Hiding depth map into stereo image in JPEG format using reversible watermarking

Authors:
Wenyi Wang;Jiying Zhao;Wa James Tam;Filippo Speranza;Zhou Wang
Affiliations:
University of Ottawa, Ontario, Canada;University of Ottawa, Ontario, Canada;Advanced Video Systems, Communication Research Centre Canada, Ottawa, Ontario, Canada;Advanced Video Systems, Communication Research Centre Canada, Ottawa, Ontario, Canada;University of Waterloo, Waterloo, Ontario, Canada
Venue:
Proceedings of the Third International Conference on Internet Multimedia Computing and Service
Year:
2011

Citing 2
Cited 1

A mathematical analysis of the DCT coefficient distributions for images

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Reversible watermark using the difference expansion of a generalized integer transform

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Hiding depth information into H.264 compressed video using reversible watermarking

Proceedings of the 1st ACM multimedia international workshop on Cloud-based multimedia applications and services for e-health

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Abstract

This paper presents a lossless data hiding approach based on Discrete Cosine Transform (DCT) as a new application of watermarking. In this application, a depth map obtained from a stereoscopic image pair is embedded into one of the two images using a reversible watermarking algorithm. Different from existing approaches which hide depth map in spatial domain, the depth information is hidden in the quantized DCT domain of the stereo image in our method. This modification makes the watermarking algorithm compatible with JPEG and MPEG compression. The bit-shift operation is utilized to embed the depth map into its associated 2D image reversibly for the purpose of obtaining stereo image with high visual quality after the depth map is extracted.