SonicGest: Ultrasonic Gesture Recognition System Combined with GAN on Smartphones

Algorithm 1

Start and end point detection.

(1) Input: T1, T2, T3, fame:

(2) Output: List of start and end points.

(3) Define sum () to calculate the sum.

  Define power () to calculate fame power

(4) startCount0; endCount0; flagFalse;

(5) for i = 1: n do

(6)  if flag == False then

(7)   if sum (power (v_i) > T2) >= T1 then

(8)    Add the first possible start frame

(9)    startCountstartCount+1

(10)   else

(11)    startCount0

(12)   end if

(13)   if startCount >= T3 then

(14)    flagTrue

(15)   end if

(16)  else if flag== True then

(17)   if sum (power (v_i) > T2) < T1 then

(18)    Add the first possible end frame

(19)    endCountendCount+1

(20)   else

(21)    endCount0

(22)   end if

(23)   if endCount >= T3 then

(24)    Add the first possible end frame and start frame to the start-end list

(25)   end if

(26)  end if

(27) end for