摘要： 為了在工業(yè)現場和安防監(jiān)控領域更好地利用Hi3559強大的視頻圖像處理能力實現高清視頻的遠距離傳輸和智能算法，采用Hi3559+FPGA硬件架構，通過高清數字接口(High Definition Digital Interface，HD-SDI)視頻均衡器利用同軸線纜傳輸方式，設計實現了多路1080P的高清視頻傳輸系統(tǒng)。該設計系統(tǒng)方案主要是解決了Hi3559雖然支持多種Sensor視頻接口，但是沒有可以直接支持多路HD-SDI攝像頭的輸入方式和設計方案。該系統(tǒng)利用Hi3559實現了8路HD-SDI視頻圖像的采集、傳輸、處理、以及全景顯示。相比海思常見的相機串行接口(Camera Serial Interface，CSI)傳輸方案，采用HD-SDI傳輸距離更遠，理論可達200 m。通過測試和驗證，該設計方案可行，傳輸距離遠，工作穩(wěn)定可靠，對于多路HD-SDI視頻的采集傳輸和全景顯示等方向具有較高的推廣和應用價值。
中圖分類號： TN941.1 文獻標識碼： A DOI：10.16157/j.issn.0258-7998.211439 中文引用格式： 王毅，張禹，錢宏文. 基于Hi3559的多路HD-SDI視頻傳輸系統(tǒng)[J].電子技術應用，2022，48(3)：83-87. 英文引用格式： Wang Yi，Zhang Yu，Qian Hongwen. Multi-channel HD-SDI video transmission system based on Hi3559[J]. Application of Electronic Technique，2022，48(3)：83-87.
Multi-channel HD-SDI video transmission system based on Hi3559
Wang Yi，Zhang Yu，Qian Hongwen
China Electronics Technology Group Corporation No.58 Research Institute，Wuxi 214072，China
Abstract： In order to make better use of Hi3559′s powerful video image processing capabilities in the field of industrial sites and security monitoring, to achieve long-distance transmission of high-definition video and intelligent algorithms，adopting Hi3559+FPGA hardware architecture, using the coaxial cable transmission method with the high-definition digital interface(HD-SDI) video equalizer, this paper designs and realizes the multi-channel 1080P high-definition video transmission system. This design system solution mainly solves that although Hi3559 supports a variety of Sensor video interfaces, it does not have an input method and design solution that can directly support multiple HD-SDI cameras. The system uses Hi3559 to realize 8-channel HD-SDI video image acquisition, transmission, processing and panoramic display. Compared with HiSilicon′s common camera serial interface(Camera Serial Interface，CSI) interface transmission scheme, HD-SDI transmission distance is farther theoretically up to 200 m. Through testing and verification, the design scheme is feasible, long transmission distance, stable and reliable, and has high promotion and application value for the acquisition and transmission of multi-channel HD-SDI video and panoramic display.
Key words : Hi3559；FPGA；high definition digital interface(HD-SDI)；equalizer；1080P
Hi3559作為華為海思推出的一款強大片上系統(tǒng)(System on Chip，SoC)芯片，不僅具有豐富的視頻和各種外圍接口，而且內部集成了很多視頻圖像處理模塊，處理器支持不同格式視頻的編碼和解碼、圖形的畸變校正、去噪，以及鏡像、旋轉和色彩的增強等，可用于多路Sensor視頻的輸入，內部集成H.265編解碼處理單元，能夠支持高清的RAW原始碼流視頻的輸出，SoC內部含有高性能圖像信號處理器(Image Signal Processor，ISP)[5]，SoC使用了低功耗的架構和工藝技術，支持多路全景硬件拼接[6]，為使用者提供了高性能的硬件平臺。
