B.TECH - Semester 6 digital image processing Question Paper 2021 (dec)
Practice authentic previous year university questions for better exam preparation.
Sample Questions
- Find the DCT of the sequence $x(n)=\{5,10,15,20\}$.
- State and prove any two properties of 2D FT.
- Define Walsh transform.
- Explain applications of image processing.
- Distinguish between image enhancement and image restoration. Give an example for each.
- Explain how low pass filtering can be performed using frequency method.
- What are the steps involved in homomorphic filtering?
- Generate atleast 2 geometrical shapes other than rectangle and square and specify the following (a) Chain code 4D and 8D
- Generate atleast 2 geometrical shapes other than rectangle and square and specify the following (b) Shape number.
- How gray scale morphology differs from binary morphology?
- What is edge detection? Briefly describe about the types of edge detection operations. $$ (10 \times 4=40 \text { Marks }) $$ Answer any two questions from each module. Each question carries 10 marks.
- State and prove 2D sampling theorem in detail.
- Explain Karhunen-Loeve transforms with given matrix $x(m, n)$. Also give their properties. $$ x(m, n)=\left[\begin{array}{ll} 4 & 1 \\ 2 & 3 \end{array}\right] $$
- (a) Draw and explain the elements of digital image processing.
- (b) How would you explain Gray scale and Color Images?
- Give the mathematical expression for a Weiner filter. State the advantages and disadvantages over an inverse filter.
- Apply histogram equalization to the following image segment $\left[\begin{array}{llllll}5 & 5 & 5 & 5 & 5 & 5 \\ 2 & 3 & 3 & 5 & 5 & 5 \\ 4 & 3 & 3 & 4 & 4 & 3 \\ 4 & 3 & 3 & 4 & 5 & 5 \\ 4 & 4 & 4 & 4 & 4 & 4\end{array}\right]$.
- What is the importance of image enhancement in image processing? Explain any three point processing techniques implemented in image processing.
- Why are images compressed? Discuss the techniques for image compression?
- Briefly explain different types of thresholding techniques used in image segmentation.
- The input and structuring elements are shown below. Perform erosion and dilation of the input picture. Input | 0 | 1 | 0 | | :--- | :--- | :--- | | 0 | 1 | 0 | | 0 | 1 | 1 | Structuring Element $$ (6 \times 10=60 \text { Marks }) $$