diff --git a/test/2024,9,10/img.png b/test/2024,9,10/img.png
index 0b766ad..3d9b7f4 100644
Binary files a/test/2024,9,10/img.png and b/test/2024,9,10/img.png differ
diff --git a/test/2024,9,10/set_alpha.py b/test/2024,9,10/set_alpha.py
index e27a7ba..02b62b0 100644
--- a/test/2024,9,10/set_alpha.py
+++ b/test/2024,9,10/set_alpha.py
@@ -7,7 +7,7 @@ img_rgba=cv.cvtColor(img,cv.COLOR_BGR2BGRA)
 # split alpha channel
 blue,green,red,alpha = cv.split(img_rgba)
 #set alpha channel
-alpha[int(alpha.shape[0]/2):alpha.shape[0],int(alpha.shape[1]/2):alpha.shape[1]]=0
+alpha[int(alpha.shape[0]/2):alpha.shape[0],int(alpha.shape[1]/2):alpha.shape[1]]=128
 # remix alpha to img_rgba
 img_rgba=cv.merge((blue,green,red,alpha))
 # show