Comparison of Image Encryption Methods Using Hybrid Frequency Domain Transforms and Chaotic Maps
Year: 2025
Type: conference-paper
Abstract: This paper presents a comparative study of hybrid image encryption algorithms combining frequency-domain transforms with chaotic scrambling.Three methods are analyzed: DCT + Arnold, WHT + Arnold, and DCT → WHT + Arnold.The Fast Walsh-Hadamard Transform (FWHT) is used to enhance computational efficiency.Cryptographic strength and reconstruction quality are evaluated using entropy, correlation coefficients, NPCR, UACI, MSE, and PSNR.Results show that WHT + Arnold (FWHT-based) offers the fastest processing with high security and lossless decryption, while the hybrid DCT → WHT + Arnold also demonstrates strong cryptographic characteristics.
DOI: 10.51408/csit2025_33
Authors: Sergo Episkoposyan, Davit Hovhannisyan
Institution: National Polytechnic University of Armenia
Language: English
Subfield: Computer Vision and Pattern Recognition
Field: Computer Science
Domain: Physical Sciences
Open Access status: gold
OpenAlex ID: W4414454344
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