journal article·2022-07-02Open access

Attention-Gate-Based Model with Inception-like Block for Single-Image Dehazing

Cheng-Ying Tsai, Chieh-Li Chen

Applied Sciences· Volume 12· Issue 13

Abstract

In recent decades, haze has become an environmental issue due to its effects on human health. It also reduces visibility and degrades the performance of computer vision algorithms in autonomous driving applications, which may jeopardize car driving safety. Therefore, it is extremely important to instantly remove the haze effect on an image. The purpose of this study is to leverage useful modules to achieve a lightweight and real-time image-dehazing model. Based on the U-Net architecture, this study integrates four modules, including an image pre-processing block, inception-like blocks, spatial pyramid pooling blocks, and attention gates. The original attention gate was revised to fit the field of image dehazing and consider different color spaces to retain the advantages of each color space. Furthermore, using an ablation study and a quantitative evaluation, the advantages of using these modules were illustrated. Through existing indoor and outdoor test datasets, the proposed method shows outstanding dehazing quality and an efficient execution time compared to other state-of-the-art methods. This study demonstrates that the proposed model can improve dehazing quality, keep the model lightweight, and obtain pleasing dehazing results. A comparison to existing methods using the RESIDE SOTS dataset revealed that the proposed model improves the SSIM and PSNR metrics by at least 5–10%.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Image Enhancement Techniques · Video Surveillance and Tracking Methods · Fire Detection and Safety Systems

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 70101, Taiwan

Funding

Ministry of Science and Technology, Taiwan

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