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Single-Image Dehazing Based on Improved Bright Channel Prior and Dark Channel Prior

Electronics, 2023
Single-image dehazing plays a significant preprocessing role in machine vision tasks. As the dark-channel-prior method will fail in the sky region of the image, resulting in inaccurately estimated parameters, and given the failure of many methods to address a large band of haze, we propose a simple yet effective method for single-image dehazing based ...
Hao Zhou, Hailing Xiong
exaly   +2 more sources

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Blind Image Deblurring Using a Non-Linear Channel Prior Based on Dark and Bright Channels

IEEE Transactions on Image Processing, 2021
Blind image deblurring aims at recovering a clean image from the given blurry image without knowing the blur kernel. Recently proposed dark and extreme channel priors have shown their effectiveness in deblurring various blurry scenarios. However, these two priors fail to help the blur kernel estimation under the particular circumstance that clean ...
Xianyu Ge, Jieqing Tan
exaly   +4 more sources

Radial Bright Channel Prior for Single Image Vignetting Correction

Lecture Notes in Computer Science, 2014
This paper presents a novel prior, radial bright channel (RBC) prior, for single image vignetting correction. The RBC prior is derived from a statistical property of vignetting-free images: for the pixels sharing the same radius in polar coordinates of an image, at least one pixel has a high intensity value at some color channel.
Seungyong Lee, Hyunjoon Lee, Hojin Cho
exaly   +3 more sources

Dark and Bright Channel Prior Embedded Network for Dynamic Scene Deblurring [PDF]

IEEE Transactions on Image Processing, 2020
Recent years have witnessed the significant progress on convolutional neural networks (CNNs) in dynamic scene deblurring. While most of the CNN models are generally learned by the reconstruction loss defined on training data, incorporating suitable image priors as well as regularization terms into the network architecture could boost the deblurring ...
Lei Zhang, Wangmeng Zuo, Jianrui Cai
exaly   +3 more sources

Radar-bright channels on Titan

Icarus, 2010
Abstract During Cassini’s T44 flyby of Titan (May 28, 2008), the Cassini SAR (synthetic aperture radar) revealed sinuous channels in the Southwest of Xanadu. These channels feature very large radar cross-sections, up to 5 dB, whereas the angle of incidence was relatively high, ∼20°.
Le Gall, Alice, Janssen, M. A., Paillou, Philippe, Lorenz, R. D., Wall, S. D.   +4 more
openaire   +1 more source

Individual differences of the contribution of chromatic channels to brightness

Journal of the Optical Society of America A, 1993
Perceived brightness is considered to be a combined consequence of outputs of the luminance channel and the chromatic channels in the visual system. The differences of logarithmic spectral luminous efficiencies between heterochromatic brightness matching and flicker photometry that were obtained from 16 subjects were examined by using principal ...
H, Yaguchi, A, Kawada, S, Shioiri, Y, Miyake   +3 more
openaire   +2 more sources

Brightness generation in the human visual system. Colour-brightness: A contribution of cortical colour channels to brightness sensation

Vision Research, 1977
Abstract There is substantial evidence that the signals of colour opponent cells in the human visual system make a contribution to the brightness signal in perception space—in addition to the signals of the achromatic cells. To measure this contribution—the colour-brightness —psychophysically, brightness matches between monochromatic pairs of ...
H D, Bauer, R, Röhler
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Estimating Shadows with the Bright Channel Cue

2012
In this paper, we introduce a simple but efficient cue for the extraction of shadows from a single color image, the bright channel cue. We discuss its limitations and offer two methods to refine the bright channel: by computing confidence values for the cast shadows, based on a shadow-dependent feature, such as hue; and by combining the bright channel ...
Panagoupolos, Alexandros, Wang, Chaohui, Samaras, Dimitris, Paragios, Nikos   +3 more
openaire   +1 more source

Image Enhancement Using Bright Channel Prior

2016 International Conference on Industrial Informatics - Computing Technology, Intelligent Technology, Industrial Information Integration (ICIICII), 2016
In view of the low illumination color images, image enhancement technology is commonly used in image processing. In this study, we propose a brightness enhancement algorithm based on the bright channel prior, which focuses on the gray removal. The local patches in sufficient illumination images contain some pixels that have very high intensities in at ...
Xinhua Guo
exaly   +2 more sources

Hybrid Single Image Dehazing With Bright Channel and Dark Channel Priors

2017 2nd International Conference on Image, Vision and Computing (ICIVC), 2017
This paper proposes a novel method combining dark channel prior (DCP) and bright channel prior (BCP) for single image dehazing. The proposed method achieves airlight approximations by implementing numerical proximity of atmospheric light, which use the average value of the DCP and BCP.
Yunbo Rao, Eric Ashalley, Jehoiada Jackson   +2 more
exaly   +2 more sources