Dr. Raman Balasubramanian Profile

Dr. Raman Balasubramanian

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Proceedings Article | 15 March 2023 Presentation + Paper

Design and analysis of high-performance real-time image dehazing using convolutional neural and generative adversarial networks

Partha Kaushik, Avi Gupta, Hemkant Nehete, Raman Balasubramanian, Brajesh Kumar Kaushik

Proceedings Volume 12438, 124380M (2023) https://doi.org/10.1117/12.2651023

KEYWORDS: Convolution, Image transmission, Image processing, Atmospheric modeling, Air contamination, Network architectures, Design and modelling

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Optical imaging sensors suffer from distortions caused by atmospheric particles such as dust, mist, fog, haze, and smoke, resulting in degradation of object detection and recognition. To circumvent these issues, image dehazing is an essential preprocessing stage for various real time applications. Several conventional dehazing methods rely on the haze formation model that are inherently dependent on a large number of variables, requiring huge computational burden on the processor. This severely affects the dehazing performance and also restricts real time processing. To overcome these issues, this work deals with an end-to-end real time dehazing architecture based on light weight Convolutional Neural Network (CNN) and Generative Adversarial Network (GAN). Proposed depthwise seperable and residual (DSR) block has been used instead of convolution layers that significantly lowered the parameters and computations. Furthermore, sigmoid and bilateral ReLu activation functions have been exploited to prevent oversaturation of dehazed images. The proposed model achieves significant enhancements in peak signal-to-noise ratio (PSNR) and structural similarity index measure (SSIM) for both synthetic and real-world hazy images, when compared to other architectures such as dark channel prior (DCP) and DehazeNet. The performance outcome of CNN and GAN based dehazing architectures are analyzed and compared.

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