shifting algorithm 中文意思是什麼
shifting algorithm
解釋
移位演算法-
Secondly, in phase unwrapping to overcome the spread of wrong point, changing the patch of unwrapping phase is done to improve the correctness of it. then, the relation between the unwrapping phase and the height of reconstructed object is discussed detailedly. the data processing, algorithm analysis and reconstructing object are done for the collecting fringe image which are all based on matlab language, in all these achievements, the improvement and innovation aspect are following : a ) in order to stabilize the interference fringe, a new equivalent shifting object method is presented by using fringe stabilizing device to stabilize the interference fringe though moving object and ccd camera which fixed on a precise moving platform together, the experimental result shows the fringe drift is less than a / 20 in five minutes, and the equivalent phase shifting precision is x / 100
論文在全面闡述了光學三維輪廓位相測量術的發展、應用現狀、研究熱點及未來發展趨勢的基礎上，簡要介紹了傅立葉變換和相移位相輪廓測量術的基本原理，對兩種測量方法存在的問題及誤差進行詳細分析和比較；針對位相解包裹錯誤點的傳播問題，作者通過改變解包裹路徑來提高位相解包裹的正確性；分析討論從解包裹位相（ x ， y ）到再現物體的高度h （ x ， y ）物理量之間的關系，研究相應的演算法，利用matlab平臺，對實際採集的條紋圖像進行處理和輪廓重構，其中改進及創新工作主要表現在以下兩個方面： （ a ）針對干涉型結構光場干涉條紋出現的漂移抖動對相移的影響，提出了一種用條紋穩定器穩定干涉條紋，用精密移動平臺使物體和ccd攝像頭同步移動實現等效相移的方法，建立了相應的測量系統，系統的條紋穩定可以達到。 -
The algorithm, basing on convolution filtering technique and the fringes " gray values max - min distribution, can automatically and accurately carry out space frequency spectra shifting without spectra analysis and spectrogram in the technique of phase method of projected grating for 3 - d object shapes measurement. the new algorithm makes image processing much caster and the technique of object shapes measurement more automated. the phase error caused by filtering and the crossed - optical - axes geometry setup is also discussed
本文採用投影光棚相位法和數字卷積濾波技術：根據柵線的條紋灰度值分佈具有極大極小分佈的特性，提出卷積濾波形貌光學自動檢測的圖像處理方法，有效地實現了頻譜自動移位，從而進一步提高了圖像處理的速度和形貌測量技術的自動化程度；同時對採用兩光學主軸相交，且非遠心投影系統所產生的誤差進行了分析，並提出了修正方法。 -
Compensating algorithm of phase - shifting error and its application in digital microscopy holography
餘弦擬合消除相移誤差在顯微數字全息術中的應用 -
Chapter 4 : the influence of different phase - shifting angle of reference wave in recording, of the phase - shifting error and of the quantization error on the quality of the reconstructed image is investigated respectively in two - step phase - shifting inline digital holography. and an effective method of eliminating the phase - shifting error is presented, in which the summation of the intensity bit errors of the reconstructed image is taken as an evaluation function for an iterative algorithm to find the exact phase - shifting value. the feasibility of this method is demonstrated by computer simulation
通過數值分析不同相移角的選取對再現像的強度誤差的影響，發現再現像強度誤差依賴于記錄時相移角的選取，當相移角在一定范圍內，其再現像的強度誤差相對較小；提出了一種有效消除相移誤差的新方法，並將其應用於二步同軸相移數字全息，對此進行了計算機模擬，得到了很好的結果，證明該方法對于相移誤差的消除是很有效的；對量化誤差所作的數值模擬發現，當信號被量化成8比特（ bit ） ，即256個灰度級以上，量化噪聲的影響相對較小。 -
Abstract : a new algorithm w - ecop is presented to effect incremental changes on a standard cell layout automatically. this algorithm deals with cell inserting and cell moving based on rows instead of on cells as most placement algorithms usually do. an integer programming problem is formulated to minimize the adjustment on the initial placement and a heuristic method is presented to search for a shifting path so as to optimize the wirelength. test of w - ecop on a group of practical test cases shows that the algorithm can successfully accomplish incremental placement with good quality and high speed
文摘:提出了一種新的增量式布局方法w - ecop來滿足快速調整布局方案的要求.與以前的以單元為中心的演算法不同，演算法基於單元行劃分來進行單元的插入和位置調整，在此過程中使對原布局方案的影響最小，並且盡可能優化線長.一組從美國工業界的測試例子表明，該演算法運行速度快，調整后的布局效果好 -
The deviation introduced by reference phase shifting errors on four - steps and five - steps algorithm are analyzed. based on the principle of phase algorithm, a novel compensation method of reference phase - shifting error is described for four - steps algorithm and the five - steps algorithm. the theoretic analysis and data simulation indicate that the phase deviation arising from the first and the second harmonic reference phase - shifting errors can be eliminated using this method
在研究相位偏移干涉測量技術基礎上，重點研究了五幅演算法計算精度及移相誤差對計算結果的影響；提出了四幅演算法及五幅演算法移相誤差補償方法，理論分析及模擬模擬結果顯示，該方法可以補償移相過程中一階移相誤差及二階移相誤差對相位偏移干涉測量精度的影響。 -
