#smooth sharp unsharp 
import cv2
import numpy as np

image = cv2.imread("elephant2.jpeg")
gray_image = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)

smoothed_image = cv2.GaussianBlur(gray_image, (5, 5), 0)

sharpening_kernel = np.array([[0, -1, 0],
                               [-1, 5, -1],
                               [0, -1, 0]])
sharpened_image = cv2.filter2D(gray_image, -1, sharpening_kernel)

blurred_image = cv2.GaussianBlur(gray_image, (5, 5), 0)

unsharp_image = cv2.addWeighted(gray_image, 1.5, blurred_image, -0.5, 0)

cv2.imshow("Original Image", gray_image)
cv2.imshow("Smoothed Image (Gaussian Blur)", smoothed_image)
cv2.imshow("Sharpened Image", sharpened_image)
cv2.imshow("Unsharp Masking", unsharp_image)

cv2.waitKey(0)
cv2.destroyAllWindows()