map algorithm 中文意思是什麼

map algorithm 解釋
后驗概率極大化演算法
  • map : MAP ＝Military Aid Program 〈美國〉軍事援助計劃。n 1 地圖；天體圖；圖。2 〈美俚〉臉，面孔。3 〈美...
  • algorithm : n. 【數學】演算法；規則系統；演段。
  1. The efficiency of this algorithm can be recognized from the experimental results which are attached at the end of this thesis. this thesis ends with the study of the maximum a posteriori ( map ) method with

    本文最後對最大后驗概率估計法進行了研究，給出了最大后驗概率估計法的原理、方法和步驟。
  2. Densifying contour map based on intersecting algorithm of line and b - spline curve

    樣條曲線求交演算法加密等高線圖
  3. After common contour map data is studied and analyzed deeply, a complementary watermarking algorithm is proposed

    本文在對地形圖數據特徵進行深入研究分析的基礎上，提出了一種互補水印演算法。
  4. An algorithm for updating map image oriented to aviation gis

    的地圖背景更新演算法
  5. Modeling : this thesis develops a method different from traditional techniques that begins with the cylindrical projection of a generic model and its seamless global texture map using multiresolution technique, and then automatically fit the unwrapped cylindrical projected mesh to the texture map with an improved algorithm that based on 2d morphing to specify corresponding feature points ( or lines ). finally, we propose a formula of inverse cylindrical projection to recompose the deformed mesh, and after the texture mapping a photo - realistic individual facial model is created

    採用多解析度技術構造紋理無縫拼接圖，然後把三維網格模型投影到圓柱面上並展開，根據二維圖象變形技術中特徵點匹配演算法的數學思想，將匹配公式進行改進后應用於模型網格點的適配，在作了一定假設后推導出逆向圓柱映射的計算公式，再將適配后的柱面網格映射回去，最後進行紋理映射生成真實感的特定人臉的三維模型。
  6. Speediness algorithm on the segmentation of color map

    一種彩色地圖自動分層的快速演算法
  7. The position system has used to give first place to with gps navigates, dead reckoning system and map - matching system are the subdominant ones. the location is calculated by dead reckoning algorithm when the gps system invalidated which can affact well in short time

    定位系統採用了與gps為主、航位推算系統為輔的組合導航系統，利用航位推算對gps定位出現失效時，進行輔助定位，在短時間內能獲得良好的效果。
  8. In this paper, the main research works are as follows : 1 ) survey and analysis previous work in auv navigation and summarize : as the cumulate error, the dead - reckoning and inertial navigation systems ca n ' t be used without other modified system ; the acoustic navigation system is used only in small range, and is very expensive. 2 ) two important approaches in geophysical navigation techniques are summarized, one is terrain contour based navigation, this approach is investigated keystone today ; the other is image based navigation, due to no perfect image sensors and image seabed map, this approach has seldom been practised. 3 ) two important terrain contour based navigation algorithms has been applied to auv, one is match algorithm - based terrain contour match ( tercom ) ; the other is kalman filter - based sandia inertia terrain - aided navigation ( sitan )

    主要研究內容包括：一、總結分析了當前水下導航的常用方法和不足之處，指出基於航位推算的導航方法，存在著最大的問題就是導航誤差的積累問題，如果沒有修正系統，這種方法很難滿足使用要求；其次指出基於聲學的導航方法，造價昂貴，導航范圍有限，難以滿足自主水下航行器大范圍導航的需求；二、總結了當前水下地形輔助導航的主要技術路線，一是基於地形高程的匹配方法，這是當前研究的重點；二是基於地形圖像的匹配方法，由於缺乏良好的圖像傳感器，和可用的海底圖像地圖，目前這種方法還有待研究發展；三、將兩種地形高程匹配的常用方法應用到自主水下航行器上：以相關演算法為前提的地形輪廓匹配（ tercom ）方法和以卡爾曼濾波為基礎的桑迪亞慣性地形輔助導航（ sitan ）方法，前者演算法簡單可靠，但是導航精度不高，後者雖然精度比較高，但存在著演算法較為復雜、有可能發散和出現奇異值等問題。
  9. Application and development of map algorithm in turbo decoding

    碼譯碼中的應用和研究進展
  10. Applying the classical pattern recogtiition theory anci ftiflcial neural networks method, this paper proposes the analog fault diahoes priricip1s with backward - propagation neural network ( i3pnn ) arid self - or ~ anizing feature map ( sofm ) neural network algorithm implementation

