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Privacy Protection In Medical Images Using Histogram Shifting Based RDH
Anjali O,  Beena M V
In the medical field the patients’ confidential medical records need to be transmitted securely. One method would be to embed these confidential data in medical images and extract it at the other end. But while performing this embedding and extraction no data loss or image distortion should occur. So here this project presents a method of embedding the medical data in medical images using histogram shifting based reversible data hiding. An embedding process is used here where the difference between adjacent pixels in the image is utilized. Since external data is being embedded into the original image, some noticeable changes can occur in the image which might affect the security of the data. To avoid this, after data embedding, the output image should be identical to its original image. Also after extraction the doctor should be able to provide the proper treatment using the images and the extracted data. Reversible data hiding is a newly developed branch in data hiding or watermarking researches. Histogram shifting (HS) is a useful technique of reversible data hiding (RDH). With HS-based RDH, high capacity and low distortion can be achieved efficiently and both the original image and the hidden data can be perfectly recovered. The method is reversible in the sense that the extraction process is exactly opposite to embedding process. Finally the performance can be evaluated by mean square error, peak signal to noise ratio, structural similarity index etc. In future, to push forward the capacity-distortion behaviour of RDH, more meaningful shifting and embedding functions are expected.
Keywords- Histogram Shifting (HS), Reversible Data Hiding (RDH)
Unique Identification Number - IJEDR1403008Page Number(s) - 2931-2938Pubished in - Volume 2 | Issue 3 | Sept 2014DOI (Digital Object Identifier) -    Publisher - IJEDR (ISSN - 2321-9939)
Cite this Article
Anjali O,  Beena M V,   "Privacy Protection In Medical Images Using Histogram Shifting Based RDH"
, International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.2, Issue 3, pp.2931-2938, Sept 2014, Available at :http://www.ijedr.org/papers/IJEDR1403008.pdf