代码舞蹈

微信公众号：快餐热点，为您每天提供全美新闻,作者微信wlagooble

基本的思路如下：

1. 视频文件转图片

2.对图片处理，生成字符画

3. 合成字符画到视频

主要代码如下，需要修改的为路径，如果需要生成多种不同的效果，可以根据像素的值进行个性化设计。

# coding:utf-8
# [email protected]
# video2img
# Dec,7,2017
import cv2
vc=cv2.VideoCapture("~/video.mp4")
c=1  
if vc.isOpened():  
    rval,frame=vc.read()  
else:  
    rval=False  
while rval:  
    rval,frame=vc.read()
    rows, cols, channel = frame.shape
    # frame2=cv2.resize(frame,(cols/3,rows/3),fx=0,fy=0,interpolation=cv2.INTER_AREA)
    if ( c%5 == 0):                            #every 5 fps write frame to img
        cv2.imwrite(('./yourImgPath/'+str(c)+'.jpg'),frame)
        # cropped001 = frame2[0:300,300:600]   #y change from 0 to 300 x change from 300 to 600
        # cv2.imwrite('./cropped/'+str(c)+'_001.jpg',cropped001)
    c=c+1  
    cv2.waitKey(1)  
vc.release()  

#coding:utf-8
import cv2
import os
import numpy as np
from PIL import Image, ImageDraw,ImageFont
fps = 2
fourcc = cv2.VideoWriter_fourcc('M', 'J', 'P', 'G')
video_writer = cv2.VideoWriter(filename='./result.avi', fourcc=fourcc, fps=fps, frameSize=(1856,1056))
for i in range(0,6000):
    p = i
    # print(str(p)+'.png'+'233333')
    if os.path.exists('yourImgPath/'+str(p)+'.jpg'):    #判断图片是否存在
        img = cv2.imread(filename='yourImgPath/'+str(p)+'.jpg')
        cv2.waitKey(100)
        video_writer.write(img)
        print(str(p) + '.jpg' + ' done!')
video_writer.release()

#-*- coding: UTF-8 -*- 
from PIL import Image 
from PIL import ImageDraw 
from PIL import ImageFont
import matplotlib.pyplot as plt
import numpy as np
import time
 
def pic(srd_img_file_path, dst_img_file_path = None, scale = 2, sample_step = 3):
 start_time = int(time.time())
 
 #读取图片信息
 old_img = Image.open(srd_img_file_path)
 pix = old_img.load()
 width = old_img.size[0]
 height = old_img.size[1]
 print ("width:%d, height:%d" % (width, height))
 
 #创建新图片
 canvas = np.ndarray((height*scale, width*scale, 3), np.uint8)
 canvas[:, :, :] = 255
 new_image = Image.fromarray(canvas)
 draw = ImageDraw.Draw(new_image)
 
 #创建绘制对象
 font = ImageFont.truetype("consola.ttf", 10, encoding="unic")
 char_table = list('happy new year ')
 # font = ImageFont.truetype('simsun.ttc', 10)
 # char_table = list(u'新年快乐')
 
 #开始绘制
 pix_count = 0
 table_len = len(char_table)
 for y in range(height):
  for x in range(width):
   if x % sample_step == 0 and y % sample_step == 0:
    draw.text((x*scale, y*scale), char_table[pix_count % table_len], pix[x, y], font)
    pix_count += 1
 
 # 保存
 if dst_img_file_path is not None:
  new_image.save(dst_img_file_path)
 
 print("used time : %d second, pix_count : %d" % ((int(time.time()) - start_time), pix_count))
 print(pix_count)
 new_image.show()
 
 
pic("input.jpg", "output.jpg")

具体代码待添加，是在原作者的基础之上修改得到的。显示结果如下：