a condition existing within or at the output of a computing element that causes a substantial computing error because of the saturation of one or more of the parts of the computing element in an analog computer 在模擬計算機中,由于一個或多個計算元件部分的飽和狀態而引起的明顯的計算錯誤,這種錯誤在相應的計算元件輸出上就表現為過載狀態。
6 . this thesis solves the rapid dem producing problem for large-scale terrain " massive data " . at the same time, it implements robustness processing on each significant algorithm, which avoids the potential failure in dem producing due to the mathematical computing errors 實現了大比例尺地形“海量數據”快速建立dem的問題,同時對各個關鍵算法均進行了健壯性處理,從而避免了數值計算誤差可能帶來的dem建立失敗。
optimal route choice algorithm is one of the key ingredients of dynamic traffic distribution theory . its major goals is to find the optimal route to destination from road net as soon as possible with lowest computing error, according to the road structure, road weight and od value 它是根據交通控制系統提供的路網結構、路段權值和出行的od對值,在路網中找出從出發點到目的地的最優路徑,其要求是能夠盡可能快速和準確地實現誘導路徑的計算功能,滿足動態交通流誘導的全局尋優和實時性等方面的要求。
moreover, the identifying and processing software of image is applied for storingextracting object counting the character of object computing errors and so on . at last, the track precision of object can be got . this system not only applies dalsa camera and pc-dig collecting card to ensuring real time of collecting image, but also applies software compiled by vc + + to improving processing speed and flexibility operating convenience 該系統不僅采用先進的dalsa航空用數字相機和性能優越的pc-dig圖像采集卡,以及低電壓差分信號(lvds)的接口模式,用很低的電壓擺幅來保證在相對較短的距離內(10-15m)實現高速(400mbps)數據傳輸,從而保證了圖像采集的實時性,同時用vc++編寫的軟件使圖像處理速度高,靈活性強,操作方便。