An RGB-D image has extra information, i.e., depth information, which represents the distance between the camera and the objects. We extend a PEE-HS (prediction-error expansion with histogram shifting) based reversible data hiding method for RGB-D images to embed the depth information into the RGB layer without visible artifacts. The proposed method achieves the compatibility between the RGB-D and normal RGB images using a single marked image containing the depth information. Our experimental results show that the marked images have high quality without serious distortion.
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