激光与光电子学进展, 2020, 57 (22): 221009, 网络出版: 2020-11-05
基于大气光偏振层析的雾天图像重构方法 
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Method of Haze Image Reconstruction Based on PolarizationLayering and Analysis of Airlight
图 & 表
图 2. 自然图像的梯度特征。(a)自然场景图像;(b)梯度直方图;(c)拉普拉斯分布
Fig. 2. Gradient characteristics of nature image. (a) Nature scene image; (b) gradient histogram; (c) Laplace distribution
图 3. 不同雾浓度下大气光的梯度特征
Fig. 3. Gradient characteristics of airlight under different dense haze
图 4. 大气光梯度先验。(a)大气光梯度直方图;(b)大气光梯度先验模型
Fig. 4. Airlight gradient prior. (a) Gradient histogram of airlight; (b) model of airlight gradient prior
图 6. 0°通道下大气光偏振图像分层结果。(a)雾天偏振图像;(b)目标纹理层;(c)大气光层;(d)所提方法估计的大气光偏振图像
Fig. 6. Layering results for polarized airlight images under 0° channel. (a) Polarized haze image; (b) object texture layer; (c) airlight layer; (d) estimated polarized airlight image by proposed method
图 7. 大气光偏振图像估计结果。(a)雾天偏振图像;(b)目标纹理层;(c)大气光层;(d)所提方法估计的大气光偏振图像
Fig. 7. Estimated results for polarized airlight images. (a) Polarized haze image; (b) object texture layer; (c) airlight layer; (d) estimated polarized airlight image using the proposed method
图 8. 雾天图像重构结果。(a)雾天强度图像;(b)所提方法估计的大气光图像;(c)所提方法重构的图像
Fig. 8. Results of haze image reconstruction. (a) Haze intensity image; (b) estimated airlight image by proposed method; c) reconstructed image using the proposed method
图 9. 灰度直方图与梯度直方图比较结果。(a)雾天图像与重构图像;(b)灰度直方图;(c)梯度直方图
Fig. 9. Comparison results of gray histogram and gradient histogram. (a) Haze image and reconstructed image; b) gray histogram; (c) gradient histogram
图 10. 不同雾浓度条件下的雾天图像重构结果。(a)雾天图像;(b) Schechner方法的去雾结果;(c)所提方法的去雾结果
Fig. 10. Reconstructed results for haze image with different dense haze. (a) Haze image; (b) dehazing results of Schechner method; (c) dehazing results of proposed method
图 11. 雾天图像与大气光图像的偏振度图像及其灰度直方图。(a)雾天图像;(b)雾天图像的偏振度图;(c)雾天图像的灰度直方图;(d)所提方法估计的大气光图像;(e)大气光图像的偏振度图;(f)大气光图像的灰度直方图
Fig. 11. Degree of polarization(Dop) image and its gray histogram of haze image and airlight image. (a) Haze image; (b) Dop image of haze image; (c) gray histogram of haze image; (d) estimated airlight image by proposed method; (e) Dop image of airlight image; (f) gray histogram of airlight image
表 1不同去雾方法的客观评价结果
Table1. Objective evaluation results for different dehazing methods
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邵子奇, 金海红, 钱立进, 范之国. 基于大气光偏振层析的雾天图像重构方法[J]. 激光与光电子学进展, 2020, 57(22): 221009. Ziqi Shao, Haihong Jin, Lijin Qian, Zhiguo Fan. Method of Haze Image Reconstruction Based on PolarizationLayering and Analysis of Airlight[J]. Laser & Optoelectronics Progress, 2020, 57(22): 221009.
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