JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech IV DIGITAL IMAGE PROCESSING Previous Question Paper (November/December - 2018 - R15)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
Part A
What is Digital Image Processing?
Answer
Digital Image Processing is the process of performing operations on a digital image by means of a digital computer to improve the image quality or to extract useful information from it.
Define Walsh Transform.
Answer
The Walsh Transform is a non-sinusoidal orthogonal transform that decomposes a signal into a set of rectangular waveforms called Walsh functions, which take values of only +1 and -1. It is computationally efficient as it requires only additions and subtractions.
What is the objective of image enhancement technique?
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List the steps involved in frequency domain filtering.
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Compare Image enhancement and Restoration techniques.
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Write the drawbacks of image restoration using inverse filtering.
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List the applications of segmentation.
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What is global, Local and dynamic or adaptive threshold?
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What is image compression?
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List out the JPEG 2000 standards.
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Part B
Explain the basic concepts of sampling and quantization in the generation of digital image.
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Explain the following terms: i) Adjacency ii) Connectivity iii) Regions iv) Boundaries.
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Compare and contrast different image transform techniques.
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Find out the Slant transform matrix for N=8.
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Illustrate the histograms of basic Image types.
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Discuss any one method of an image enhancement through point operation.
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Explain image smoothing using ideal lowpass filters.
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List various approaches used in Image enhancement and then discuss any one method of it.
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Discuss in detail the image restoration using minimum mean square error filtering.
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How degradation function is estimated? Explain.
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Briefly explain the interactive image restoration.
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Explain briefly the segmentation based on thresholding.
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Discuss briefly the region based segmentation.
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Discuss in detail the following morphological operations:
Erosion
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Dilation
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What is Error Free Compression? Explain.
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Discuss briefly the Image compression using Arithmetic coding.
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Draw the functional block diagram of image compression system and explain the purpose of each block.
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