Question

Q. 1. (a) For the following binary object, calculate area, perimeter, and centroid. (3 Points) (b) Explain briefly in plain English the morphological operations dilation, erosion, and closing. Find out the images after performing these operation on this image with 3x3 square structuring element. (2 for explanation of the operations + 4 for results = 6 Points) Q.2. (a) For the 5x5 grey level image shown in the figure here, obtain the median filtered image. (2 Points) (b) Explain why contrast stretching using a method like histogram equalization is needed. Briefly discuss how histogram equalization is performed. (1 for explanation + 2 for method = 3 Points) Q. 3 (a) For the same grey level image, compute the edge magnitude and direction at the central (shaded) pixel using Sobel operator. (2 Points) (b) Outline the steps in Canny edge detection and linking algorithm, and discuss the need for (and/or importance of) the processing done at each step. (4 Points)

          Q. 1. (a) For the following binary object, calculate area, perimeter, and centroid. (3 Points)
(b) Explain briefly in plain English the morphological operations dilation, erosion, and closing. Find out the images after performing these operation on this image with 3x3 square structuring element. (2 for explanation of the operations + 4 for results = 6 Points)

Q.2. (a) For the 5x5 grey level image shown in the figure here, obtain the median filtered image. (2 Points)
(b) Explain why contrast stretching using a method like histogram equalization is needed. Briefly discuss how histogram equalization is performed. (1 for explanation + 2 for method = 3 Points)

Q. 3 (a) For the same grey level image, compute the edge magnitude and direction at the central (shaded) pixel using Sobel operator. (2 Points)
(b) Outline the steps in Canny edge detection and linking algorithm, and discuss the need for (and/or importance of) the processing done at each step. (4 Points)

Q. 1. (a) For the following binary object, calculate area, perimeter, and centroid. (3 Points)
(b) Explain briefly in plain English the morphological operations dilation, erosion, and closing. Find out the images after performing these operation on this image with 3x3 square structuring element. (2 for explanation of the operations + 4 for results = 6 Points)

Q.2. (a) For the 5x5 grey level image shown in the figure here, obtain the median filtered image. (2 Points)
(b) Explain why contrast stretching using a method like histogram equalization is needed. Briefly discuss how histogram equalization is performed. (1 for explanation + 2 for method = 3 Points)

Q. 3 (a) For the same grey level image, compute the edge magnitude and direction at the central (shaded) pixel using Sobel operator. (2 Points)
(b) Outline the steps in Canny edge detection and linking algorithm, and discuss the need for (and/or importance of) the processing done at each step. (4 Points)

Added by Jason H.

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