Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD AND IMAGE CAPTURING DEVICE FOR DETECTING FOG IN ONE SCENE
Document Type and Number:
Japanese Patent JP2019078755
Kind Code:
A
Abstract:
To provide a method and an image capturing device for automatically detecting whether a captured scene includes fog.SOLUTION: An image capturing device captures a first image of a scene without illuminating the scene with IR radiation (A010). The image capturing device determines a first value of a measured value relating to contrast for the first image (A020). When the first value indicates that first contrast of the first image is less than a first threshold value, the image capturing device captures a second image of the scene while illuminating the scene with IR radiation (A030). The image capturing device determines a second value of the measured value relating to contrast for the second image (A040). When a difference between the first contrast and second contrast, indicated by the second value, is greater than or equal to a second threshold value, the image capturing device determines that there is fog in the scene (A050).SELECTED DRAWING: Figure 3

Inventors:
カン シュウ
ペール ウルヘルムソン
Application Number:
JP2018198810A
Publication Date:
May 23, 2019
Filing Date:
October 22, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
アクシス アーベー
International Classes:
G01N21/53; G01N21/17; G03B11/00; H04N5/225; H04N5/232
Attorney, Agent or Firm:
浜田 治雄