探析網絡高速球未來技術發展趨勢
中安網
摘要： 高速球是一種高端的球型攝像機，具有運轉速度快、定位精確、監控方式靈活等特點，已廣泛應用于平安城市、校園監控、無人值守變電站等場所。高速球已越來越為人所熟知。隨著高速球市場需求的提升，應用開始呈現多元化發展。由于高清化、智能化、網絡化等技術的迅猛發展，促使了高速球的特色功能層出不窮。
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</a>< 高速球" title="高速球">高速球" title="高速球">高速球" title="高速球">高速球是一種高端的球型攝像機，具有運轉速度快、定位精確、監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" 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title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控" title="監控">監控方式靈活等特點，已廣泛應用于平安城市、校園監控、無人值守變電站等場所。高速球已越來越為人所熟知。隨著高速球市場需求的提升，應用開始呈現多元化發展。由于高清化、智能化、網絡化等技術的迅猛發展，促使了高速球的特色功能層出不窮。
網絡高速球是高速球特色發展的重要分支，是模擬高速球和IP技術融合發展的完美結晶。在高速球基礎上，只要增加一塊IP模塊即可構成一個基本的網絡型高速球。在結構上，網絡智能高速球最少只需引出電源線與一根網線即可，其布線更加方便。在傳輸方式上，網絡智能高速球通過網絡進行傳播，傳播的是數字信號，傳輸范圍廣，容易實現遠程接入。
未來技術發展趨勢
高清化
隨著國際市場和國內市場對于監控系統的普及和大量使用，人們對圖像的要求越來越高：從最開始能看到圖像，到現在的要清晰的圖像，到今后的能進行處理分析的高清晰圖像。整個市場高清化的氛圍，消費者的需求無疑刺激高清百萬像素網絡球機等高清技術與產品的快速普及。
傳統的網絡球主要基于CIF和D1分辨率的視頻處理，視頻可視范圍小，分辨率不足以看清圖像細節。高清網絡球首先解決了“看得清”的難題，最高達1920×1080的分辨率將視頻細節表現得一覽無余；其次16：9的視頻格式同樣解決了“看得廣”的難題，相對于4：3的傳統監控視頻，高清網絡編碼直接提升了30%的可視寬度，更適合安防監控領域應用。特別是以下場所，高清網絡球可以大展拳腳：
1、大型室內監控
非常適合類似球場、會館、圖書館等大范圍的室內場合應用，高清的畫質和寬廣的可視角度地特點將有利于安保系統的監控。高清網絡球甚至可以監控到具體的一個物品的特征，從而保障場館的安全性。
2、路面、卡口監控
寬闊的路面和卡口往往是傳統監控的難題。以一個普通十字路口為例，往往需要3-4個攝像機配合使用才能覆蓋，而且由于圖像的清晰度不夠問題，為了看清一個物體往往需要對鏡頭拉伸，并需要頻繁的轉動。高清網絡球的出現，可以提供近6倍于傳統監控的可視范圍和解析能力，直接可以看清畫面中的任意局部細節，一般無需對鏡頭的進行操作。且更寬的可視寬度保證了1-2個攝像機即可覆蓋整個路口，減少了監控管理上的負擔。
同樣對于高速卡口、路面等大場景下監控環境，高清網絡球提供了管理者極大的便利性和有效的監控質量。
3、電力系統
適用于發電站、變電所、室外鐵塔、高危地區等電力系統視頻監控。
4、智能化分析
高分辨率、高清晰度的圖像為智能分析提供了無與倫比的圖像源，提高后期視頻分析的準確度和可靠性。
高清網絡球作為一款高性能的編碼設備，在應用功能一般主要基于圖1所示的四大模塊：視頻模塊、音頻模塊、編碼模塊、網絡模塊。
視頻模塊：
視頻模塊主要負責采集高清一體化攝像機的HD-SDI / SDI信號，并進行重建和解碼工作，將單線串行的HD-SDI / SDI信號解碼成YCbCr數據送至編碼模塊，數據流如圖1-2。如果攝像機直接輸出YCbCr數據則此模塊可省略。
音頻模塊：
音頻模塊由編碼和解碼組成。前端采集模擬音頻信號，包括線形輸入和麥克風輸入，并解碼成IIS數據送至編碼模塊。解碼部分將編碼模塊完成的IIS數據編碼成語音信號，經有源放大輸出。
編碼模塊：
編碼模塊主要負責視頻和音頻的編碼和解碼工作。視頻編解碼支持H.264、MJPEG編碼格式，分辨率最大支持1920×1080，可進行實時High、Main和Baseline profiles的H.264編碼。音頻編解碼支持AAC，MP3、G.711等主流格式。
網絡模塊：
網絡部分兼容10M和100M以太網，負責將音視頻數據發送至服務器、存儲，支持RTSP等標準網絡協議，可進行web操作。
此內容為AET網站原創，未經授權禁止轉載。