improved medical image encryption technology
TRANSCRIPT
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 1/22
A Digital Watermarking Approach usingA Digital Watermarking Approach using FuzzyFuzzy LogicLogic
HAFNAS E.KHAFNAS E.K
ROLL NO : 18ROLL NO : 18
S7, AE&IS7, AE&I
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 2/22
Introduction
Digital watermarking
Basics
Applications & Ideal features
Prevailing techniques & Disadvantages
New Techniques Human Visual System(HVS) Model
Fuzzy Inference System (FIS)
Process Of Technique
Watermark embedding Process
Watermark Detection Process
Validation
Conclusion
Reference
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 3/22
DIGITAL WATERMARKINGDIGITAL WATERMARKING
What ?What ? Describes methods and technologies that hide
information in number or text, in digital media
Invisible watermarking
33
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 4/22
DIGITAL WATERMARKINGDIGITAL WATERMARKING
ApplicationsApplications Copyright protection
Authentication and security
Cryptoglyph.
A new way to share data
Medical Image Transmission
4
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 5/22
DIGITAL WATERMARKINGDIGITAL WATERMARKING
Ideal FeaturesIdeal Features Robustness
Imperceptibility
Security
5
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 6/22
DIGITAL WATERMARKINGDIGITAL WATERMARKING Prevailing TechniquesPrevailing Techniques
LSB Watermarking
Colour Separation Technique
Bit Stream Watermarking
Word Space Coding, Line Space Coding &Character Coding
6
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 7/22
DIGITAL WATERMARKINGDIGITAL WATERMARKING Prevailing TechniquesPrevailing Techniques
Filtering
Compression
Additive noise
Rotation
Scaling
Transformations
Cannot be used for Medical information protection
7
These approaches are not robust against attacks such as
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 8/22
DIGITAL WATERMARKINGDIGITAL WATERMARKING
For medical images the signature must be imperceptible
The watermarked image should be broadly similar to the
original image so as not to lead to a misdiagnosis.
8
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 9/22
DIGITAL WATERMARKING USINGDIGITAL WATERMARKING USING
FUZZY INFERENCE SYSTEM & HVS MODEL
9
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 10/22
DIGITAL WATERMARKINGDIGITAL WATERMARKING FIS & HVS MODELUSINGUSING
The Proposed System Consists of fuzzy inference system to
extract the knowledge of sensitivity of human eye usingthe HVS model.
The FIS and the HVS handsets are used to automatically
determine the insertion force in certain frequency
components without being visually perceptible.
10
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 11/22
The Human visual system model (HVS) MODEL
To hide the watermark in the image, it is useful to exploit the
weaknesses of the human visual system
11
The human visual system has been characterized with several Phenomena
that permit pixel element adjustments to elude perception.
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 12/22
Fuzzy Inference System ( FIS )
We need an expert who knows what to do in all cases :
Increase the insertion force in less sensitive areas (areas textured)
Decrease the strength of integration in sensitive areas
(edges and homogeneous areas) ... etc.
12
The problem is to automate these processesThe problem is to automate these processes
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 13/22
Fuzzy Inference System ( FIS )
A popular computing Framework based on fuzzy set theory
13
o Closeness To Human Perception And Reasoning
o Intuitive Handling And Simplicity
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 14/22
Fuzzy Inference System ( FIS )
14
Base fuzzy rules
If««««.........then
Inference motor
Defuzzification
Fuzzification
Input Fuzzy
Fuzzy Output
Net Output
Net Input
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 15/22
WATER MARKING EMBEDDING PROCESS
15
To enhance the robustness against various image distortions
an insertion force which must be below a threshold of visual perceptibility.
This force is not always consistent on all components of the watermark inserted
but depends on the characteristics of the zones of insertion (Textured, uniform..)
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 16/22
WATER MARKING EMBEDDING PROCESS
16
x,y,k
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 17/22
17
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 18/22
WATER MARKING DETECTING PROCESS
18
BLIND DETECTION PROCESS
Calculation of correlation
between M·(i) & M(i)
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 19/22
Evaluation Of Performance
19
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 20/22
A promising technique for watermarking images.
A Hybrid model , making most of the HVS & FIS systems
More Robust & Imperceptible
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 21/22
REFERENCES Sameh Oueslati and Adnane Cherif and Bassel Solaiman ,(2010),´Maximising strength Of Digital
Watermarking´, S ignal & Image Processing : An International Journal( S IPIJ) Vol.1, No.2 , December 2010
Darshana Mistry,(2010), ³Comparison of Digital Water Marking methods´, (IJC SE ) International Journal on Computer S cience and E ngineering Vol. 02 , No. 09, 2010 , 2905-2909
Florent Autrusseau, Patrick Le Callet, Alexandre Ninassi,(2007), ´ A study of content basedwatermarking using an advanced HVS model´, Intelligent Information Hiding and Multimedia S ignal Processing , 2007. IIHM S P 2007. Third International Conference on I EEE proceedings
Digital watermar k ing concepts, http://enc y clopedia.jrank .org/articles/pages/6725/Digital-Watermar k ing.html
Fuzzy Inference Systems ::(Fuzzy Logic Toolbox)www.mathwor k s.com/help/toolbo x /fuzz y /fp351dup8.html
21
5/13/2018 Improved Medical Image Encryption Technology - slidepdf.com
http://slidepdf.com/reader/full/improved-medical-image-encryption-technology 22/22
22