From 663ed66e2fc1fc0dd33dfbfd20f190b76aeb5aa8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=A1=E5=9D=82=E6=98=B4?= <gugugulaocuchen@gmail.com>
Date: Mon, 23 Sep 2024 22:41:54 +0800
Subject: [PATCH] =?UTF-8?q?=E5=88=9D=E6=AD=A5=E5=AE=8C=E6=88=90=E7=AC=AC?=
 =?UTF-8?q?=E5=9B=9B=E9=A2=98?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 test/2024,9,23/homework.py | 21 ++++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

diff --git a/test/2024,9,23/homework.py b/test/2024,9,23/homework.py
index 3978220..73eb236 100644
--- a/test/2024,9,23/homework.py
+++ b/test/2024,9,23/homework.py
@@ -1,17 +1,32 @@
 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)
 # 2
 def draw_circle(event,x,y,flags,param):
     if event==cv.EVENT_LBUTTONDOWN:
         cv.circle(img,(x,y),10,0,-1)
-#3
-cv.namedWindow('modify_sample')
-cv.setMouseCallback('modify_sample',draw_circle)
 #4
 alpha=0.3
 beta=80
+def updateAlpha(x):
+    global alpha,img,img2
+    alpha=cv.getTrackbarPos('Alpha','image')
+    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','image')
+    img=np.uint8(np.clip((alpha*img2+beta),0,255))
+#3
+cv.namedWindow('modify_sample')
+cv.createTrackbar('Alpha','image',0,300,updateAlpha)
+cv.createTrackbar('Beta','image',0,255,updateBeta)
+cv.setTrackbarPos('Alpha','image',100)
+cv.setTrackbarPos('Beta','image',10)
+cv.setMouseCallback('modify_sample',draw_circle)
 while(1):
     cv.imshow('modify_sample',img)
     pressedKey=cv.waitKey(5)