Single Image Noise Level Estimation Using Dark Channel Prior

Date

2019-09-22

Author

Yeşilyurt, Aziz Berkay
Erol, Aybüke
Kamışlı, Fatih
Alatan, Abdullah Aydın

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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Noise level is required as an input parameter in various image processing applications. In this work, we use the dark channel prior (DCP) to estimate the noise level of an image degraded by additive white Gaussian noise. We develop an approximate model of the probability density function of the dark channel of the noisy image. Using this model, the noise level is determined with the maximum likelihood estimation method from the dark channel intensity values of the noisy image. The results show that our method is faster than the state-of-the-art methods by about two orders of magnitude while providing slightly inferior estimation performance.

Subject Keywords

Noise estimation, Dark channel prior, Minimum of Gaussian variables, Maximum likelihood estimation

URI

https://hdl.handle.net/11511/40980

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Department of Electrical and Electronics Engineering, Conference / Seminar