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Contrast restoration of weather degraded images

Narasimhan, S.G., Nayar, S.K.·2003·IEEE Transactions on Pattern Analysis and Machine Intelligence

Abstract

Images of outdoor scenes captured in bad weather suffer from poor contrast. Under bad weather conditions, the light reaching a camera is severely scattered by the atmosphere. The resulting decay in contrast varies across the scene and is exponential in the depths of scene points. Therefore, traditional space invariant image processing techniques are not sufficient to remove weather effects from images. We present a physics-based model that describes the appearances of scenes in uniform bad weather conditions. Changes in intensities of scene points under different weather conditions provide simple constraints to detect depth discontinuities in the scene and also to compute scene structure. Then, a fast algorithm to restore scene contrast is presented. In contrast to previous techniques, our weather removal algorithm does not require any a priori scene structure, distributions of scene reflectances, or detailed knowledge about the particular weather condition. All the methods described in this paper are effective under a wide range of weather conditions including haze, mist, fog, and conditions arising due to other aerosols. Further, our methods can be applied to gray scale, RGB color, multispectral and even IR images. We also extend our techniques to restore contrast of scenes with moving objects, captured using a video camera.

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Metadata

Authors
Narasimhan, S. G., & Nayar, S. K.
Venue
IEEE Transactions on Pattern Analysis and Machine Intelligence
Published
2003-06
Volume
25
Issue
6
Pages
713-724
ISSN
0162-8828 (ISSN-L)
OpenAlex
W2097900287
Cited by
1,642
References
21
FWCI
6.19
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Contrast restoration of weather degraded images. https://app.cochat.ai/papers/10.1109/tpami.2003.1201821
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Narasimhan, S. G., & Nayar, S. K. (2003). Contrast restoration of weather degraded images. IEEE Transactions on Pattern Analysis and Machine Intelligence. https://doi.org/10.1109/tpami.2003.1201821

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