一种基于树莓派的无线WiFi视频采集传输方法

针对传统的基于树莓派的无线WiFi视频采集传输方法中存在的问题,提出一种改进后的基于Picamera的视频流采集传输方法,该方法采用Picamera采集视频流,首先使用并行线程来处理采集到的视频流,然后将其压缩成JPEG(joint photographic experts group)格式的网络视频流,最后向接收端发送JPEG格式的网络视频流。实验结果表明:提出的方法与基于SD卡(secure digital memory card)转存的视频采集传输方法相比,具有更好的实时性,且解决了存储空间占据较大的问题;与基于OpenCV的视频采集传输方法相比,画质更为清晰;与基于Picamera的视频流采集传输方法相比,数据传输的速率比改进前提高接近1.5倍。

Wireless WiFi video acquisition and transmission method based on Raspberry Pi

Aiming at the problems existing in the traditional Raspberry Pi-based wireless WiFi video acquisition and transmission method, this paper proposes an improved Picamera-based video stream acquisition and transmission method. This method uses Picella to collect video streams, firstly using parallel threads to process the acquisition. The incoming video stream is then compressed into a JPEG-formatted network video stream, and finally a JPEG-formatted network video stream is sent to the receiving end. The experimental results show that the proposed method has better real-time performance than the video capture transmission method based on SD card dump, and solves the problem of large storage space occupation. Compared with OpenCV-based video capture transmission method, The picture quality is clearer; compared with the Picamera-based video stream acquisition and transmission method, the data transmission rate is nearly 1.5 times higher than before the improvement.