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
NH-HAZE
| 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 |
