Algorithm 1: Calculate Image Blur Using Laplacian Algorithm

Input: Image Output: Image Blur 1: function CALCULATE_IMAGE_BLUR(image) 2:           image ← LOAD_IMAGE(image) 3:           (h, w) ← DIMENSIONS(image) 4:           sigma ← 1.0 5:           gaussian_kernel_size ← 3 6:           gaussian_kernel ←GAUSSIAN_KERNEL(gaussian_kernel_size, sigma) 7:           smoothed_image ← CONVOLVE(image, gaussian_kernel, (h, w)) 8:           laplacian_kernel ← [[0, −1, 0], [−1, 4, −1], [0, −1, 0]] 9:           laplacian_image ← CONVOLVE(smoothed_image, laplacian_kernel, (h, w)) 10:         sum_pixels ← 0 11:         for each pixel in laplacian_image do 12:              sum_pixels ← sum_pixels + pixel 13:         mean ← sum_pixels/(h * w) 14:         variance_sum ← 0 15:         for each pixel in laplacian_image do 16:              variance_sum ← variance_sum + (pixel − mean)^2 17:         Image Blur ← variance_sum/(h * w) 18:         return Image Blur 19: end function