Zheyan Jin

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(1) Wipe the protective glass with isopropylamine (IPA) and a cleaning cloth. (2) Find a suitable shooting position where a light source in the scene will produce some flare, and hold the camera steady. (3) Take pictures of the ground truth. (4) Spread oil and dust onto the protective glass to degrade the pupil plane. (5) Take pictures of the flare caused by the degraded pupil plane.

3.3. Haze Concentration and Haze Parameters Existing image dehazing datasets usually only include two classes: hazy and non-hazy. However, in reality, there are various levels of fog, including thin, medium, and dense fog, and different images may have different levels of fog density. The intensity of real-world haze is a continuous value rather than a discrete one.