How Do You Generate an Image Where Each Pixel Is a Random Color in Python
I'm Trying to Make an Image with a Random Color for Each Pixel Then Open a Window to See the Image. Import Pil, Random Import Matplotlib. Pyplot as Plt Import...
I'm trying to make an image with a random color for each pixel then open a window to see the image.
import PIL, random
import matplotlib.pyplot as plt
import os.path
import PIL.ImageDraw
from PIL import Image, ImageDraw, ImageFilter
im = Image.new("RGB", (300,300))
for r in range(0,300):
for c in range(0,300):
re = random.randint(0, 255)
gr = random.randint(0, 255)
bl = random.randint(0, 255)
im[r][c]=[re,gr,bl]
im.show()
14 bl = random.randint(0, 255)
---> 15 im[r][c]=[re,gr,bl]
16 im.show()
TypeError: 'Image' object does not support indexing
3 Answers
You can use numpy.random.randint to assemble the required array efficiently, in a single line.
import numpy as np
from PIL import Image
# numpy.random.randint returns an array of random integers
# from low (inclusive) to high (exclusive). i.e. low <= value < high
pixel_data = np.random.randint(
low=0,
high=256,
size=(300, 300, 3),
dtype=np.uint8
)
image = Image.fromarray(pixel_data)
image.show()
Output:
First create your numpy array and then put it into PIL
import numpy as np
from random import randint
from PIL import Image
array = np.array([[[randint(0, 255),randint(0, 255),randint(0, 255)]] for i in range(100)])
array = np.reshape(array.astype('uint8'), (10, 10, 3))
img = Image.fromarray(np.uint8(array.astype('uint8')))
img.save('pil_color.png')
this worked for me
The PIL Image is an Image object, into which you can't simply inject those values to the specified pixel. Instead, convert to an array and then show it as PIL image.
import random
import numpy as np
from PIL import Image
im = Image.new("RGB", (300,300))
im = np.array(im)
for r in range(0,300):
for c in range(0,300):
re = random.randint(0, 255)
gr = random.randint(0, 255)
bl = random.randint(0, 255)
im[r][c]=[re,gr,bl]
img = Image.fromarray(im, 'RGB')
img.show()
Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.
