# DIGITAL IMAGE PROCESSING

AI and Robotics

Nov 6, 2013 (4 years and 8 months ago)

214 views

DIGITAL IMAGE PROCESSING

M
ax Time:

2 Hrs.

Max Marks: 50

Q1)

W
hich process is applied on image1 to obtain image2?

image1 image2

Q2)

How histogram equalization is performed?

Q3)

Name any three standards

(digital/analog) and describe briefly
?

Q4)

Apply
3×3

median filter upon the image given below.

Q5)

Plot histogram of the following 5×5 subimage given

below.

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DIGITAL IMAGE PROCESSING

Q6)

Consider the image segment shown below

Let V={0, 1} and compute the lengths of the shortest 4
-
, 8
-

path between p and q. If a particular
pat
h does not exist between these two points, explain why.

Repeat for V={1, 2}.

3 1 2 1 (q)

2 2 0 2

1 2 1 1

(p) 1 0 1 2

Q7)

A common measure of transmission for digital data is the baud rate (number of bits
transmitted per second). Generally, transm
ission is accomplished in packets consisting of a start
bit, a byte (8 bits) of information, and a stop bit. Using these facts answer the following.

How many minutes would it take to transmit 1000*1000 image with 256 gray levels
using a 56K modem?

What wou
ld be the time at 750K baud?

Q8)

How negative values in the image subtraction
result are treated? How values
-
256 to 256
can be displayed over 8 bit display?

Q9)

Given an image and a filter mask. What will happen when you apply this filter to the image?

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DIGITAL IMAGE PROCESSING

Q10)

Which operation is performed on the input image to produce output image?

Input image output image

Q11)

Differentiat
e between boundary and edge.

Q12)
List True/False

Computer vision and image processing both use image analysis methods.

Gamma correction is used to compensate for the fact the imaging equipment reacts according
to a power
-
law equation.

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DIGITAL IMAGE PROCESSING

The rods in the huma
n eye have spatial capability due to the fact that each sensor is tied to an
individual nerve.

In a range image, the brightness values correspond to the amount of energt in the infrared.

Optical illusions are created when the brain completes missing spatia
l information.

Q13)

Is the median filter a linear space
-
invariant operator? Would the median filter be
appropriate for removing uncorrelated white Gaussian noise from an image?

Q14)

What is the difference between gray
-
level slicing and bit
-
plane slicing.

Q
15)

Briefly describe the fundamental steps in an image processing system developed for
image recognition application.