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MTCD-301 (A)
M.E/M.Tech., III Semester
Examination, November 2023
Image Processing and Computer Vision
Time: Three Hours
Note:
i) Attempt any five questions.
ii) All questions carry equal marks.
Explore the concept of an image and delve into its methods of representation. Provide insights into the diverse categories of images based on their respective representation techniques.
Discuss the interpretation of the frequency domain resulting from the Fourier Transform. How do high and low-frequency components correspond to features in the spatial domain explain?
Define the Convolution Theorem as it relates to the Fourier Transform. How does convolution in the spatial domain correspond to multiplication in the frequency domain? Explain.
Discuss how Fourier Transform is applied in the design and analysis of filters for image processing? Provide examples of specific filters and their impact on images.
Explain how stereo vision is utilized for depth estimation. Define the concept of disparity and discuss its relationship with depth information.
Discuss the importance of camera calibration in multiple view geometry. Explain the role of intrinsic parameters in transforming 3D world coordinates to 2D image coordinates.
Define epipolar lines and their role in stereo vision. How are epipolar lines used in establishing correspondences between the left and right images?
Explain the significance of non-maximum suppression in the Canny edge detection process. How does it contribute to the identification of edge points?
Explain the concept of the Laplacian of Gaussian (LOG) operator for edge detection. How does it combine smoothing and second-order differentiation?
Discuss the impact of the standard deviations in the two Gaussian kernels used in the Difference of Gaussians operator. How do these parameters influence the scale of edges detected?
Explain the significance of the bin size in orientation histograms. How does the choice of bin size impact the sensitivity and granularity of the extracted features?
Compare and contrast orientation histograms with other feature descriptors such as SIFT, SURF and HOG.
Explore strategies for handling image noise in the region growing. How can the algorithm be adapted to minimize the impact of noise on segmentation outcomes?
Explain the role of thresholding in edge-based segmentation. How are pixel intensity gradients or edge strength values used to determine edge boundaries?
Explain common techniques used for background subtraction, such as frame differencing and Gaussian mixture models. Discuss the advantages and limitations of each technique.
How color image is represented? What do we understand by the term "Color Space"? List some of the popular color spaces used for color image representations.