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visibility measurement
johnson's criteria
12 janvier 2014

visibility measurement and Johnson criteria

(version française ICI ) Visibility measurement can be accomplished in several ways: - Very basic methods measure the attenuation of a light beam as a function of distance, in transmission ( through the mist , for example) or in reflection ( to test the...
Posté par NEXYAD à 17:15 - Commentaires […] - Permalien [#]
Tags: nexyad,  visibility,  visibility measurement,  visinex onboard,  Johnson's criteria,  Johnson Criteria,  angular frequency,  attenuation of a light beam,  exyar testing,  heuristic,  nexyad automotive,  ntransportation

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24 novembre 2013

measurement of road scenes visibility : distance of detection , of recognition , of identification

(version Française ICI) Measuring the road scenes visibility is a topic studied since the 60s and several approaches have been developed. Most measurements using a laser and a receiver, measure the attenuation of the light power transmission to study...
Posté par NEXYAD à 13:46 - Commentaires […] - Permalien [#]
Tags: visibility,  visiNex,  DropNex,  Johnson's criteria,  atmonspheric disturbance,  color,  contrast,  detecting objects,  human vision,  light level,  military work,  object size,  probability of detecting,  road scene,  sensitivity of the eye,  true visibility measurement,  visibility mea

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visibility measurement
  • visibility measurement is important for Automotive industry : wiping, washing, lighting, demisting and defrosting are made ​​to restore visibility. -for Aerospace: aircrafts need visibility during landing and taxi mode You must be able to measure it.
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