Pillow教程(二)

图片加上文字

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'

#第一个参数是加入字体的坐标
#第二个参数是文字内容
#第三个参数是字体格式
#第四个参数是字体颜色
draw.text( (60,100) , u'萌萌哒' ,font = myfont , fill = fillcolor )
im.save('tu_word.jpg')

图片加上数字

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)

#在图上画一个圆,ellipse参数分别为 左上角的坐标，右下角的坐标
#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')

将图片转化成字符画

#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)

 #读取图像文件
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):
	# 转为灰度图像
	img = img.convert('L')
	txt = ''
	for y in range(img.size[1]):
		for x in range(img.size[0]):
			# 获取每个坐标像素点的灰度
			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)

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