Enhanced Efficient Image Dehazing for Onboard Satellite Imagery Processing

Satellite imagery is often composed of diverse terrains like forest, desert, snow and exhibits haze, fog, thin clouds which require dehazing in order to make them analysisready. Onboard processing of satellite imagery requires the algorithm's parameters to be fine-tuned depending on the type of terrain encountered. From the atmospheric light scattering model, the estimation of atmospheric light and transmission map is performed in single image dehazing method. This paper focuses on tuning an existing method the “Efficient Image Dehazing with Boundary Constraints and Contextual Regularization method for satellite imagery”. A new image quality assessment method is introduced to enable fine-tuning the exponent of the algorithm. With the onset of onboard processing requirements, parallel implementation and faster image processing methods are explored for small run-times.