| Teleoperation is proposed to improve the complexity and limitations of traditional surgery.This article focuses on the video transmission system in teleoperation,in which the operating room and operating side are placed in two separate spaces.It is necessary to transmit the multi-angle surgical procedures collected by the HD camera to the control end to achieve information exchange.In order to simplify the operating room environment to avoid wiring,video data is transmitted using wireless radio frequency.In order to reduce the transmission bandwidth to compress the video and avoid setting up multiple transmitters and receivers,multi-channel data is used for integrated transmission.This article analyzes and designs the video transmission system through the teleoperation environment.Several kinds of compression standards is studied and the PSNR,code rate,encoding speed and other indicators are obtained through the test sequence.The H.264 standard is superior to other standards in terms of reconstruction quality,compression ratio and algorithm efficiency.The integration of video data is studied,and the interleaving coding using channel error correction is applied to data integration to solve the problem of delay.A variety of wireless technologies are analyzed and compared.OFDM and MIMO in WIFI technology are studied,and OFDM and MIMO techniques are used to improve spectrum utilization and channel capacity.The H.264 compression and interleave coding are implemented on the DSP platform and the FPGA platform respectively in this thesis.Then,the application of the WIFI module is realized through the packaging of the network protocol.Finally,the compression,integration and transmission of four 1080P@30f video data are realized.The transmission distance is greater than 15 M.The partial simulation and the overall experiment verify the success of the experiment. |
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