P. Raja

Work place: Sri Manakula Vinayagar Engineering College, Department of Electronics and Communication Engineering, Puducherry, Zip code– 605107, India

E-mail: rajashruthy@gmail.com

Website: https://orcid.org/0000-0002-9818-6004

Research Interests: Signal Processing

Biography

P. Raja completed in Bachelor of Engineering with the specialization of Electronics and Communication Engineering at Madras University, Master of Technology with the Speclization of Microelectronics and VLSI Design at IIT Madras and Completed Doctoral Program in Electronics and Communication Engineering at Pondicherry University. He working as a professor in the Department of Electronics and Communication Engineering, Sri Manakula Vinayagar Engineering College, Puducherry, India. He has two decades of teaching experience. His research area is VLSI Design, Signal Processing and Wireless Communication. He is a Professional Membership of the Indian Society for Technical Education and Institute of Electrical and Electronics Engineers, The Institution of Engineers (India) and The Institution of Engineers (India). He also received Excellent Professional Achievement Award (Class1)” from Society of Professional Engineers (India).

Author Articles
Image De-Weathering Using Median Channel Technique and RGB-based Transmission Map for Autonomous Vehicles

By P. Raja Sowmiya. M Subathra. V Sarah. S.

DOI: https://doi.org/10.5815/ijigsp.2024.05.07, Pub. Date: 8 Oct. 2024

Static weather conditions like fog, haze, and mist in hilly and urban areas cause reduced road visibility. Due to different weather conditions, autonomous vehicles cannot identify objects, traffic signs, and signals. So, this leads to many accidents, endangering living beings’ lives. The significance of this work lies in its aim to develop a model that can provide clear visibility for autonomous vehicles during bad weather conditions. Image restoration is one of the important issues in the image processing field as the images may be of low contrast and quality due to restricted visibility and, the development of a model that reduces the halos and artifacts produced in the image using the Median Channel based Image Restoration (MCIR) technique has significant research value. In this technique, the image restoration is done by calculating the atmospheric light and the transmission map using the MCIR technique and patching the pixels for different patch sizes. The Dark Channel Prior (DCP) method and the MCIR technique are compared for different patch sizes by evaluating the output images using the PSNR, SSIM, and MSE metrics. The results show that MCIR technique provides better Peak Signal-to-Noise Ratio (PSNR), Mean Square Error (MSE), and Structural Similarity Index Measure (SSIM) values than the DCP method with reduced halos and artifacts. This result highlights the effectiveness of the MCIR technique for image restoration. The software model developed can be applied to autonomous vehicles and surveillance cameras for the restoration of the images, which can improve their performance and safety.

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