極坐標圖 的英文怎麼說
中文拼音 [jízuòbiāotú]
極坐標圖
英文
polar coordinate chart-
If we graph in spherical polar coordinates we get surfaces with the familiar figure eight cross section; again, these are graphs and not orbital shapes.
如果我們在球極坐標中作圖線，得到熟知的8字形截面；再說一遍，這是圖線而不是軌道形狀。< uk > if we graph in spherical polar coordinates we get surfaces with the familiar figure eight cross section ; again, these are graphs and not orbital shapes. < / uk >
< uk >如果我們在球極坐標中作圖線，得到熟知的8字形截面；再說一遍，這是圖線而不是軌道形狀。 < / uk >One retrieval method using rst invariant features based on lpm ( log - polar transformation ) transformation is proposed
提出一種基於對數極坐標變換lpm （ log - polartransformation ）的不變特徵圖像檢索演算法。The watermark is embedded in the lpm of fourier magnitude spectrum of the original image, and a small portion of resulting lpm spectrum is used to calculate the watermark positions
在文章中，首先對原始圖像進行傅里葉變換，然後再將數字水印嵌入在該傅里葉變換的幅度頻譜的對數極坐標域。In this paper, a new technique is proposed for rotation, scaling and translation invariant image watermarking based on log - polar mappings and phase - only filtering
該文的研究工作和貢獻是：基於對數極坐標仿射lpm和相位濾波器pof ，提出了一種不受旋轉按比例縮放和位移rst影響的數字圖像水印技術。The paper abstracts out the palmprint mainline characteristic owing to palmprint image gradation by the gray value characteristic property method, defining the online palmprint characteristic space with the form of the polar coordinate and compressing the dimension, at last we use the neural network to accomplish the design of identification authentication system with the on - line palmprint as the mating algorithm. based on this, a fast and reliable system of identification authentication can be built
採用基於掌紋圖像灰度特性的方法提取出掌紋的主線特徵，以極坐標的形式定義在線掌紋的特徵空間並降維處理，最後用神經網路作為匹配演算法完成在線掌紋身份驗證系統的設計，以此為基礎建立了快速、可靠的新型身份認證系統。The properties of the key optical and electrical devices and the controlling mode in the system are put forwards. using the polar coordinate lines with different directions and the circulars with the same axis can be written together. by using he - cd laser ( 442nm ) as writing light source, the system can directly write line with width 05 # m on a sample
本文的主要目的是建立了一種極坐標和直角坐標相結合的激光直寫系統的原理樣機，探討系統的各部分器件的基本性能要求，為今後研製高精度激光直寫系統做好工作基礎，分析了激光直寫系統中關鍵器件的性能要求，基本控制方式，實現了極坐標方式下，任意旋轉角度直線圖形與共心圓環的光刻。Scales and sizes for plotting frequency characteristic and polar diagrams
繪制頻率特性圖和極坐標圖的標度和尺寸Scales and sizes for plotting frequency characteristics and polar diagrams
繪制頻率特性圖和極坐標圖的標度和尺寸This technique avoids computing inverse log - polar mapping ilpm to preserve the quality of the watermarked image, and avoids exhaustive search to save computation time and reduce false detection. experimental results demonstrate that the digital watermarking technique is invariant and robust to rotation, scaling, and translation transformation
在研究中發現，圖像在空域中的旋轉對應于該對數極坐標域中沿著角坐標的位移圖像在空域中的按比例縮放對應于該對數極坐標域中沿著對數半徑坐標的位移而圖像在空域中的水平位移對該對數極坐標域沒有影響。3d points are converted to images based on spherical polar coordinates, and point cloud surface information such as location, normal and color are stored in two - dimensional images
本文通過球面極坐標將點雲曲面的幾何信息及表面屬性信息映射到二維圖象中去。From the point cloud surfaces, multi - layered geometry images are created which can represent the original models accurately very much. the compounded geometry image representation of point cloud surfaces, is also based on the former transform method, where the difference lies : take one of coordinates as the gray value and another two as location respectively, three different geometry images can be created. three gray images are combined into a compounded color image
點雲曲面的復合圖象表示方法，首先把點雲曲面中點的笛卡爾坐轉換為球面極坐標，分別把球面極坐標[ r ， ， ]中的一個坐標轉換為象素的灰度值，另外兩個量轉換為該象素的坐標，這樣就可以得到三幅不同的圖象，把這三幅灰度圖象分別對應到彩色圖象的r ， g ， b中去，就組合成為一幅復合彩色圖象。To create geometry images of point cloud surfaces, we first determine the center of the polar coordinates and convert the cartesian coordinates [ x, y, z ] to polar ones r, coordinate is encoded as the location and r is encoded as the gray value in the image. to represent point cloud surfaces with high complexity, we propose using multi - layered images
根據笛卡爾坐標和極坐標之間的轉換關系，三維坐標[ x ， y ， z ]首先被轉換成[ r ， ， ] ，其中[ ， ]被轉換成幾何圖象中的象素坐標， r轉換為該象素的灰度值，生成幾何圖象。Firstly, the basic character of the remote filed eddy current is simulated and analyzed in case of two - dimension axial symmetry which approves the existence of remote filed eddy current phenomenon ; the full circumferential defect model is investigated to approve the feasibility of using the rfec techniques to detect the position and depth of defect ; the pit corrosion 、 circumferential and axial crack models are simulated, and the defect character based on voltage plane polar plot and the changes of phase and amplitude are analyzed to supply the standard for defect reconfiguration
首先，在二維軸對稱情況下模擬與分析了遠場渦流的基本特性，證實了遠場渦流現象的存在;對全周向缺陷的遠場渦流檢測進行了詳細研究，證實了遠場渦流檢測缺陷位置和深度的可行性;對點狀腐蝕、軸向與周向裂紋三種非軸對稱缺陷進行三維有限元模擬，利用相位差和幅值變化曲線與電壓平面極坐標圖對缺陷特徵進行分析，為缺陷形狀重構提供了依據。The iris normalization is invariant for translation, rotation and scale after mapping into polar coordinates
極坐標轉換的虹膜歸一化方法，消除了圖像旋轉平移的干擾。The log - polar transform ( lpt ) is a well - known space - variant image representation used in many image vision systems to eliminate the effects of scale and translation for the input image
摘要對數極坐標變換是圖像的一個空間變體表示，很多圖像視覺系統用它來消除輸入圖像的縮放和平移效果。First of all, we select a referrence point pair of the input image and the template image. and then we transform the minutiae positions into polar coordinates. finally, we match the input image with the template one to judge whether these two images are captured from the same finger
首先，找到輸入圖像和模板圖像的參照點對，然後將兩幅圖像中的細節特徵點相對于各自的參照點轉化為極坐標形式，最後進行比對，確定兩幅圖像是否來自於同一手指。Derivation of dirichlet and neumann problem in laplace equation with algebraic method
極坐標下平面曲線的四步作圖法Specification for scales and sizes for plotting frequency characteristics and polar diagrams
繪制頻率特性和極坐標圖用標度和尺寸規范After that, a svd of polar seal image matrix method is mentioned to extract vsv features
提出了利用極坐標圖像矩陣進行奇異值分解的方法以提取不變奇異值特徵。分享友人