缩进

test/2024,9,23/homework.py

@@ -2,36 +2,46 @@ import cv2 as cv
 import numpy as np
 
 # 1
-img=cv.imread("sample.jpg",cv.IMREAD_GRAYSCALE)
-img2=cv.imread('sample.jpg',cv.IMREAD_GRAYSCALE)
+img = cv.imread("sample.jpg", cv.IMREAD_GRAYSCALE)
+img2 = cv.imread('sample.jpg', cv.IMREAD_GRAYSCALE)
+
+
 # 2
-def draw_circle(event,x,y,flags,param):
-    if event==cv.EVENT_LBUTTONDOWN:
-        cv.circle(img,(x,y),10,0,-1)
-#4
-alpha=0.3
-beta=80
+def draw_circle(event, x, y, flags, param):
+    if event == cv.EVENT_LBUTTONDOWN:
+        cv.circle(img, (x, y), 10, 0, -1)
+
+
+# 4
+alpha = 0.3
+beta = 80
+
+
 def updateAlpha(x):
-    global alpha,img,img2
-    alpha=cv.getTrackbarPos('Alpha','modify_sample')
-    alpha=alpha*0.01
-    img=np.uint8(np.clip((alpha*img2+beta),0,255))
+    global alpha, img, img2
+    alpha = cv.getTrackbarPos('Alpha', 'modify_sample')
+    alpha = alpha * 0.01
+    img = np.uint8(np.clip((alpha * img2 + beta), 0, 255))
+
+
 def updateBeta(x):
-    global beta,img,img2
-    beta=cv.getTrackbarPos('Beta','modify_sample')
-    img=np.uint8(np.clip((alpha*img2+beta),0,255))
-#3
+    global beta, img, img2
+    beta = cv.getTrackbarPos('Beta', 'modify_sample')
+    img = np.uint8(np.clip((alpha * img2 + beta), 0, 255))
+
+
+# 3
 cv.namedWindow('modify_sample')
-cv.createTrackbar('Alpha','modify_sample',0,300,updateAlpha)
-cv.createTrackbar('Beta','modify_sample',0,255,updateBeta)
-cv.setTrackbarPos('Alpha','modify_sample',100)
-cv.setTrackbarPos('Beta','modify_sample',10)
-cv.setMouseCallback('modify_sample',draw_circle)
-while(1):
-    cv.imshow('modify_sample',img)
-    pressedKey=cv.waitKey(5)
+cv.createTrackbar('Alpha', 'modify_sample', 0, 300, updateAlpha)
+cv.createTrackbar('Beta', 'modify_sample', 0, 255, updateBeta)
+cv.setTrackbarPos('Alpha', 'modify_sample', 100)
+cv.setTrackbarPos('Beta', 'modify_sample', 10)
+cv.setMouseCallback('modify_sample', draw_circle)
+while (1):
+    cv.imshow('modify_sample', img)
+    pressedKey = cv.waitKey(5)
     # 5
-    if pressedKey==ord('q'):
+    if pressedKey == ord('q'):
         break
-    if pressedKey==ord('s'):
-        cv.imwrite('modified_sample.jpg',img)
+    if pressedKey == ord('s'):
+        cv.imwrite('modified_sample.jpg', img)