Parallel Digital Watermarking Process on Ultrasound Medical Images in Multicores Environment

Table 9

A table of comparison on elapsed time of watermarking authentication process on different sets of tampered frames in watermarked ultrasound medical images.

Tampered watermarked US images	Elapsed time for watermarking authentication process
	Seq	D	R	Par	D	R
Tampered_0_frames	18.2	Yes	Yes	23.1	Yes	Yes
Tampered_3_frames	56.9	Yes	Yes	35.3	Yes	Yes
Tampered_6_frames	97.0	Yes	Yes	39.1	Yes	Yes
Tampered_9_frames	139.9	Yes	Yes	53.8	Yes	Yes
Tampered_12_frames	241.6	Yes	Yes	58.2	Yes	Yes
Tampered_15_frames	259.1	Yes	Yes	71.0	Yes	Yes

Seq: sequential version (seconds).
Par: parallel version (seconds).
D: able to detect and display the tampered frame number?
R: able to recover to its original form after authentication process?