python渐变色代码_Python 生成纯色或渐变色图片

1.问题或需求描述：

Python 生成纯色或渐变色图片

2.解决方法或原理：

python 代码

import numpy as np

from PIL import Image

def RGB(r,g,b): return (r,g,b)

def Make_img_data(width, height, rgb):

'''Make image data'''

result = np.zeros((height, width, 3), dtype=np.uint8)

for i, v in enumerate(rgb):

result[:,:,i] = np.tile(np.linspace(v, v, width), (height, 1))

return result

def Make_gradation_img_data(width, height, rgb_start, rgb_stop, horizontal=(True, True, True)):

'''Make gradation image data'''

result = np.zeros((height, width, 3), dtype=np.uint8)

for i, (m,n,o) in enumerate(zip(rgb_start, rgb_stop, horizontal)):

if o:

result[:,:,i] = np.tile(np.linspace(m, n, width), (height, 1))

else:

result[:,:,i] = np.tile(np.linspace(m, n, width), (height, 1)).T

return result

MakeImg = lambda width, height, rgb: Image.fromarray(