In accordance with the phase - shift miscalibration and detector nonlinearity, the error - compensating phase - shifting algorithms based averaging technique are proposed. and in order to solve the problems brought by traditional linearity scanning unwrapping algorithm, which leads to incorrect phase unwrapping, a correlative region algorithm for phase unwrapping is developed
針對相移器的相移不準給相位求解帶來的誤差，提出採用基於平均技術的誤差補償移相演算法；針對傳統線掃描位相去包絡演算法不能對含有較大噪聲的位相圖進行正確去包絡的問題，提出了區域相關位相去包絡演算法。 -
Finally, a new 3d surface ranging method based on a digital fringe projection and shifting technique is systematically studied and non - linear rectification algorithms which reduce measurement error is proposed. at the same time, the noise - immune phase unwrapping algorithm is deeply studied and a new algorithm for phase unwrapping of phase map is proposed. experiment make known the algorithm can reduce measurement error, bypass the noise points automatically, solve the problem of the shade sheltering or cavity, overcome the error propagation problem and better results have been obtained
論文最後系統研究了基於數字相移條紋投影曲面三維測量方法，創造性地提出了一種減小測量誤差的非線性校正演算法，取得了預期的效果；同時對相位去包裹演算法進行了較深入研究，提出了一種噪聲圖像相位去包裹方法；實驗表明該方法能減小非線性測量誤差，自動避開噪聲點和間斷點，獲得了滿意的結果。 -
Abstract : a group of phase shifting algorithms is derived by the method of undeterminedcoefficients ( ucm ). the unknown coefficients are set in a general algorithm expression, and then solved by adding bonding equations according to error compensation requirements. thus the algorithm design and error alalysis are carried out simultaneously. phase shifting algorithms derived by this method are insensitive to one or more error sources which are considered in algorithm design
文摘:提出了一種以誤差補償為目的的新的相移演算法設計方法?待定系數法，該方法首先在演算法表達式中引入一系列待定參數，根據對誤差補償的要求提供約束方程，從而解出這些未知參數.待定系數法使得演算法設計和誤差分析是同時進行的，改變了以往先設計演算法再進行誤差分析和評價的過程，由待定系數法導出的相移演算法對演算法設計中所考慮的誤差源具有良好的補償性能 -
Since ehmm can keep the states unchanged for a given range of the change of observation vector, the algorithm can effectively resist the impact of the shifting ii
由於2dehmm模型在觀測值發生一定范圍變化時仍能夠保持狀態不變，因此該演算法對人臉基準點定位誤差具有很好的適應能力。 -
Phase error compensation algorithm and simulation in four - step phase shifting interferometry
四步相移干涉測量的相位補償及模擬 -
This method assumes that each inteferogram has an identical phase shift that can be found out by least - suqares fitting. this algorithm determines any errors of phase shifts deviating from their i ntended values and also suppresses the errors by substituting actual values in subsequent computation. the algorithm can solve the problem of random phase - shifting very accurately, but the algorithm needs a great of iteration number and considerable calculation
In - bokkong等人從同一干涉圖中諸象素相移量相等這一認識出發，提出求解各干涉圖的相移量的方法， in - bokkong的演算法是通過交替求解相位分佈和相移量來進行的一種迭代演算法，這種方法可以解決隨機相移誤差問題，且有很高的精度，但迭代次數較多，計算量較大。 -
A new random phase - shifting correction algorithm is presented in this paper on the basis of five - step phase - shifting. it can directly solve the value of phase - shifting errors without solving phase. meanwhile, the new algorithm can greatly decrease the iteration number and calculation without depressing the measurement accuracy
本文的重點在於提出一種新的隨機相移誤差的校正演算法，在傳統五步相移的基礎上不需要求解相位分佈，通過合理的近似處理可以直接求解相移過程中存在的隨機相移誤差，在保證精度的情況下，能大大減少迭代次數和計算量。 -
With the theory of wavelet transform and reversible integer - to - integer wavelet transforms based on shifting frame used in image / video compression field introduced, a new real - time implement of speck algorithm using dsp chip is provided. then the technology of motion estimation and motion compensation is discussed and an adaptive technique for the wavelet video codec to reduce the " block artifact " is presented. and the implement of the wavelet video compression system using adv611 chip is discussed next with the performance emulation result
在系統討論了小波理論在圖像視頻壓縮編碼領域的應用后，結合dsp技術提出一種基於dsp應用的實時低存儲需求的改進speck圖像編碼器；隨后探討基於小波變換的實時視頻編碼器的實現，在論述運動估計與補償技術的基礎上，針對應用空域運動估計補償技術的低比特率小波視頻編碼器提出一種自適應消除塊效應的技術；並討論了基於adv611晶元的視頻壓縮系統的壓縮性能；最後提出一種基於dsp平臺具有極低時延的小波視頻混合編碼方案，對該方案的壓縮性能進行了討論並給出初步的硬體實現方案。 -
Then, the digital signal processing functions in g. 729a are optimized by dsplib. according to the structure characteristic of dsp, some sentences of circulation and shifting are rewritten. finally, the complexity of calculation of the whole algorithm is reduced to 30 mipss, which satisfies the real - time request very well
接著，採用dsplib庫函數對演算法中的數字信號處理函數進行了優化，根據dsp的結構特點，改寫了部分循環和判斷轉移語句，最終整個演算法的計算復雜度降低到30mips ，完全滿足實時要求。
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