将数组转换为图像

Question

我有一个由0和1组成的64*64数组。如何将此数组转换为图像并保存？

from PIL import Image
img = Image.fromarray(data , 'RGB') // 
img.save('my.png')
img.show()

'去除RGB并没有给我期望的结果，全1数组也变成了黑色'

上述代码出现了错误，我无法进行转换，如果我想将图像降低分辨率到16*16，应该如何转换？

- Narendra Modi

Answer 1

from PIL import Image

import random
data = [random.randint(0, 1) for i in range(64 * 64)]

img = Image.new('1', (64, 64))
img.putdata(data)
img.save('my.png')
img.show()

- Simon J. Liu

---

我的代码里这个不起作用。 - cherry

Answer 2

from PIL import Image
import numpy as np
from random import randint


# create random array
def create_arr(width, height):
    bin_array = np.zeros((width, height), 'uint8')
    for x in xrange(0, width):
        for y in xrange(0, height):
            bin_array[x, y] = randint(0, 1)
    return bin_array

# write array to img
def create_img(width, height, bin_array):
    rgb_array = np.zeros((width, height, 3), 'uint8')
    for x in xrange(0, width):
        for y in xrange(0, height):
            rgb_array[x, y, 0] = bin_array[x, y] * 255 #R
            rgb_array[x, y, 1] = bin_array[x, y] * 255 #G
            rgb_array[x, y, 2] = bin_array[x, y] * 255 #B

    img = Image.fromarray(rgb_array)
    img.save('img.jpeg')

# create array
bin_array = create_arr(64, 64)
# write bin_array to img
create_img(64, 64, bin_array)

- IvanB