拓竹打印机获取相机图片

AI视觉网奇2026-09-02 11:39

每隔3秒截取一张图片：

python 复制代码

import cv2
import time
import os


def capture_rtsp_frames(rtsp_url, output_dir="captures", interval=3):
   
    # 创建输出目录
    os.makedirs(output_dir, exist_ok=True)

    # 打开RTSP流
    cap = cv2.VideoCapture(rtsp_url, cv2.CAP_FFMPEG)

    if not cap.isOpened():
        print("无法打开RTSP流")
        return

    # 设置RTSP传输协议为TCP
    cap.set(cv2.CAP_PROP_BUFFERSIZE, 1)  # 减少缓冲

    frame_count = 0
    last_capture_time = time.time()

    print(f"开始捕获，间隔{interval}秒...")
    print("按 Ctrl+C 停止捕获")

    try:
        while True:
            ret, frame = cap.read()

            if not ret:
                print("无法读取帧，尝试重新连接...")
                cap.release()
                time.sleep(1)
                cap = cv2.VideoCapture(rtsp_url, cv2.CAP_FFMPEG)
                continue

            current_time = time.time()

            # 检查是否到达捕获间隔
            if current_time - last_capture_time >= interval:
                # 保存图片
                timestamp = time.strftime("%Y%m%d_%H%M%S")
                filename = f"{output_dir}/capture_{timestamp}_{frame_count}.jpg"
                cv2.imwrite(filename, frame)
                print(f"捕获: {filename}")

                frame_count += 1
                last_capture_time = current_time

            # 添加小延时避免CPU占用过高
            time.sleep(0.01)

    except KeyboardInterrupt:
        print("\n用户中断捕获")
    finally:
        cap.release()
        print(f"捕获完成，共保存 {frame_count} 张图片")


if __name__ == "__main__":
    # RTSP配置
    rtsp_url = "rtsps://bblp:xxx0@192.168.8.201/streaming/live/1"

    # 开始捕获（无限循环，直到按Ctrl+C）
    capture_rtsp_frames(rtsp_url, interval=3)

截图命令：

复制代码

ffmpeg -rtsp_transport tcp -i "rtsps://bblp:xxxx@192.168.8.201/streaming/live/1" -y -frames:v 1 capture1.jpg