python绘制字符画视频的示例代码

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 += '\r\n' #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