Temporally Synchronized Reversible Data Hiding of EEG to MREG

Fylakis, Angelos; Keskinarkaus, Anja; Kiviniemi, Vesa; Seppänen, Tapio

doi:10.5220/0005665700580067

Cited by 1 publication

(2 citation statements)

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“…Moreover and most importantly, the host is reliably reversed to its original state. Furthermore, we demonstrate an alternative use of histogram shifting approaches as we did in [29] where we were using 32-bit MREG based on an approach initially designed for 8-bit static images. In this case, we use 24-bit FTIR images.…”

Section: Proposed Methodsmentioning

confidence: 99%

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Reversible Data Hiding in FTIR Microspectroscopy Images with Tamper Indication and Payload Error Correction

Fylakis

Keskinarkaus

Partala

et al. 2017

BioMed Research International

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Fourier transform infrared (FTIR) microspectroscopy images contain information from the whole infrared spectrum used for microspectroscopic analyses. In combination with the FTIR image, visible light images are used to depict the area from which the FTIR spectral image was sampled. These two images are traditionally acquired as separate files. This paper proposes a histogram shifting-based data hiding technique to embed visible light images in FTIR spectral images producing single entities. The primary objective is to improve data management efficiency. Secondary objectives are confidentiality, availability, and reliability. Since the integrity of biomedical data is vital, the proposed method applies reversible data hiding. After extraction of the embedded data, the FTIR image is reversed to its original state. Furthermore, the proposed method applies authentication tags generated with keyed Hash-Based Message Authentication Codes (HMAC) to detect tampered or corrupted areas of FTIR images. The experimental results show that the FTIR spectral images carrying the payload maintain good perceptual fidelity and the payload can be reliably recovered even after bit flipping or cropping attacks. It has been also shown that extraction successfully removes all modifications caused by the payload. Finally, authentication tags successfully indicated tampered FTIR image areas.

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Section: Proposed Methodsmentioning

confidence: 99%

“…For this reason, similar to our previous research paper [29], the solution was to downsample the FTIR spectral component difference matrix histogram from 2 × 2 24 − 1 to 2 × 2 8 − 1 bins. This downsampling process should not downgrade the actual quality; otherwise, reversion is not possible.…”

Section: Key Technological Componentsmentioning

confidence: 99%