大蟒蛇python教程共享python绘制字符画视频的示例代码

目录

•  读取视频
• 转为字符
• 动画

  import imageio  import numpy as np  import matplotlib.pyplot as plt  video = imageio.get_reader('test.mp4')  imgs = []  for img in video:      imgs.append(np.mean(img,2))  plt.imshow(imgs[0])  plt.show()  

  #将图像宽度缩小至width  from itertools import product   #用于循环嵌套  def resizeimg(img,w,h=none):      m,n = img.shape      if n<w:          return img      if not h:          h = int(m*w/n)      im = np.zeros([h,w])      rw,rh = n/w,m/h         #缩放比例      dw,dh = int(rw),int(rh) #取均值的步长      for i,j in product(range(h),range(w)):          i,j = int(i*rh),int(j*rw)          im[i,j] = np.mean(img[i:i+dh,j:j+dw])      return im  # 测试一下  im = resizeimg(imgs[0],160)  plt.imshow(im)  plt.show()  

  pixels = "▇圞國图囜ⒶⒷⒸb8&wmzo0qjx@%&jfoavunxr#t/|()1{}[]?-_+~<>i!li;:,"^`'. ^`'. " #用于映射的字符  def im2txt(img):      im = np.floor(img/255*len(pixels)).astype(int)      txts = ""      for line in im:          txts += "".join([pixels[i] for i in line])          txts += 'rn'    #像素换行时文本也要换行      return txts  #测试  txt = im2txt(im)  print(txt)  

  >pip install "curses-2.2.1+utf8-cp310-cp310-win_amd64.whl"  

  if __name__ == "__main__":      video = imageio.get_reader('test.mp4')      txts = []      # 生成字符画      for img in video:          im = resizeimg(np.mean(img,2),120,30)          txts.append(im2txt(im))        # 初始化屏幕      scr = curses.initscr()      scr.timeout(40)     #每次等待键盘输入的时间为40ms      #scr.      for txt in cycle(txts):          scr.addstr(0,0,txt)          scr.border(0)          scr.refresh()          #curses.delay_output(25)          if scr.getch()==27: #如果按下`esc`则退出`              break