two-dimensional transform 中文意思是什麼

two-dimensional transform 解釋
二維變換
  • two : n. （pl. twos）1. 兩人；兩個東西，一對。2. 二的記號。3. 兩點鐘。4. 兩歲。n. -ness
  • dimensional : adj. 1. 尺寸的。2. 空間的。3. 【數學】因次的；…次（元）的。
  • transform : vt （使）變形；（使）變化[轉化，轉變]；變態，改變（性質、機能等），改造，改革；【數學】變換；【電...
  1. For the anticounterfeiting of printings ( such as certificate ), the existent many ways ( such as rainbow holograms ) are not available as the need for special use : anti - distortion and anti - copy. basing in the double - random - phase transform, this article puts forward a new way that two - dimensional bar code is used as anticounterfeiting label with anti - printing ? scanning and anti - damage properties. the major job are : ( 1 ). basing in the ascii codes, numerals and alphabets are encoded and subsequently transformed into two - value bar code matrix figure. later, using amplitude - based double - random - phase transform, the enciphered gray scale figure is formed. by computer simulation ( 4f system ) and printing as well as scanning ( 20 times ), we get the result that the gray scale figure with little miscoding rate ( 0. 0026 ) by “ matrix expanding way ”

    本文主要開展了以下三項研究工作: （ 1 ） .用自定義編碼方案，將數字和字母（ ascii碼）轉換成二值條碼圖;對該圖形進行振幅型雙隨機相位加密變換，得到原信息的加密灰度圖;通過4f光學系統計算機模擬和列印-掃描實驗，證明本文提出的「矩陣擴展法」灰度圖具有較小的誤碼率，對於20次列印-掃描實驗，誤碼率不大於0 . 0026 。
  2. By use of the relationships between the hermite polynomial and the laguerre polynomial, the eigenequations of one - dimensional harmonic oscillator and hydrogen atom are conversed into the same equations in form. therefore the relationships between energy levels and wave functions of one - dimensional harmonic oscillator and hydrogen atom are found. through the coordinates transform, the relationships between energy levels and wave functions of two - dimensional harmonic oscillator and hydrogen atom are found

    首先綜述了諧振子與氫原子的基本理論的研究現狀，並在此基礎上對諧振子與氫原子的關系展開了研究，通過厄密特方程與拉蓋爾方程的相互轉化，將一維諧振子與一維氫原子的本徵值方程轉化為相同形式的方程，從而比較得出它們能量及波函數間的關系，並通過坐標變換將直角坐標系下二維氫原子的本徵值方程轉化成與曲線坐標系下二維諧振子的本徵值方程相同的形式，從而得出二維氫原子與二維諧振子的能量及波函數的關系。
  3. The main work includes : based on biot ' s dynamic consolidation equations, by the method of integral transform and matrix transfer, two - dimensional consolidation of layered saturated soils is studied. then, the general integral solutions of stress ( including pore pressure ) and displacement ( including fluid flow ) of any point were obtained under harmonic vibration loads according to staunch boundary condition. second, a program to verify the correctness of this dissertation is developed

    主要工作有：本文根據biot平面動力固結方程，運用積分變換和矩陣傳遞的方法，研究了成層飽和地基的二維biot固結問題，根據下邊界為不透水基巖的邊界條件，獲得了地基表面作用簡諧振動荷載時，任意點應力（包括孔壓） 、位移（包括流體流量）的一般積分形式解。
  4. Study of thermal perturbation of rutin by two dimensional correlation analysis and fourier transform infrared spectroscopy

    運用二維相關紅外光譜分析技術研究蘆丁的熱微擾過程
  5. It is based on the principle : under a number of angles, the x - ray attenuation in a cross section of a human body is measured by detector resulting in a set of profiles. this set of profiles is called the radon transform of the object in mathematics. the problem now is to reconstruct a two - dimensional image via inverting its radon transform

    它所基於的成像原理是：人體的某個剖面在若干個角度上被x射線束照射，照射后x射線的衰減量被檢測器記錄下來，形成投影集合，數學上將這個投影集合描述為該剖面的radon變換，通過反演radon變換就能夠重建剖面的二維圖像。
  6. Computerized tomography ( ct ) is a typical non - invasive examination techniques in medicine, which can depict anatomical structures without damaging the human body. lt is based on the principle : under a number of angles, the x - ray attenuation in a cross section of a human body is measured by detector resulting in a set of profiles. this set of profiles is called the radon transfoim of the object in mathematics. the problem now is to reconstruct a two - dimensional image via inverting its radon transform

