Distributed Image Compression Architecture over Wireless Multimedia Sensor Networks

Algorithm 4

Relay  node  selection.

while  Compressed  image  has  not  arrived  at  the  base  station

 if  Node  is  CH  then

if  CH  has  a  neighboring  CH  then

Broadcast  Relay-Msg  (ID)  

Receive  Relay-Reply-Msg  (ID,  routing_level,  energy)  for  neighboring  CHs

Select  a  group  of  neighboring  CHs  that  have  lowest  routing_level

Fuzzy_cost    empty

For  each  Relay-Reply-Msg

Fuzzy_cost[]  calculate  Fuzzy  (Remaining_energy,  RSSI)

end  for

Next_CH    Select  the  CH  that  has  the  highest  fuzzy  cost

Source  CH  sends  the  compressed  image  to  Next_CHs.

Else

Source  CH  sends  the  compressed  image  directly  to  the  base  station.

end  if

if  Node  receives  Relay-Msg  then

CH  replies  to  the  source  CH  with  Relay-Reply-Msg  (ID,  routing_level,  energy).

end  if

end  if

end  while