用 OpenCV 制作庆祝武汉重启一周年短视频

hhlImg = cv2.resize(readImgFile(r'f:\pic\武汉\黄鹤楼.jpg'),(800,600))lightShowImgList = [cv2.resize(readImgFile(r'f:\pic\武汉\灯光秀_桥.jpg'),(800,600)),cv2.resize(readImgFile(r'f:\pic\武汉\灯光秀_武汉江边.jpg'),(800,600)),                    cv2.resize(readImgFile(r'f:\pic\武汉\灯光秀_一桥.jpg'),(800,600)),cv2.resize(readImgFile(r'f:\pic\武汉\灯光秀_一桥底部.jpg'),(800,600)),                    cv2.resize(readImgFile(r'f:\pic\武汉\灯光秀_一桥远景.jpg'),(800,600)),cv2.resize(readImgFile(r'f:\pic\武汉\灯光秀_远桥.jpg'),(800,600))]whImgList =  [cv2.resize(readImgFile(r'f:\pic\武汉\东湖1.jpg'),(800,600)),cv2.resize(readImgFile(r'f:\pic\武汉\东湖2.jpg'),(800,600)),                    cv2.resize(readImgFile(r'f:\pic\武汉\东湖樱园樱花.jpg'),(800,600)),cv2.resize(readImgFile(r'f:\pic\武汉\武大牌楼.jpg'),(800,600)),                    cv2.resize(readImgFile(r'f:\pic\武汉\武大牌楼远观.jpg'),(800,600)),cv2.resize(readImgFile(r'f:\pic\武汉\武大樱花2.jpg'),(800,600)),                    cv2.resize(readImgFile(r'f:\pic\武汉\武大樱园顶高拍照.jpg'),(800,600)),cv2.resize(readImgFile(r'f:\pic\武汉\武大樱园门洞.jpg'),(800,600)),                    cv2.resize(readImgFile(r'f:\pic\武汉\武大樱园入口.jpg'),(800,600)),cv2.resize(readImgFile(r'f:\pic\武汉\武大老图书馆.jpg'),(800,600))]
preImg,preTime = None,0

def lightShowImg(bg,minX, maxX,distance,lightStartPos,t):    """    实现在背景图像上添加当前散发彩色激光的处理    :param bg: 背景图像    :param minX:灯光终点的最大x坐标    :param maxX:灯光终点的最小x坐标    :param distance: 不同灯光之间的间距    :param lightStartPos: 灯光发射点    :param t: 时间t    :return: 添加了发射灯光的图像    """
    x =  (minX+int(t*200))%(maxX*2) #按时间t计算灯光终点的x坐标，该坐标可以超出背景图像范围    img = np.array(bg)    if x>maxX: #到达最大范围，需要回扫        x = 2*maxX-x    color1,color2,color3 = (255,0,0),(0,255,0),(0,0 ,255 ) #蓝、绿、红三色    cv2.line(img, lightStartPos, (x, 0), color1, 4)    cv2.line(img, lightStartPos, (x + distance, 0), color2, 4)    cv2.line(img, lightStartPos, (x - distance, 0), color3, 4)
    return img

def makeframe(t):    #生成t时刻的视频帧图像    global preImg,preTime    if t<5:#5秒片头        img = imgAddText(hhlImg,'武汉重启一周年灯光秀',64,(255,0,0),vRefPos='C')    elif t<40:#5-40秒灯光秀		minX, maxX = 200, 1200  # 灯光横向扫射范围    	lightStartPos1 = (0, 600)  # 灯光1的发射点坐标设置为左下角    	lightStartPos2 = (800, 600)  # 灯光2的发射点坐标设置为右下角        if (t-preTime)>2 or preImg is None:            img = np.array(random.choice(lightShowImgList))            preImg,preTime  = img,t        else:            img = preImg        img = lightShowImg(img, minX, maxX, 80,lightStartPos1, t)        img = lightShowImg(img, minX-100, maxX+100,48, lightStartPos2, t)        t = int((t-4)*40)%img.shape[0]        img = imgAddText(img,'热烈庆祝武汉重启一周年！',48,(0,0,255),vRefPos=-80-t,)        img = imgAddText(img, '武汉万岁！中国万岁！',48,(255,0,255),vRefPos=-t)    else:#片尾
        if (t-preTime)>2 or preImg is None:            img = np.array(random.choice(whImgList))            preImg,preTime  = img,t        else:            img = preImg        t = int((t - 39) * 20) % img.shape[0]        img = imgAddText(img,"制片：老猿Python",36,(255,255,255),vRefPos=-120-t)        img = imgAddText(img, "https://www.infoq.cn/u/laoyuanpython/publish",24,(255,255,255),vRefPos= -60-t)        img = imgAddText(img, "2021年4月8日", 24, (255,255,255), vRefPos=-t)
    return img

def buildVideoByCV():    videoMake = cv2.VideoWriter()    fourcc = cv2.VideoWriter_fourcc(*'MP4V') #https://blog.csdn.net/whudee/article/details/108689420
    fps = 12    videoMake.open(r"F:\video\lightShowCV.MP4", fourcc, fps, (800,600))    for t in range(65*fps):        img = makeframe(t*1.0/fps)        videoMake.write(img)        print(f'\r视频制作进度：{(t*100.0)/(66*fps):4.2f}%',end='')    videoMake.release()