from PIL import Image import numpy as np 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 depth = 10. # (0-100) im = Image.open('C:/Users/25764/Pictures/2020-03/IMG_20200324_180950.jpg').convert('L') a = np.asarray(im).astype('float') grad = np.gradient(a) #取图像灰度的梯度值 grad_x, grad_y = grad #分别取横纵图像梯度值 grad_x = grad_x*depth/100. grad_y = grad_y*depth/100. dx = np.cos(vec_el)*np.cos(vec_az) #光源对x 轴的影响 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 A = np.sqrt(grad_x**2 + grad_y**2 + 1.) uni_x = grad_x/A uni_y = grad_y/A uni_z = 1./A a2 = 255*(dx*uni_x + dy*uni_y + dz*uni_z) #光源归一化 a2 = a2.clip(0,255) im2 = Image.fromarray(a2.astype('uint8')) im2.save('C:/Users/25764/Pictures/2020-03/tup.jpg')
![](https://img2020.cnblogs.com/blog/1966851/202005/1966851-20200506190211951-1486280848.jpg)
![](https://img2020.cnblogs.com/blog/1966851/202005/1966851-20200506190402355-1854151725.jpg)