Related Concepts
Definition
Dehazing is a process to visually improve degraded visibility caused by atmospheric conditions where the horizontal visibility on the ground level is greater than 1 km. Defogging is a similar process yet focusing on fog, which, unlike haze, is a cloud of water droplets near ground level reducing the horizontal visibility to less than 1 km. Both dehazing and defogging are part of algorithms to enhance visibility in bad weather due to light being scattered and absorbed by atmospheric particles.
Background
Poor visibility in outdoor scenes generates significant problems for many applications of computer vision. Most automatic systems for surveillance, intelligent vehicles, object recognition, etc., assume the input images have clear visibility. Unfortunately, this assumption does not always hold, particularly in bad weather. Therefore, improving the degraded visibility is practically important.
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Tan, R.T. (2014). Dehazing and Defogging. In: Ikeuchi, K. (eds) Computer Vision. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-31439-6_553
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DOI: https://doi.org/10.1007/978-0-387-31439-6_553
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