    它所基於的成像原理是：人體的某個剖面在若干個角度上被x射線束照射，照射后x射線的衰減量被檢測器記錄下來，形成投影集合，數學上將這個投影集合描述為該剖面的radon變換，通過反演radon變換就能夠重建剖面的二維圖像。
  7. Most of these standards are based on the method of inter - frame motion compensation and two - dimensional discrete cosine transform ( 2d - dct ) and encode and describe the color video in ycbcr 4 : 2 : 0 format, which want to take advantage of human visual system ( hvs ) to save bit expense by decreasing the resolution of two color difference components

    當前國際上的壓縮標準普遍採用幀間運動補償加幀內二維離散餘弦變換的編碼方法，並且將彩色視頻序列表示為ycbcr格式，試圖利用人眼的視覺特性降低對色差信號的解析度來節省比特開銷。
  8. Wavelets transform has localized character and self - acclimated function. the particle images are processed directly in spatial domain for this peculiarity, two vision paths are simulated by wavelet multi - resolution decompositions of two - dimensional images, and matching calculations are carried through in each path. in this way, a fast matching model is founded

    小波變換的最大優點是多尺度分析，具有良好的局部化特徵和自適應功能，使得該演算法能夠直接在空域中處理粒子圖像，利用二維圖像的小波多尺度分解模擬兩個最主要的生物視覺通路，並對不同通路分別進行匹配計算，實現快速匹配。
  9. In view of the non stationary feature of the pressure difference fluctuation signal in the gas - liquid two phase flow, a flow pattern identification method was proposed based on the characteristic vector from the singular value of the matrix formed by the multi dimensional continuous wavelet transform values of the fluctuation signal

    摘要針對氣液兩相流壓差波動信號的非平穩特徵，提出了以多尺度連續小波變換值矩陣的奇異值為特徵矢量的流型識別方法。
  10. Fractional fourier transform of two - dimensional cosine - gaussian beams based on the wigner distribution function

    二維餘弦高斯光束基於魏格納分佈函數的分數傅里葉變換
  11. Based on approximating the impedance in terms of a ratio of polynomials in the transform variables, the corresponding hoibcs were given. adopting the spectral method, the one and two dimensional hotibc were derived for single anisotropic and multilayer complex material coated planar structures. hotibc ' s accuracy was improved after optimal method was introduced in the procession

    主要研究工作包括以下幾個方面： 1 、建立單層、多層任意介質塗敷平面和一維曲面結構的譜域高階張量阻抗邊界條件理論； 2 、依據各向異性介質內部場的傳播特性，採用譜域法建立單層各向異性介質和多層復雜介質塗敷結構的一維和二維高階張量阻抗邊界條件。
  12. Two - dimensional correlation analysis of oxidation process of ascorbic acid at different temperature by fourier transform infrared spectroscopy

    抗壞血酸升溫氧化過程的二維相關紅外光譜分析
  13. This dissertation suggests scheme of image denoising based on two - dimensional discrete wavelet transform. the denoising algorithm is described with some operators. by thresholding the wavelet transform coefficients - of noisy images, the original image can be reconstructed correctly

    通過對小波變換系數進行閾值處理，給出了一種基於二維離散小波變換的圖像去噪方法並用運算元的形式加以描述。
  14. 52 frequency index : a one - dimensional or two - dimensional index associated with a transform coefficient prior to an inverse transform part of the decoding process

    頻率索引：變換系數的索引值，該索引值被送到反變換部分進行解碼處理。
  15. It can be testified that the wavelet is a two - dimensional dyadic wavelet. the computation of the wavelet transform in image processing depends only upon the wavelet functional values at a few integer points

    這類二維二進小波對圖像的小波變換及其相關的計算只依賴于幾個整數點上的小波函數值，實現了某種程度上的快速演算法。
  16. The core of decompression is wavelet kernel using by adv611, that is, two - dimensional bi - orthogonal wavelet transform

    解壓縮的核心是adv611所用的小波核，即二維正交小波變換。
  17. The purpose of xml objects is to transform an xml document into a two dimensional grid representation that can more easily be stored in a relational database

    構建xml _ objects的目的是將xml文檔轉換成一個兩維網格表示，從而更易於在關系數據庫中存儲。
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