FOG MONITORING SYSTEM

PROBLEM TO BE SOLVED: To detect the generation of fog with high accuracy regardless of weather and surrounding environment. SOLUTION: The inside of a photographing object region 20 is photographed with a TV camera 10 and image signals concerning photographing objects in the photographing object regi...

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Bibliographic Details
Main Authors IDO KAZUNARI, KITAMURA TADAAKI, NAKAMURA KENICHI, SATO YOSHIYUKI
Format Patent
LanguageEnglish
Published 22.12.1997
Edition6
Subjects
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE
ALARM SYSTEMS
CALCULATING
COMPUTING
CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
COUNTING
FIXED CONSTRUCTIONS
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
METEOROLOGY
ORDER TELEGRAPHS
PHYSICS
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
TESTING
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Summary:PROBLEM TO BE SOLVED: To detect the generation of fog with high accuracy regardless of weather and surrounding environment. SOLUTION: The inside of a photographing object region 20 is photographed with a TV camera 10 and image signals concerning photographing objects in the photographing object region 20 are produced, which are input in an image processor 12. In the image processor 12, an image concerning a plurality of regions in the vicinity of white lines 22 is produced as a shade pattern image and by comparing the shade pattern image in each region with a registered pattern image denoting a reference value in the case of no fog generation, a correlation value of the two is obtained. Then, with a fog detection part 14, the correlation value is made an input neuron value and transmissivity is obtained as output neuron value. When the transmissivity is lower or equal to a set value, an alarm is displayed on a screen of an indication part 16 to show the generation of fog.
Bibliography:Application Number: JP19960149073