python spyder 画手绘风出现 invalid syntax 问题
from PIL import Image
import numpy as np
a = np.asarray(Image.open("D:/data/ipython/LiuYifei.jpg").convert('L').astype('float')
depth = 10.#虚拟深度值
grad = np.gradient(a)#去图像灰度的梯度值
grad_x, grad_y = grad #分别取横纵图像的梯度值
grad_x = grad_xdepth/100.
grad_y = grad_ydepth/100.
A = np.sqrt(grad_x2 + grad_y2 + 1.)
uni_x = grad_x/A
uni_y = grad_y/A
uni_z = 1./A
vec_el = np.pi/2.2 #光源的俯视角度，弧度值
vec_az = np.pi/4. #光源的方位角度，弧度值
dx = np.cos(vec_el)*np.cos(vec_az) #光源对X 轴我的影响
dy = np.cos(vec_el)*np.sin(vec_az) #光源对Y 轴的影响
dz = np.sin(vec_el) #光源对z 轴的影响
b = 255*(dxuni_x + dyuni_y + dz*uni_z) #光源归一化
b = b.clip(0,255)
im = Image.fromarray(b.astype('uint8')) #重构图像
im.save("D:\data\ipython\lyfHD.jpg")
