Python中彩色图像的渐变

from PIL import Image, ImageDraw

width = 500  # 图像宽度
height = 500  # 图像高度
image = Image.new("RGB", (width, height))

draw = ImageDraw.Draw(image)

start_color = (255, 0, 0)  # 起始颜色为红色
end_color = (0, 0, 255)  # 结束颜色为蓝色

for y in range(height):
    for x in range(width):
        # 计算当前位置的渐变比例
        ratio = x / width
        # 根据渐变比例计算当前位置的颜色
        r = int(start_color[0] * (1 - ratio) + end_color[0] * ratio)
        g = int(start_color[1] * (1 - ratio) + end_color[1] * ratio)
        b = int(start_color[2] * (1 - ratio) + end_color[2] * ratio)
        # 在当前位置绘制像素
        draw.point((x, y), (r, g, b))

image.save("gradient.png")