JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III DIGITAL IMAGE PROCESSING Previous Question Paper (February - 2023 - R16)
Note: i) Question paper consists of Part A, Part B. ii) Part A is compulsory, which carries 25 marks. In Part A, Answer all questions. iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
List the steps involved in digital image processing.
Answer
- Image Acquisition
- Image Enhancement
- Image Restoration
- Color Image Processing
- Wavelets and Multi-resolution Processing
- Compression
- Morphological Processing
- Segmentation
- Representation and Description
- Object Recognition
Write the properties of Hadamard transform.
Answer
- It is a real, symmetric, and orthogonal transform.
- The basis functions consist only of values +1 and -1.
- It requires no multiplications, only additions and subtractions, making it computationally efficient.
- It possesses energy compaction properties similar to the Discrete Cosine Transform.
What is Image Negative?
Answer
Sign in to view the complete answer paper.
Illustrate with examples for linear and nonlinear filters?
Answer
Sign in to view the complete answer paper.
What is the principle of inverse filtering?
Answer
Sign in to view the complete answer paper.
What are the three methods of estimating the degradation function?
Answer
Sign in to view the complete answer paper.
State the conditions for Region splitting and Merging.
Answer
Sign in to view the complete answer paper.
What are the factors affecting the accuracy of Region growing?
Answer
Sign in to view the complete answer paper.
Define compression ratio.
Answer
Sign in to view the complete answer paper.
What is the need for compression?
Answer
Sign in to view the complete answer paper.
Part B
Assess image quantization and sampling and their importance and need in digital image processing.
Answer
Sign in to view the complete answer paper.
Explain Walsh Transform with suitable equations.
Answer
Sign in to view the complete answer paper.
Estimate the constraints of histogram equalization and technique of histogram processing in detail.
Answer
Sign in to view the complete answer paper.
Classify the performance of the following sharpening filters: a) Ideal HPF b) Butterworth HPF c) Gaussian HPF
Answer
Sign in to view the complete answer paper.
Derive a wiener filter for image restoration and specify its advantages over the inverse filter.
Answer
Sign in to view the complete answer paper.
Develop the least mean square filter in image restoration and derive the necessary equations.
Answer
Sign in to view the complete answer paper.
Apply the Laplacian operator for the detection of isolated points and lines in image segmentation.
Answer
Sign in to view the complete answer paper.
Explain two important morphological operations opening and closing with examples.
Answer
Sign in to view the complete answer paper.
Design a coder which a source emits letters from an alphabet A={k1,k2,k3,k4,k5} with probabilities P(k1)=P(k3)=0.2, P(k2)=0.4, P(k4)= P(k5)=0.1, entropy = 2.122bits/symbol. Find a Huffman code for this source and the average length of the code and its redundancy and compare it with Binary code.
Answer
Sign in to view the complete answer paper.
Transform Based Compression
Answer
Sign in to view the complete answer paper.
JPEG Standards.
Answer
Sign in to view the complete answer paper.