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SUBJECT CODE:CS1002 DEPARTMENT OF ECE. “One picture is worth more than ten thousand words” Anonymous.

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Presentation on theme: "SUBJECT CODE:CS1002 DEPARTMENT OF ECE. “One picture is worth more than ten thousand words” Anonymous."— Presentation transcript:

1 SUBJECT CODE:CS1002 DEPARTMENT OF ECE

2 “One picture is worth more than ten thousand words” Anonymous

3 IMAGE PROCESSING lens object Image Formation image plane

4 light source Image Formation

5 projection through lens projection through lens image of object Image Formation

6 DIGITAL IMAGE PROCESSING projection onto discrete sensor array. Image Formation digital camera

7 sensors register average color. Image Formation sampled image

8 continuous colors, discrete locations. Image Formation discrete real- valued image

9 UNIT-1 DIGITAL IMAGE FUNDAMENTALS AND TRANSFORMS UNIT-2 IMAGE ENHANCEMENT TECHNIQUES UNIT-3 IMAGE RESTORATION UNIT-4 IMAGE COMPRESSION UNIT-5 IMAGE SEGMENTATION AND REPRESENTATION

10  Elements of visual perception – Image sampling and quantization-Basic relationship between pixels-Basic geometric transformation  Introduction to Fourier transform and DFT- Properties of 2D Fourier transform-FFT- Seperable image transforms  Walsh hadamard- discrete cosine transform- haar–slanttransform-karhunen–loeve transform

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12  Spatial Domain methods: Basic grey level transformation – Histogram equalization – Image subtraction.  Image averaging –Spatial filtering: Smoothing, sharpening filters – Laplacian filters  Frequency domain filters : Smoothing – Sharpening filters – Homomorphic filtering

13 Gray Level Image HISTOGRAM IMAGE IMAGEIMAGE

14  Model of Image Degradation/restoration process – Noise models – Inverse filtering -Least mean square filtering  Constrained least mean square filtering – Blind image restoration – Pseudo inverse – Singular value decomposition.

15 INVERSE FILTERING

16  Lossless compression: Variable length coding – LZW coding – Bit plane coding- predictive coding-DPCM  Lossy Compression: Transform coding – Wavelet coding – Basics of Image compression standards: JPEG, MPEG,Basics of Vector quantization

17 IMAGE C O M P R E S I O N

18  Edge detection – Thresholding - Region Based segmentation – Boundary representation: chair codes- Polygonal approximation  Boundary segments – boundary descriptors: Simple descriptors-Fourier descriptors - Regional descriptors –Simple descriptors- Texture

19 EDGE DETECTION

20 Rafael C Gonzalez, Richard E Woods 2nd Edition, Digital Image Processing - Pearson Education 2003.

21 1.William K Pratt, Digital Image Processing John Willey (2001) 2.Image Processing Analysis and Machine Vision – Millman Sonka, Vaclav hlavac, Roger Boyle, Broos/colic, Thompson Learniy (1999). 3. A.K. Jain, PHI, New Delhi (1995)- Fundamentals of Digital Image Processing. 4.Chanda Dutta Magundar – Digital Image Processing and Applications, Prentice Hall of India, 2000

22 www.imageprocessingplace.com http://www.archive.org/details/ Lectures_on_Image_Processing

23 Boundary descriptors Sharpening filters Edge detection Image averaging

24 Discrete cosine transform Elements of visual perception. Thresholding Polygonal approximation. Basics of image compression standards

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