Wtcl-dehaze:rethinking Real-world Image Dehazing via Wavelet Transform and Contrastive Learning

Divine Joseph Appiah, Donghai Guan, and Mingqiang Wei, School of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, China

ABSTRACT

Images captured in hazy outdoor conditions often suffer from color distortion, low contrast, and loss of detail, which impair high-level vision tasks. Single image dehazing is essential for applications such as autonomous driving and surveillance, with the aim of restoring image clarity. In this work, we propose WTCL-Dehaze an enhanced semi-supervised dehazing network that integrates Contrastive Loss and Discrete Wavelet Transform (DWT). We incorporate contrastive regularization to enhance feature representation by contrasting hazy and clear image pairs. Additionally, we utilize DWT for multi-scale feature extraction, effectively capturing high-frequency details and global structures. Our approach leverages both labeled and unlabeled data to mitigate the domain gap and improve generalization. The model is trained on a combination of synthetic and real-world datasets, ensuring robust performance across different scenarios. Extensive experiments demonstrate that our proposed algorithm outperforms state-of-the-art single image dehazing methods on both benchmark datasets and real-world images.

Keywords

Image Dehazing, Semi-Supervised Learning, Contrastive Loss, Discrete Wavelet Transform, Deep Learning.

Accessibility Testing

Om Prakashl, SMS Lucknow, India

ABSTRACT

Accessibility initiative is for promoting the applications, websites and other online material’s accessibility for those who suffer from some disabilities like visibility or hearing. Such disabilities restrict such people from engaging in many arts, community, cultural, and leisure events because the content of these events is inaccessible to them, i.e. they cannot hear it or see it. Fortunately, there are many firms who work to make such events, applications or activities accessible for handicapped people. Accessible Events Promotions Ltd is one such concern whose aim is to put all accessible events in one place in an accessible format and also promote access improvements..

Keywords

Accessibility, SDLC, Accessible Events Promotions Ltd, hearing impaired.