# 深入理解图片成像原理以及数据背后含义之后制作一个小程序
# temp.py
from PIL import Image import numpy as np # 图像手绘效果 a = np.asanyarray(Image.open(r'D:\学习\作业\趣图\01.jpg').convert('L')).astype('float') depth = 10 grad = np.gradient(a) grad_x,grad_y = grad grad_x = grad_x*depth/100 grad_y = grad_y*depth/100 A = np.sqrt(grad_x**2 + grad_y**2 + 1.) uni_x = grad_x/A uni_y = grad_y/A uni_z = 1./A vec_el = np.pi/2.2 vec_az = np.pi/4. dx = np.cos(vec_el) * np.cos(vec_az) dy = np.cos(vec_el) * np.sin(vec_az) dz = np.sin(vec_el) b = 255 * (dx*uni_x + dy*uni_y + dz*uni_z) b = b.clip(0,255) im = Image.fromarray(b.astype('uint8')) im.save(r'D:\学习\作业\趣图\03.jpg')
# console
runfile('C:/Users/cz/.spyder-py3/temp.py', wdir='C:/Users/cz/.spyder-py3')
# 修改之前
# 修改之后
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