一种基于树莓派的无线WiFi视频采集传输方法
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TN277

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陕西省教育厅自然科学基金(编号:17JK0343)、 陕西省科技厅重点研发计划(编号: 2019GY-113)、 西安市科技计划项目(编号:201805030YD8CG14(6))


Wireless WiFi video acquisition and transmission method based on Raspberry Pi
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Shaanxi Provincial Department of Education Natural Science Fund (No. 17JK0343), Key Research and Development Plan of Shaanxi Provincial Science and Technology Department (No.: 2019GY-113), Xi'an Science and Technology Plan Project (No.: 20110530YD8CG14(6))

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    摘要:

    针对传统的基于树莓派的无线WiFi视频采集传输方法存在的问题,本文提出了一种改进后的基于Picamera的视频流采集传输方法,该方法使用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。

    Abstract:

    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.

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朱磊,王鑫,刘屹,等. 一种基于树莓派的无线WiFi视频采集传输方法[J]. 科学技术与工程, 2020, 20(6): 2312-2316.
Zhu Lei, Wang Xin, Liu Yi, et al. Wireless WiFi video acquisition and transmission method based on Raspberry Pi[J]. Science Technology and Engineering,2020,20(6):2312-2316.

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  • 收稿日期:2019-06-18
  • 最后修改日期:2019-12-23
  • 录用日期:2019-09-16
  • 在线发布日期: 2020-04-14
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