I want to convert all pixel values 0 instead of the value of 255. Pixel values are kept in Numpy array, namely x and:
x.shape = (100, 1, 256, 256)
How to manipulate arrays with the condition?
I tried the below but the error occured "ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()"
i=0 for i in x[i]: if x[i]==255: x[i] = x[i] else: x[i] ==0
x[x==255] = 0
# Repeatable randomness np.random.seed(42) # Synthesise array x = np.random.randint(0,256, (100, 1, 256, 256), np.uint8) # Count number of 255s len(np.where(x==255)) # result = 25671 # Make each 255 into 0 x[x==255] = 0 # Count number of 255s len(np.where(x==255)) # result = 0
Answered By – Mark Setchell
Answer Checked By – Senaida (AngularFixing Volunteer)