Explain sampling and quantization with reference to digital image processing, further also calculate the size of image which is represented by 512 colors with x and y coordinates given as 1028*1028.
With the help of mathematical expression explain the effect of following noises on image and suggest filters to remove them
a) Gaussian noise
b) Salt and Pepper noise
From the given gray level values histogram, enhance the image using histogram equalization
| Gray Levels | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| No of pixels | 300 | 500 | 1000 | 1500 | 200 | 1500 | 550 | 0 |
Differentiate between image restoration and image enhancement.
Define ideal low pass filter. Under what condition does Butterworth low pass filter become an ideal low pass filter.
Explain about image compression standards
Write short notes on:
a) Feature Extraction
b) Mach Band effect
Attempt any TWO questions
[2x10=20]Define DFT and EFT. Prove that both the 2-D continuous and discrete Fourier transforms are linear operations.
Define basic relationship between pixels. Draw the functional block diagram of image compression system and explain the purpose of each block.
Explain region growing, splitting and merging with suitable example.