(c) Overall elapsed time taken in watermarking process on Ultrasound_Sample_3.dcm

Watermarking process	Sequential	Parallel	Speedup
Embedding	332.60	22.80	14.59
Authentication	241.2	73.3	3.29
Overall time taken	573.8	96.1	5.97