Fig. 1. Defining the axes according to the rotating angle of the polarizer. The x and y axes represent 0° and 90°, respectively. θ is the included angle between the direction of the polarization and the x axis. The arrow represents the polarized direction of the air light.

Fig. 2. (a)–(c) are the images directly snapped by the black-and-white industrial camera, where the rotating angle of the polarizer is set to 0°, 45°, and 90°, respectively. (d) is the dehazed image using our algorithm without any additional image-processing algorithms. (e) and (f) are the histograms of (a) and (c), respectively.

Fig. 3. Dehazed image based on Schechner’s algorithm without any additional image-processing algorithm.

Fig. 4. (a)–(c) are the images directly snapped by the color industrial camera, where the rotating angle of the polarizer is set to 0°, 45°, and 90°, respectively. (d) is the dehazed image using our algorithm without any additional image-processing algorithm.

Fig. 5. (a)–(c) are the images directly snapped in light hazy weather, where the rotating angle of the polarizer is set to 0°, 45°, and 90°, respectively. (d) is the dehazed image using our algorithm without any image-processing algorithm.

Fig. 6. (a)–(c) are the images directly snapped in dense hazy weather, where the rotating angle of the polarizer is set to 0°, 45°, and 90°, respectively. (d) is the dehazed image using our algorithm without any image-processing algorithm.