# img2circle.py
from PIL import Image
# 图像圆形裁剪
def img_author(fpath):
ima = Image.open(fpath)
size = ima.size
# 因为是要圆形,所以需要正方形的图片
r2 = min(size[0], size[1])
if size[0] != size[1]:
ima = ima.resize((r2, r2), Image.ANTIALIAS)
# 最后生成圆的半径
r3 = int(r2 / 2)
# imb = Image.new('RGB', (r3 * 2, r3 * 2), (255, 255, 255, 0))
imb = Image.new('RGBA', (r3 * 2, r3 * 2)) # 透明底色
pima = ima.load() # 像素的访问对象
pimb = imb.load()
r = float(r2 / 2) # 圆心横坐标
for i in range(r2):
for j in range(r2):
lx = abs(i - r) # 到圆心距离的横坐标
ly = abs(j - r) # 到圆心距离的纵坐标
l = (pow(lx, 2) + pow(ly, 2)) ** 0.5 # 三角函数 半径
if l <= r3:
pimb[i - (r - r3), j - (r - r3)] = pima[i, j]
return imb
cir_img = img_author('wh_transsion_profile_manga.png')
cir_img.save('wh_transsion_profile_manga_circle.png')