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Indian Institute of Technology (IIT) Roorkee 
A single stage multi-spectral image and video dehazing system and its method thereof 
B.K.Kaushik and Rahul Kumar 
Indian Institute of Technology (IIT) Roorkee 
Application type:
Applied - 2019-06-19 
Application Number:
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Indian Institute of Technology (IIT) Roorkee 
Present invention provides visible and near infrared (NIR) image fusion based system and method for image and video dehazing/defogging. It restores hazy color images in challenging conditions, wherein the scene recovery is almost impossible by using conventional single spectrum dehazing methods due to negligibly small object reflectance. The present invention contains airlight and transmission map estimator that estimates atmospheric light and initial transmission map using the input data, a weight generator that produces transmission map fusion weights, a transmission fusion unit that fuses high frequency information of the initial transmission map and the input NIR data, a restoration unit that recovers haze free color image and video. This invention requires less execution time yet produces high perceptual quality haze free images. 

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