looking through inside of the guinness cascades by using near infrared ray camera

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Looking through inside of the Guinness cascades by using Near Infrared Ray Cam Jun Hirabayashi [email protected] http://www.hirax.net Twitter:@hirax

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Looking  throughinside  of  the  Guinness  cascadesby  usingNear  Infrared  Ray  Cam

Jun  [email protected] http://www.hirax.netTwitter:@hirax

This  is  me!

▪ Hobby-­‐Scientist  as  my  Life  work– Daily  log  :  http://www.hirax.net– Field  of  the  my  works;  ▪ Science  behind  our  daily  life▪ Science  for  Adults▪ To  Explore  various  invisible  world

▪ Imaging-­‐science  for  Money– If  you  have  any  small  problem  and  much  plenty  of  money,  then  you’d  better  to  call  me!

Guinness  Beer  cascades  invites  us  into  here!▪ The  phenomena  fascinates  all  of  us.  

▪ Actually,  I  always  drink  Guinness  beer  when  I’ve  been  studying  OpenFOAMwith  our  small  study  group  (The  leader:  Masami  Kadonaga)

Let’s  learn  “Electromagnetic  spectrum”

▪ Wavelength  around  one  micro  meters,  and  frequency  30  Tera  Hertz

My  Nude  Picture  taken  with  NIR  Camera

▪ We  can  see  very  different  world  from  normal  visible  light  world!

Near  Infrared  Ray  Images

▪ We  can  see  very  different  world  from  normal  visible  light  world!

How  drink  materials  look  like  with  NIR-­‐eyes?

▪ Many  dark/black  drinks  change  their  looks!      

(into  “Transparent”)

Ok.  We  can  see  inside  the  Guinness  Cascades!

▪ I  shot  Guinness  Cascades  every  Sunday  morning!

(using  NIR  camera  and  sun  light)

When  sun  rise,  we  can  do  it!

▪ koew

Ok.  We  can  see  inside  the  Guinness  Cascades!▪ I  shot  Guinness  Cascades  every  Sunday  morning!

(using  NIR  camera  and  sun  light)

▪ これ

PIV  (Particle  Image  Velocimetry)

▪ To  estimate  velocity  distribution  of  nitrogen  bubble  motion  by  using  Particle  Image  Velocimetry  (PIV)

▪ “Velocity  of  image  patterns”

▪ With  ImageJ  PIV  plugin

×mmくらい

PIV  (Particle  Image  Velocimetry)  result

Vertical  velocity  (White:Up)

Horizontal  velocity  (White:Going outside)

Field  of  view(Yellow  rectangle)

What  I  did,  today

Real  Situation Measurement

Simulation

Understandings

Modification

Future  works

▪ Stereo  PIV  would  be  interesting  to  construct  3D  result

▪ 3D  VR  flow  viewing  with  HMD  devices

▪ Estimation  /  separation  bubble  mouton  and  liquid  motion