Work this question manually and show the solution steps. For the image below, compute a frequency table showing each gray level and the corresponding count. Then, compute the means and standard deviations for background and foreground for each threshold value. Then, determine the optimal Otsu's threshold. 34 12 77 222 3 2222222 23 23 199 199 222 222 77 34 45 45 45 45 45 12 12 77 12 12 222 222 222 3 199 3 77 77 222 77 77 77 77 23 65 65 65 77 199 199 199 199 199 222 222 2 222 12 12 12 THREE THREE 199 77 77 22 3