彩色字符画练习

from PIL import Image
from PIL import ImageDraw
from PIL import ImageFont

def getchar(num):
    char = ascii_char[int(num/256*count)]
    return char
pth = r"C:UsersYoungPicturesSaved Pictures1.jpg"
ascii_char = list("MNHQ$OC67)oa+>!:+. ")
count = len(ascii_char)
img = Image.open(pth)
wd,he = img.size
#将原图大小比例设为宽度的1/6，宽度的1/15
WIDTH , HEIGHT =wd//6,he//15
revise_img = img.resize((WIDTH,HEIGHT),Image.NEAREST)
#获取灰度图，方便获取每个像素点的灰度值，用来匹配对应的字符
gray = revise_img.convert("L")
color = []
text = ""
for h in range(HEIGHT):
    for w in range(WIDTH):
        color.append(revise_img.getpixel((w,h)))
        text +=getchar(gray.getpixel((w,h)))
        # print(gray.getpixel((w,h)))
    text+="
"
    #因为字符串每行到底都会添加一个换行符，所以为了和字符长度相等，颜色也添加一个白色，颜色可以自定义
    color.append((255,255,255))
    #新建画布
new_img = Image.new("RGB",(img.size),(255,255,255))
draw = ImageDraw.Draw(new_img)
x=y=0
#font 用默认的字体和自定义的字体，输出的彩色字符画颜色饱满度差很多，是默认的字体效果好
# font = ImageFont.truetype(r"C:WindowsFontscour.ttf",10)  #arial.ttf  cour.ttf
font = ImageFont.load_default()
#获取字符的大小，并自定义字体的高度，默认用1.37比例显示会更佳
font_w,font_h = font.getsize(ascii_char[1])
font_h= int(font_h*1.37)
for h in range(len(text)):
    if text[h] == "
":
        #如果遇到换行符，将x轴归到0为，y轴增加一个字体高度
        x = 0
        y +=font_h
    draw.text((x, y), text[h], fill=color[h],font=font)
    x +=font_w
new_img.show()
#保存到本地
# new_img.save()