Preprint Article Version 1 This version is not peer-reviewed

Comparing Yiq and Ycbcr Colour Image Transforms for Semi-Fragile Medical Image Steganography

Version 1 : Received: 25 May 2019 / Approved: 27 May 2019 / Online: 27 May 2019 (10:13:02 CEST)

How to cite: Eze, P.; Udaya, P.; Evans, R.; Liu, D. Comparing Yiq and Ycbcr Colour Image Transforms for Semi-Fragile Medical Image Steganography. Preprints 2019, 2019050308 (doi: 10.20944/preprints201905.0308.v1). Eze, P.; Udaya, P.; Evans, R.; Liu, D. Comparing Yiq and Ycbcr Colour Image Transforms for Semi-Fragile Medical Image Steganography. Preprints 2019, 2019050308 (doi: 10.20944/preprints201905.0308.v1).

Abstract

Visible light photography diagnostic images are coloured ex vivo medical images popularly used in Dermatology and Endoscopy for diagnosis and monitoring. The need to protect the integrity of these images as well as associated patient data calls for techniques such as image steganography and watermarking. This research explores and compares the effect of watermarking on the YIQ and YCbCr colour transforms used in processing digital coloured images and video in recent times. Using a new spread spectrum watermarking algorithm, it was found that YIQ has better distortion performance than YCbCr in the order of 3dB while YCbCr had lower BER for accurate watermark retrieval and tamper detection in the order of 1.3 x 10-3.

Subject Areas

Colour Model; Steganography; Medical Image; C4S; distortion

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