from PIL import Image
import numpy as np

# 读取文件中的坐标
with open('white_coords.txt') as f:
    lines = f.readlines()

coordinates = [tuple(map(int, line.strip().split(','))) for line in lines]

# 获取坐标的最大值和最小值来确定图像的大小
max_x = max(coordinates, key=lambda x: x[0])[0]
max_y = max(coordinates, key=lambda x: x[1])[1]

# 创建一个全黑的图像
img = Image.new('L', (max_x+1, max_y+1), 'black')
pixels = img.load()

# 将文件中的坐标点设为白色
for x, y in coordinates:
    pixels[x, y] = 255

# 保存图像
img.save('output_image.png')