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

Algorithm 2

Algorithm of our data hiding encoding technique for low motion sequences.

Algorithm: Embed a sample in low-motion sequences

Input: Data of the sample in bit-pairs according to (2).

Result: Embedded sample in a frame.

(1) for NewSample do

(2) curblock → current macroblock

(3) if PSKIP partition do

(4)   curblock = P16 × 16 partition type

(5)   switch Mapping do

(6)    case 00: Quarter-Pixel Search Position =

(7)    case 01: Quarter-Pixel Search Position =

(8)    case 10: Quarter-Pixel Search Position =

(9)    case 11: Quarter-Pixel Search Position =

(10)   end switch

(11)  end if → until complete all partitions of the current macroblock

(12) end for → until complete all samples