DehazeDCT: Towards Effective Non-Homogeneous Dehazing via Deformable Convolutional Transformer

Image dehazing, a pivotal task in low-level vision, aims to restore the visibility and detail from hazy images. Many deep learning methods with powerful representation learning capability demonstrate advanced performance on non-homogeneous dehazing, however, these methods usually struggle with processing high-resolution images (e.g., 4000 × 6000) due to their heavy computational demands. To address these challenges, we introduce an innovative non-homogeneous Dehazing method via Deformable Convolutional Transformer-like architecture (DehazeDCT). Specifically, we first design a transformerlike network based on deformable convolution v4, which offers long-range dependency and adaptive spatial aggregation capabilities and demonstrates faster convergence and forward speed. Furthermore, we leverage a lightweight Retinex-inspired transformer to achieve color correction and structure refinement. Extensive experiment results and highly competitive performance of our method in NTIRE 2024 Dense and Non-Homogeneous Dehazing Challenge, ranking second among all 16 submissions, demonstrate the superior capability of our proposed method. The code is available: https://github.com/movingforward100/Dehazing_R.

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Datasets


Results from the Paper


Task Dataset Model Metric Name Metric Value Global Rank Benchmark
Nonhomogeneous Image Dehazing DNH-HAZE DehazeDCT PSNR 21,73 # 1
SSIM 0.743 # 1
Single Image Dehazing DNH-HAZE DehazeDCT PSNR 21.73 # 1
SSIM 0.743 # 1
Image Dehazing DNH-HAZE DehazeDCT PSNR 21.73 # 1
SSIM 0.743 # 1
Nonhomogeneous Image Dehazing HD-NH-HAZE DehazeDCT PSNR 22.36 # 1
SSIM 0.752 # 1
Single Image Dehazing HD-NH-HAZE DehazeDCT PSNR 22.36 # 1
SSIM 0.752 # 1
Image Dehazing HD-NH-HAZE DehazeDCT PSNR 22.36 # 1
SSIM 0.752 # 1
Nonhomogeneous Image Dehazing NH-HAZE DehazeDCT PSNR 22.78 # 1
SSIM 0.734 # 1
Single Image Dehazing NH-HAZE DehazeDCT PSNR 22.78 # 1
Nonhomogeneous Image Dehazing NH-HAZE2 DehazeDCT PSNR 22.86 # 1
SSIM 0.877 # 1
Image Dehazing NH-HAZE2 DehazeDCT PSNR 22.86 # 1
SSIM 0.877 # 1
Single Image Dehazing NH-HAZE2 DehazeDCT PSNR 22.86 # 1
SSIM 0.877 # 1
Nonhomogeneous Image Dehazing NH-HAZE validation DehazeDCT PSNR 22.78 # 1
SSIM 0.734 # 1

Methods