Upload cv.py

cv.py

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+import cv2
+  
+# Import the image
+file_name = "gfg_black.png"
+  
+# Read the image
+src = cv2.imread(file_name, 1)
+  
+# Convert image to image gray
+tmp = cv2.cvtColor(src, cv2.COLOR_BGR2GRAY)
+  
+# Applying thresholding technique
+_, alpha = cv2.threshold(tmp, 0, 255, cv2.THRESH_BINARY)
+  
+# Using cv2.split() to split channels 
+# of coloured image
+b, g, r = cv2.split(src)
+  
+# Making list of Red, Green, Blue
+# Channels and alpha
+rgba = [b, g, r, alpha]
+  
+# Using cv2.merge() to merge rgba
+# into a coloured/multi-channeled image
+dst = cv2.merge(rgba, 4)
+  
+# Writing and saving to a new image
+cv2.imwrite("gfg_white.png", dst)