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Image Segmentation Marks: 1 5 Q 6 . Thresholding is a basic step to convert a gray scaled image into a binary image using a

Image Segmentation
Marks: 15
Q6. Thresholding is a basic step to convert a gray scaled image into a binary image using a specific threshold value. To find this threshold value is the most critical part. Assume that we have designed a basic algorithm to calculate adaptive threshold T. Algorithm for computing T is
Use initial threshold to put input image gray levels into two bins (classes)
Compute Global mean (MG) for whole image, local means (m1 and m2) and scatters and (:S2} for both bins
Compute between class mean (MB) and scatter (SB) using ?abs(m1-m2) and abs (S1-S2)
Compute new T using T=MB+SB
Repeat steps (1-4) to find such T which maximizes the product of MB and SB
You are given a 55 image in fig.3. Assume initial T=100. Run one iteration of above mentioned algorithm to find T and draw binary image after first iteration. Show all steps of your processing.
\table[[10,70,110,78,115],[210,45,51,51,65],[209,245,187,71,35],[10,195,205,199,201],[10,Figure-3,55,65,]]
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