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Updated: Aug 23, 2026

Multimodal Cross-Device and Marker-Free Co-Registration of Preclinical Imaging Modalities
Published on: October 27, 2023
Simultaneous storage of patient information with medical images in the frequency domain
Rajendra Acharya1, U C Niranjan, S S Iyengar
1Electronic and Computer Engineering Division, School of Engineering, Ngee Ann Polytechnic, 535 Clementi Road, Singapore 599489, Singapore. aru@np.edu.sg
Abstract:
Digital watermarking is a technique of hiding specific identification data for copyright authentication. Most of the medical images are compressed by joint photographic experts group (JPEG) standard for storage. The watermarking is adapted here for interleaving patient information with medical images during JPEG compression, to reduce storage and transmission overheads. The text data is encrypted before interleaving with images in the frequency domain to ensure greater security. The graphical signals are also interleaved with the image. The result of this work is tabulated for a specific example and also compared with the spatial domain interleaving.

