contour gradient 中文意思是什麼

contour gradient 解釋
等高線梯度
  • contour : n 1 外形，輪廓；周線，輪廓線。2 等高線，恆值線；【電視】等場強線（＝contour line）。3 概略，大要...
  • gradient : adj. 1. 傾斜的。2. 【動物；動物學】步行的，能步行的。n. 1. 〈英國〉（道路的）傾斜度，坡度，坡路。2. 【物理學】梯度，陡度，（溫度、氣壓等的）變化率，梯度變化曲線。
  1. When catchment area, average channel gradient and catchment shape factor of designed culvert or bridge are known, a user can be convenient to get local parameters c, e and b from standard contour charts and easy to calculate flood flow just by a calculator. design period of flood flow is enormously shortened as well as a high precision. estimated flood flow through culvert or small bridge by new calculation model is generally less than by traditional methods, so that much cost is cut down a s reducing the span of culvert or small bridge

    以75000km ~ 2的川中丘陵地區為試點研究區，繪制了該地區新模型的參數等值線圖，率定了不同設計頻率的改正系數，使設計者只需在地形圖上獲取集水面積，河道平均坡降和流域形狀系數，在參數等值線圖上查得橋涵所在地的相應參數，使用計算器即可迅速計算出設計流量，大大縮短了設計周期，且精度較高，設計的洪水流量一般低於傳統方法，從而可減小橋涵跨徑，節省投資。
  2. Two observation models ( color and gradient ) targeting the head contour are added to work together with the face detector in head tracking

    在人臉跟蹤擴展為頭部跟蹤時，加入兩個針對頭部的觀測模型（色彩信息和輪廓信息） ，與人臉檢測器共同指導跟蹤。
  3. 2. building the grid - framed dem of viet nam and the grid - layer chart with the properties of gradient and direction with geographical information system technology ( gis ) and contour line with rate of 1 : 500, 000

    （ 2 ）採用地理信息系統技術，以及越南1 : 50萬比列尺的等高線資料，建立越南地區柵格結構的數字高程模型（ dem ） ，以及屬性為坡度和坡向的柵格圖層。
  4. In this thesis, some key issues of the vr technique are systematically investigated. firstly, for the image filters and image interpolation between slices, a integrated interpolation algorithm is presented based on the contour shape and correspondence matching, which keeps the shapes and grays information the objects of interest. secondly, the fidelity of effect of the vr for medical images is studied, and a continuous - gradient - based method for transparent volume rendering is proposed, which vivifies the results of volume rendering

    首先，研究了醫學斷層圖像數據的濾波及層間插值技術，提出了一種基於輪廓形變和對應點匹配相結合的混合插值演算法，在實現圖像層間插值的同時保持了目標的輪廓形狀與灰度信息；其次，對醫學影像容積重建效果的逼真度進行了研究，提出了一種基於連續梯度轉換函數的互動式透明體繪制方法，使重建效果更加生動、真實。
  5. First we introduce theory and merits of graphic wavelet transform, then mallat algorithm, multi - scale characteristic, quadratic b - alpine wavelet and the coefficients of this filters, and etc. later we calculate the gradient matrix based on the result of wavelet transform, thin the contour and get spatical information

    先介紹圖像小波分解方法的原理、 mallat快速演算法、多尺度特性、 3階b -樣條小波基函數的選取及其濾波器系數的推導等，然後根據小波變換結果計算梯度矢量矩陣，進行非極大值抑制和雙閾值化，提取目標輪廓。
  6. On the basis of analyzing factor ( soil particle composition, soil bulk density, water stable aggregate content, antecedent soil moisture, slope gradient, rain intensity, accumulation depth and soil crust, soil and water conservation tillage measures ) affecting soil infiltration rates, several relation models was obtained ; analyzed in detail different soil and water conservation tillage measures intensifying infiltration rates, while there have the same rainfall condition, the increasing infiltration rates of contour tillage and artificial digging and artificial hoeing in gully areas of loess plateau are 67 % and 41 % and 29 % ; the increasing infiltration rates in hilly areas of loess plateau is 45 % and 22 % and 14 %

    在相同的降雨條件下，黃土高原溝壑區等高耕作與直線坡相比，可提高入滲67 ，人工掏挖可提高入滲41 ，人工鋤耕可提高入滲29 ；黃土丘陵溝壑區等高耕作可提高入滲45 ，人工掏挖可提高入滲22 ，人工鋤耕可提高入滲14 。並根據黃土高原超滲產流的概念和水量平衡方程，建立了不同水土保持耕作措施強化入滲速率模型。
  7. A developed simple m - s model for image segmentation in geometric active contour model is presented based on intra - region similar and inter - region dissimilar properties. the model constructs an energy ( cost ) function, which is made of intra - region variations and weighting squares of subtraction of region mean values. using gradient - descent methods, the energy function is minimized and we get a curve evolution equation that segments image

    基於區域內一致性加權區域間差異性構造能量函數，利用最陡梯度法使能量函數最小化，提出了一種改進的簡化mumford - shah （ m - s ）圖像分割模型，該模型利用區域內方差描述區域內一致性，區域間平均灰度值之差的平方描述區域間差異性，實驗結果表明，通過調節加權系數，該模型對弱邊界圖像分割具有較強的適應性。
  8. Secondly, for the image edge detection, methods including the gradient method, the sharp - processing method, and the hough transformation were used, and the contour tracing was also conducted

    邊緣檢測處理部分採用了梯度處理法、銳化處理法、哈夫變換處理法，並對圖像作輪廓跟蹤處理。
  9. The outcomes show that cultivation measures have the reduction functions of run - off energy and slope sediment production, of which, the action of contour cropping is the maximum and the action is reduced along with the increase of rainfall intensity and surface gradient ; cultivation measures also have a certain correlation on the reduction functions of run - off energy and erosion, in the meanwhile of slope sediment production, it is effected by the factors of soil erosion resistance and scouring resistance

    結果表明：耕作措施對徑流能量及坡面產沙均具有削減作用，其中等高耕作的作用最大，隨雨強和地面坡度的增大其作用減弱；耕作措施對徑流能量的削減作用與減蝕作用之間具有一定的相關關系，但坡面產沙同時受土壤抗蝕、抗沖性等因素的影響。
  10. For the image with random field feature, the description language is probability distribution model, and the description length equals the negative base - two logarithm of the probability of the image data ; for the region homogeneity properties of active contour, the description language is chosen as a sign gradient map, and the description length is the summation of sign gradient inside the active contour ; for the active contour regularity, the description language is smoothness, and the corresponding description length is the length of active contour curve

    隨機場圖像的描述語言採用概率分佈模型，描述長度是圍道內外區域中圖像數據概率的以2為底對數的負數；活動圍道區域一致性的描述語言為有符號的梯度圖，描述長度是圍道內區域有符號梯度的總和；圍道形態的描述語言採用平滑性，描述長度正比于圍道的長度。
  11. Therefore the gvf ( gradient vector field ) is used to substitute the traditional potential field and it overcomes the defects of the traditional active contour

    於是，我們採用一種梯度向量流場作為外力，從而有效地克服了傳統勢能場的弱點，給曲線的移動以很好的指向。
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