A Data Hiding Technique to Synchronously Embed Physiological Signals in H.264/AVC Encoded Video for Medicine Healthcare

Table 1

Qualitative metrics and statistics of the data hiding (DH) schemes reviewed.

Reference	DH schemes	DH capacity	Max. PSN distortion	Max. bit-rate distortion
[3]	Forcing block-type partitions	2 bits per MB (interframes)	−1.4 dB (40 kbps)	7000 bps
[7]	Grouping block-type partitions	1 bit per MB (inter/intraframes)	−0.09 dB	4.65%
[8]	Parity of trailing ones CAVLC	1 bit per MB (intraframes)	−2.57 dB	0.039%
[9]	Quarter-pixel search positions	1–4 bits per MB (interframes)	−0.03 db	1.31%
[10]	Last nonzero coefficient parity	1 bit per MB (interframes)	Approx. −0.01 dB	1200 bps
[11]	Motion vectors and mode sel.	1 bit per frame (interframes)	0.03 dB	0.98%