python如何将视频变成漫画？

可以将视频每一帧当做图片进行漫画处理，具体的图片转漫画的python代码如下：

# -*- coding: utf-8 -*-
import cv2
from PIL import Image, ImageOps, ImageFilter
# 转换成漫画风格
def toCarttonStyle(picturePath,outpath):
 # 设置输入输出路径和文件名称
 imgInput_FileName = picturePath
 imgOutput_FileName = picturePath.split(".")[0] + '_cartoon.' + picturePath.split(".")[1]

 # 属性设置
 num_down = 2 # 缩减像素采样的数目
 num_bilateral =7 # 定义双边滤波的数目
 # 读取图片
 img_rgb = cv2.imread(imgInput_FileName)
 # 用高斯金字塔降低取样

 img_color = img_rgb
 for _ in range(num_down):
     img_color = cv2.pyrDown(img_color)

 # 重复使用小的双边滤波代替一个大的滤波

 for _ in range(num_bilateral):
    img_color = cv2.bilateralFilter(img_color, d=9, sigmaColor=0.1, sigmaSpace=0.01)

 # 升采样图片到原始大小

 for _ in range(num_down):
    img_color = cv2.pyrUp(img_color)

 # 转换为灰度并且使其产生中等的模糊

 img_gray = cv2.cvtColor(img_rgb, cv2.COLOR_RGB2GRAY)

 img_blur = cv2.medianBlur(img_gray, 7)

 # 检测到边缘并且增强其效果

 img_edge = cv2.adaptiveThreshold(img_blur, 255,

     cv2.ADAPTIVE_THRESH_MEAN_C,

     cv2.THRESH_BINARY,

     blockSize=9,

     C=2)


 # 算法处理后，照片的尺寸可能会不统一

 # 把照片的尺寸统一化

 height=img_rgb.shape[0]
 width = img_rgb.shape[1]
 img_color=cv2.resize(img_color,(width,height))

 # 转换回彩色图像
 img_edge = cv2.cvtColor(img_edge, cv2.COLOR_GRAY2RGB)
 img_cartoon = cv2.bitwise_and(img_color, img_edge)



 # 保存转换后的图片
 cv2.imwrite(outpath, img_cartoon)



# 透明度转换 素描转换的一部分

def dodge(a, b, alpha):
 # alpha为图片透明度
 return min(int(a * 255 / (256 - b * alpha)), 255)


# 图片转换为素描
def toSketchStyle(picturePath, outpath,blur=25, alpha=1.0):

 # 设置输入输出路径和文件名称

 imgInput_FileName = picturePath
 imgOutput_FileName = picturePath.split(".")[0] + '_Sketch.' + picturePath.split(".")[1]

 # 转化成ima对象
 img = Image.open(picturePath)
 # 将文件转成灰色
 img1 = img.convert('L')
 img2 = img1.copy()
 img2 = ImageOps.invert(img2)

 

 # 模糊度
 for i in range(blur):

    img2 = img2.filter(ImageFilter.BLUR)

 width, height = img1.size

 for x in range(width):

    for y in range(height):

     a = img1.getpixel((x, y))
    
     b = img2.getpixel((x, y))

    img1.putpixel((x, y), dodge(a, b, alpha))

 

 # 保存转换后文件

 img1.save(outpath)


 
print("<img src='demoimg.png' />原图")
toCarttonStyle("/data/wwwroot/default/demoimg.png","/data/wwwroot/default/Data/testimg111111.png")
print("<img src='Data/testimg111111.png?2321231312312312123312' />漫画")
toSketchStyle("/data/wwwroot/default/demoimg.png","/data/wwwroot/default/Data/testimg22222.png")
print("<img src='Data/testimg22222.png?12311112311212312331231' />素描")