diff --git a/实验四/img.jpg b/实验四/img.jpg
new file mode 100644
index 0000000..9350c99
Binary files /dev/null and b/实验四/img.jpg differ
diff --git a/实验四/test1.py b/实验四/test1.py
new file mode 100644
index 0000000..7abbec6
--- /dev/null
+++ b/实验四/test1.py
@@ -0,0 +1,10 @@
+import cv2 as cv
+
+img = cv.imread('img.jpg')
+
+img_blur = cv.blur(img, (5, 5))
+
+cv.imshow('img', img)
+cv.imshow('img_blur', img_blur)
+cv.waitKey(0)
+cv.destroyAllWindows()