Pillow教程(二)

圖片加上文字

from PIL import Image,ImageDraw,ImageFont

im = Image.open('tu.jpg')
draw = ImageDraw.Draw(im)

(width, height) = im.size
myfont  = ImageFont.truetype('yuanqi.ttf',size = 120)
fillcolor = 'pink'

#第一個參數是加入字體的座標
#第二個參數是文字內容
#第三個參數是字體格式
#第四個參數是字體顏色
draw.text( (60,100) , u'萌萌噠' ,font = myfont , fill = fillcolor )
im.save('tu_word.jpg')

圖片加上數字

from PIL import Image,ImageDraw,ImageFont

im = Image.open('tu.jpg')
draw = ImageDraw.Draw(im)

(width, height) = im.size
myfont  = ImageFont.truetype('yuanqi.ttf',size = 120)

#在圖上畫一個圓,ellipse參數分別爲 左上角的座標，右下角的座標
#ellipse(左上X , 左上Y , 右下X , 右下Y)
draw.ellipse((width-200, 0 ,width,200),fill="red",outline="red")   

draw.text((width-120,20 ),'5',font=myfont,fill='white')
im.save('tu_number.jpg')

將圖片轉化成字符畫

#coding:utf-8
from PIL import Image

#要索引的字符列表
ascii_char = list("$@B%8&WM#*oahkbdpqwmZO0QLCJUYXzcvunxrjft/\|()1{}[]?-_+~<>i!lI;:,\"^`'. ")
length = len(ascii_char)

 #讀取圖像文件
def readImg():
    img = Image.open('kai.png')
    (width,height) = img.size
    img = img.resize( ( int(width * 0.9) ,  int(height * 0.5) ))
    print(img.size)
    return img

def convert(img):
    # 轉爲灰度圖像
    img = img.convert('L')
    txt = ''
    for y in range(img.size[1]):
        for x in range(img.size[0]):
            # 獲取每個座標像素點的灰度
            gray = img.getpixel((x,y))
            unit = 256.0 / length
            txt += ascii_char[(int)(gray/unit)]
        txt += '\n'
    return txt

if __name__ == '__main__':
    txt = convert(readImg())
    with open('kai.txt','w') as f:
        f.write(txt)

原圖：

字符：