Blur Removal Via Blurred-Noisy Image Pair

Complex blur such as the mixup of space-variant and space-invariant blur, which is hard to model mathematically, widely exists in real images. In this article, we propose a novel image deblurring method that does not need to estimate blur kernels. We utilize a pair of images that can be easily acqui...

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Vydáno v:IEEE transactions on image processing Ročník 30; s. 345 - 359
Hlavní autoři: Gu, Chunzhi, Lu, Xuequan, He, Ying, Zhang, Chao
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York IEEE 2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
Algorithms
Cameras
Estimation
Gaussian mixture model
Image acquisition
Image deblurring
Image restoration
Kernel
Noise measurement
optical flow
Optical flow (image analysis)
Optical imaging
Parameter estimation
Probabilistic models
Robustness (mathematics)
Slicing
ISSN:1057-7149, 1941-0042, 1941-0042
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Shrnutí:Complex blur such as the mixup of space-variant and space-invariant blur, which is hard to model mathematically, widely exists in real images. In this article, we propose a novel image deblurring method that does not need to estimate blur kernels. We utilize a pair of images that can be easily acquired in low-light situations: (1) a blurred image taken with low shutter speed and low ISO noise; and (2) a noisy image captured with high shutter speed and high ISO noise. Slicing the blurred image into patches, we extend the Gaussian mixture model (GMM) to model the underlying intensity distribution of each patch using the corresponding patches in the noisy image. We compute patch correspondences by analyzing the optical flow between the two images. The Expectation Maximization (EM) algorithm is utilized to estimate the parameters of GMM. To preserve sharp features, we add an additional bilateral term to the objective function in the M-step. We eventually add a detail layer to the deblurred image for refinement. Extensive experiments on both synthetic and real-world data demonstrate that our method outperforms state-of-the-art techniques, in terms of robustness, visual quality, and quantitative metrics.
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ISSN:1057-7149
1941-0042
1941-0042
DOI:10.1109/TIP.2020.3036745