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Original Research
Published 14 September 2026
Computationally efficient hybrid multi-domain transform fusion for secure image steganography using rate–distortion optimization and Toom–Cook acceleration
Abhrendu Bhattacharya · Raktim Kumar Dey · Amit R. Welekar · Rajesh Bose · Sandip Roy · Arfat Ahmad Khan · Muhammad Shoaib Ayub · Insoo Koo
Frontiers in Signal Processing
doi 10.3389/frsip.2026.1864603