監控幀 的英文怎麼說
中文拼音 [jiānkòngzhèng]
監控幀
英文
supervisory time frame-
The low frame rate of the monitoring video also makes it possible to use more complex arithmetic to gain greater compression ratio
監控視頻的低幀率，也為視頻實時壓縮提供了更充裕的時間，有可能採用復雜的演算法，獲得更好的壓縮效果。In order to deal with those problems above, a video surveillance scheme based on dsps was presented, which used high performance dsps to replace pc as central control unit. not only did we realize the hardware circuits of the system, but also we developed it ' s software. furthermore, three essential methods, for instance the data transfer method by extend direct memory access ( edma ), buffer management method by three buffer strategy and optimized data acquire method had been discussed
為了彌補這些不足，論文採用高性能的dsps取代傳統的pc作為核心處理器，設計了一種基於dsps的交通視頻監控系統的圖像處理平臺，詳細的對其硬體實現和軟體調試進行了論述；在這個基礎上分析了視頻圖像採集和處理的流程，討論了一種利用edma的實時后臺傳輸數字視頻方法和三幀緩沖的存儲器管理方法，為系統的實時性提供了保障。Subsequently, the various audio and video compression protocols in surveillant system, especially the fundamentals of wavelet compression technology are introduced in chapter two. the comparison between wavelet transform and dct transform is given. the schemes of intra - frame coding and sequence frame coding based on wavelet compression are used as a standard in current system
第二章介紹了監控系統中所採用的各種音視頻壓縮協議，對小波壓縮技術的一些重要概念作了簡要的介紹，詳細比較了小波變換和dct變換的優缺點，給出了基於小波壓縮的單幀及序列幀編碼方案，並將其作為本系統的視頻壓縮標準。
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