Clinical Assessment of Watermarked Medical Images
نویسندگان
چکیده
منابع مشابه
Clinical Assessment of Watermarked Medical Images
Problem statement: Digital watermarking provides security to medical images. Watermarking in Region Of Interest (ROI) however distorts medical images but it is known that the resulting loss of fidelity is visually imperceptible. Approach: Clinical assessment will objectively evaluate the distortion on medical images to see whether or not medical diagnosis is altered. We used 75 medical images c...
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A recent image quality measure, M-SVD, can express the quality of distorted images either numerically or graphically. Based on the Singular Value Decomposition (SVD), it consistently measures the distortion across different distortion types and within a given distortion type at different distortion levels. The SVD decomposes every real matrix into a product of three matrices A = USV, where U an...
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complies with the regulations of the University and meets the accepted standards with respect to originality and quality. In this thesis, we investigate different types of robust schemes for transmission of medical images with concealed patient information as a watermark. In these schemes, spatial domain digital watermarking technique is adapted to embed the patient information as a watermark i...
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In this paper, the influence of the estimated perceptual mask from the watermarked image is analyzed with the purpose of decreasing the probability of error in detection. We concentrate on a well known perceptual model that has been applied to 8x8 block-wise DCT coefficients. A new procedure based on extracting the mask of the original image from the watermarked image is developed. A closed for...
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ژورنال
عنوان ژورنال: Journal of Computer Science
سال: 2009
ISSN: 1549-3636
DOI: 10.3844/jcssp.2009.857.863