Instant Dehazing of Images using Polarization

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Instant Dehazing of Imagesusing Polarization

• Yoav Schechner,
• Srinivasa Narasimhan,
• Shree Nayar
• Department of Computer Science
• Columbia University

Sponsors DARPA HID, Morin Foundation, NSF
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Imaging through Haze
Instant Dehazing Yoav Schechner, Srinivasa
Narasimhan, Shree Nayar
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Imaging through Haze
Instant Dehazing Yoav Schechner, Srinivasa
Narasimhan, Shree Nayar
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Polarization and Haze
Instant Dehazing Yoav Schechner, Srinivasa
Narasimhan, Shree Nayar
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still, there is a dominant polarization
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Experiment
Best polarized image
Instant Dehazing Yoav Schechner, Srinivasa
Narasimhan, Shree Nayar
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Experiment
Worst polarized image
Instant Dehazing Yoav Schechner, Srinivasa
Narasimhan, Shree Nayar
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Polarization measurement
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Model
I
A
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Model
camera
2 input images
I
A
transmission
airlight
_
polarization degree
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Dehazing Experiment
Instant Dehazing Yoav Schechner, Srinivasa
Narasimhan, Shree Nayar
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Dehazing Experiment
Instant Dehazing Yoav Schechner, Srinivasa
Narasimhan, Shree Nayar
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Range map
depth
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Dehazing Experiment
Best polarized image
Instant Dehazing Yoav Schechner, Srinivasa
Narasimhan, Shree Nayar
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Dehazing Experiment
Instant Dehazing Yoav Schechner, Srinivasa
Narasimhan, Shree Nayar
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Range map
Instant Dehazing Yoav Schechner, Srinivasa
Narasimhan, Shree Nayar
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Conclusion
Instant Dehazing Yoav Schechner, Srinivasa
Narasimhan, Shree Nayar