    本文提出了模擬電路故障診斷前向多層誤差反傳（ bp ）網路和自組織特徵映射（ sofm ）網路的演算法實現方法。
  11. Finally, this thesis introduces the model - based light map ( mbl ) technique and its basic idea and framework. in order to capture the facial reflection model efficiently, a 3d light stage with 1. 5 - meter radius is custom - built. a basic recovering algorithm based on conjunction gradient method is described and some results are provided

    先提出了基於模型的光照圖技術的基本思想和框架，然後介紹自行設計建造的一個半徑為1 . 5米的三維光照架，和一個基於共軛梯度法的光照圖恢復演算法。
  12. Turbo codes represent the new code structures, which consist of pccc ( parallel serially convolutional code ) and sccc ( serially concatenated convolutional code ). in this paper, the background of turbo codes are firstly introduced, which includes the base principle of error correction code 、 block code and convolutional code ; the principle of turbo code and the iterative decoding is secondly expanded ; the key decoding algorithm : a revised map algorithm and iterative decoding theory are detailed ; then, a new turbo code structure : hccc ( hybrid concatenated convolutional code ) is presented, and the capacity of this code method is analyzed, the average capacity upper bound is derived ; at last, this code is simulated on awgn ( additive white gaussian noise ) channel and rayleigh fading channel

    本文首先介紹了turbo碼的背景知識，包括差錯控制的基本原理、分組碼和卷積碼；然後闡述了turbo碼的基本原理，包括turbo編譯碼器結構及迭代譯碼原理；較為詳細地描述了關鍵的譯碼演算法： ?種改進的最大后驗概率（ map ）譯碼演算法及迭代譯碼演算法；提出了一種新的turbo碼結構：混合turbo碼（混合級聯卷積碼） ；並用編碼性能聯合界分析方法對混合turbo碼進行了性能分析，得出了其平均性能上界；並在高斯白噪聲通道和瑞利衰落通道上分別作了一些應用研究及計算機模擬實驗。
  13. Vectorization method based on thinning algorithm used in the design prevails currently, whose progress is : after the binary scanned map images are thinned, recognize the skeleton captured

    本文採用比較流行基於細化的矢量化方法作為整體設計思想。細化地圖掃描二值圖像后，對提取出來的骨架線進行識別。
  14. This paper discusses the polygon medial axis definition of gis and calculation geometry, and their main distinguishing feature, pointes out that the polygon medial axis should be the locu of the equal - distance points to two or more edges of the polygon ; analyzes the relevant different algorithm and cases in practice, and proposes the geometry means in theory relatively rigid and widely meeting the requirements in practice - dotted pair rank method and the map algebra polygon medial axis method, utilizes them to offer several polygon medial axis calculation examples

    摘要比較了當前國內外gis中和計算幾何中關于多邊形中軸的定義，討論了它們的主要特點，指出多邊形中軸應是到兩個以上邊距離相等點的軌跡，並據此分析了相應的各種演算法和實際應用場合，提出了理論上較為嚴密、能夠廣泛滿足實際應用需要的幾何方法點對序列法和地圖代數多邊形中軸法。
  15. On the realization of this new scheme, the influence of the fixed - point quantification upon the modified max - log - map algorithm is evaluated. simulations show that : if the input data is 5 bits at length, the unfavorable effect of quantification error is negligible

    在系統實現方面，分析了輸入數據的定點量化對改進的max - log - map譯碼演算法的影響，結果表明輸入數據採用5比特量化時，量化誤差對譯碼結果的影響已很小。
  16. Improved self - organizing map algorithm for protein folding and its realization

    蛋白質折疊演算法和計算實現
  17. Several improved decoding algorithms are discussed including log - map algorithm and sliding window map algorithm

    研究了幾種在map演算法基礎上的改進演算法。
  18. The optimum decoding algorithm - map algorithm and its improved algorithm in logarithm domain used in turbo codes were derived, combining them with the stop criteria of iteration hi realization of decoding, an improved algorithm using fading factor was introduced

    推導了turbo碼的最優譯碼演算法? ? map演算法及其在對數域中的相關改進演算法，並結合譯碼實現的迭代停止準則，提出了一種應用了衰減因子的改進譯碼演算法。
  19. Deriving formulas of map algorithm and its modified algorithms in the log domain ( including max - log - map and log - map ), and simulating the performances of turbo codes over additive white gaussian noise ( awgn ). 2

    詳細推導了map譯碼演算法，以及map演算法在對數域中的修正演算法（ max - log - map和log - map演算法） ，並對turbo碼在高斯白噪聲通道下的性能進行了模擬分析。
  20. There are two sorts of decoding methods : map algorithm and sova algorithm and the thesis emphasizes the former

    Turbo碼的譯碼演算法主要有map演算法和sova演算法兩大類，本文重點研究了前者。
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