54110-mt----image And Video Processing

NR

Code No: 54110/MT M.Tech. – I Semester Supplementary Examinations, September, 2008 IMAGE AND VIDEO PROCESSING (Embedded Systems) Time: 3hours

Max. Marks:60 Answer any FIVE questions All questions carry equal marks ---

1.a) b)

Explain the process of image with a neat block diagram. From the histogram, what type of characteristics of an image can be obtained?

2.a)

Explain the operation of smoothing filter and how it is different from frequency domain filter? Explain how inverse filter is used to restore the image and what are drawbacks of it?

b) 3.a)

b)

Explain the terms with respect to image: i) Dilation and erosion ii) Opening & closing iii) Hit or miss transforms. Explain the difference between error free and lossy compression of an image with suitable examples.

4.a) b)

Explain how edge can be detected in an image? What is segmentation? Explain the principle of region based segmentation.

5.a) b)

What are the various specification for color video formation. Explain the process of capturing video.

6.a)

Explain how a video signal can be sampled and compare it with other sampling methods. Explain the camera model for video and compare it with image camera model.

b)

Contd…2

Code No: 54110/MT

7.a) b) 8.a) b)

::2::

What is the block matching algorithm and how is it used for 2 – D motion estimation? Compare region based and pixel based motion estimation methods. What is the difference between scalar & vector quantization and what type of quantization is used for video coding? What is wavelet? Explain how a wavelet transform is used for video coding? *****