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All Journal JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING INCODING: Journal of Informatics and Computer Science Engineering
Noor, Fredy
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Computer Science & IT Engineering

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Analysis of Combined Contrast Limited Adaptive Histogram Equalization (CLAHE) and Median Filter Methods for Enhancement of CCTV Screenshot Image Quality Noor, Fredy; Muhathir, Muhathir; Fadlisyah, Fadlisyah; Syahputra, Dinur
JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING Vol. 8 No. 2 (2025): Issues January 2025
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jite.v8i2.14016

Abstract

The quality of CCTV images often deteriorates due to poor lighting, low-quality cameras, and noise, hindering effective security analysis. This study aims to assess the combined effect of Contrast Limited Adaptive Histogram Equalization (CLAHE) and median filtering on improving the quality of CCTV screenshot images by enhancing contrast and reducing noise. Using a quantitative approach, four low-quality CCTV images were processed with CLAHE to improve contrast, followed by median filtering to reduce noise. Image quality was evaluated using two metrics: Mean Squared Error (MSE) and Peak Signal-to-Noise Ratio (PSNR). Results showed that CLAHE significantly improved image contrast, with MSE values ranging from 17.7513 to 159.092 and PSNR from 39.4809 to 47.1987. After applying the median filter, MSE values decreased to 12.1238–22.1747, and PSNR increased to 34.7288–37.3442, indicating noise reduction. The combination of CLAHE and median filter showed even better results, with MSE values ranging from 0.000993935 to 0.00508972, and PSNR ranging from 71.1032 to 78.1966. This combination significantly improved the quality of the CCTV screenshots, making them more suitable for security and forensic analysis. The findings suggest that CLAHE and median filtering can effectively enhance image clarity. Future studies should focus on optimizing these techniques for various lighting conditions and exploring other methods to address extreme noise levels in CCTV images
Perancangan Sistem Pengajuan Pemasangan Baru Layanan Wifi.Id Di PT. Telkom Regional-1 Sumatera Noor, Fredy; Khairani, Nurul
INCODING: Journal of Informatics and Computer Science Engineering Vol 4, No 2 (2024): INCODING OKTOBER
Publisher : Mahesa Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34007/incoding.v4i2.728

Abstract

The rapid development of information technology encourages telecommunication companies to continue to innovate, including PT. Telkom Regional-1 Sumatra which provides Wifi.id services. This study aims to design a new installation submission system for web-based Wifi.id services to improve the efficiency and speed of the installation process. The system is designed using PHP and CSS programming languages, as well as MySQL as the database. The design method involves the use of flowcharts, sitemaps, context diagrams, entity relationship diagrams (ERDs), and data flow diagrams (DFDs) to ensure the system is well structured. The results of the study show that the designed system can make it easier for the people of North Sumatra to apply for the installation of Wifi.id services efficiently and transparently. This system also increases the speed and effectiveness of the installation process, thus providing benefits for both customers and PT. Telkom Regional-1 Sumatra. With the implementation of this system, the installation application process becomes more organized, supports the improvement of service quality, and has a positive impact on the customer experience
Co-Authors Fadlisyah Fadlisyah Muhathir, Muhathir Nurul Khairani Syahputra, Dinur