fourier images 中文意思是什麼
fourier images
解釋
傅立葉像-
Sequentially, the author discussed the technologies of medical image 3d visualization according to the clinical applications. with the development of computer, 3d visualization and computer graphics, the 3d visualization of medical images has progressed from fourier transform and convolve inverse projection to mpr ( multi - planar reformation, mpr ) and mtp ( maximum intensity projection, mtp ), nowadays, the real 3d reconstruction method, surface and volume rendering has risen. the image registering, image segmentation, pixel data set construction and 3d special interpolation are the key technologies in medical images 3d reconstruction
隨著計算機技術、三維可視化理論和計算機圖形學的發展，醫學圖像的三維可視化技術也從傅立葉變換、卷積反投影等基本圖像處理演算法，發展到真正的三維重建演算法：面繪制和體繪制；醫學圖像的三維可視化技術的應用也從三維醫學成像發展到虛擬內窺鏡，以及今天的虛擬可視化人體研究；而圖像的配準、圖像分割、體數據集的構建、三維空間插值則是醫學圖像三維可視化實現過程中的關鍵技術環節。 -
Fourier techniques provide a particular elegant framework from which to evolve a description of the formation of images.
傅立葉方法提供了一個特別優美的框架，從它發展出一種描述成象的方法。 -
We use fast fourier transform arithmetic to calculate two seriate images. this article discusses the basic principle of the cross - correlation arithmetic in detail, discuss each stage of its produce and development and also discuss the thinking, the merit and the defect of each algorithm. based on these discusses, we confirm our algorithm and realize it in programming with c + +
粒子圖像的匹配演算法的主要運算是將兩連續的視頻圖像進行基於快速傅里葉變換的互相關運算，本文詳細論述了相關演算法的基本原理，它的產生和發展的各個階段，在比較了各種演算法的基礎上確立了自己的演算法並以c + +編程實現。 -
Images of huanghua pears were acquired by means of machine vision system the method to describe the shape of irregular fruit was studied, in which the fourier transform and fourier inverse transform were applied a sort of software for fruit shape identification based on artificial neural network was developed
利用機器視覺採集黃花梨圖像，研究了不規則果品的形狀描述方法，提出在黃花梨的分級過程中採用傅立葉變換與傅立葉反變換對來描述果形，開發了基於人工神經網路的果形識別軟體。 -
By simulating mathematically on frequency and on space, we can find the average speed of space field and the average speed of frequency field that is weighted by amplitude, and analyse their relation, and analyse the meaning of space speed variance x and frequency speed variance v. in the fourth part, how to ensure the height of cloud is introduced, and basing on the theory of wind field continuity, the height updating quality controlling is introduced. in the fifth part, the system of cloud wind is introduced, we tracked cloud - motion of consecutive satellite images with one - minute interval by the 1 - d fourier analysis technique and the two - dim fourier analysis technique and the fft analysis technique, and dispose them with quality controlling. in the sixth part, we summarized our research and put up with shortages of this article
模擬模塊內各點的速度線性變化時，得到空間域平均速度以及頻率域以振幅為權重的平均速度，分析了空間域平均速度和頻率域以振幅為權重的平均速度的關系，並揭示空間域的平均速度的標準差_ x和頻率域的振幅為權重的平均速度的標準差_ v的意義，以及它們之間的關系；第四章介紹了雲跡風系統的高度指定以及風矢高度的劃分，並根據風場連續性原理，介紹了高度調整法的質量控制；第五章介紹導風系統的流程，選擇了三個時刻的ir雲圖，分別用一維傅立葉相位法、二維傅立葉相位法和快速傅立葉演算法計算一個風場個例，並對所得風場進行質量控制，並給出風場圖；第六章進行研究總結，指出不足和有待于進一步研究之處。 -
First, a new method of ultrasound - modulated optical tomography with real - time fast fourier transformation ( fft ) is reported to improve the detection sensitivity and snr. by discriminating ultrasound modulated information carried by scattering photons, the tomographic images of the biological tissue simulating media and a buried object are reconstructed with fft spectral intensity
1 、用實時快速fourier變換（ fft ）和聚焦超聲調制的光學層析術以增加探測靈敏度和信噪比，用fft實時地將調制光光信號濾出，用其譜強度重建圖像。 -
In order to resolve parallel shift, rotation and scale shift of images, parallel shift can be resolved by fourier transform ; rotation can be resolved by polar transform ; scale shift can be resolved by ln transform
為了解決圖像平移、旋轉、比例變化對相關的影響，可通過傅里葉變換解決平移的問題；通過polar變換解決旋轉的問題；通過ln變換解決圖像比例變換的影響。 -
The influences of recording conditions on the snr of the black - white digital images retrieved from fourier transform holograms were experimentally studied. the holograms were recorded on photoresist plates using an electrical addressed tft - lcslm as a data input device, and a normal ccd camera was applied for detecting reconstructed images
採用電尋址液晶空間光調制器作為存儲系統的組頁器，常規ccd探測器作為重構圖像的檢測器件，實驗研究了在光刻膠干板上記錄黑白二值條紋圖像的傅里葉全息圖時，記錄條件對重構圖像信噪比的影響。 -
In the research, the system captures real - time images based on the sdk, and saves the image data into buffers which are created by the system. the important and primary parts are got using the programs which are designed to process and analyze the image data in the buffers, and the geometrical features such as area, perimeter, moment invariants and fourier descriptor, are measured. the parts are classified according to the threshold of each geometrical feature with the image database
課題研究中，在設計的試驗平臺上，通過攝像頭和sdk開發包對零件進行實時圖像採集，並將其存入開辟的數據緩沖區內;由設計的圖形處理模塊對緩沖區內的數據採用各種演算法進行分析處理，形成研究中感興趣的重要圖像;調用圖像識別判斷模塊，主要提取了零件的周長，面積，慣性矩，傅立葉描繪子等形狀特徵參數，根據定義的識別函數，並結合圖像數據庫，進行零件識別或缺陷檢測。 -
Furthermore, three fourier storage schemes were proposed for practical anti - counterfeiting : ( 1 ) store black - white digital images with hidden information made by image coding method, ( 2 ) store several images on the same spot with reference beams of different directions ( peristeophic multiplexing ), ( 3 ) store a serious of given images recorded closely ( space multiplexing ). three different fourier holograms were recorded on photoresist plates following the above three schemes using the optimized recording conditions obtained in the first part of this study work. the reconstructed images form the holograms showed some special anti - counterfeit effects
此外，本課題還研究了傅里葉全息存儲在防偽上的實際應用，提出了三種防偽存儲方案： （ 1 ）運用圖像編碼方案，存儲了具有隱藏信息的編碼黑白二值圖像； （ 2 ）運用旋轉復用方案，在同一存儲點用不同方向的參考光存儲了多幅圖像； （ 3 ）運用空間復用技術，在一定區域內緊靠著記錄一系列特定圖像的傅里葉全息圖。 -
High accuracy correlative detection technology of object signal is to search and detect objects by optical correlation, and it can detect real - timely, recognize automatically and orientate precisely, optical correction processes images at light speed and its device is simple, and fourier transformation can be realized
高精度光學目標信號相關測試技術，利用光學相關探測方法，對要搜索、探測的目標進行實時探測，自動識別，高精度定位。光學相關是以光速進行的，處理速度快，結構簡單，利用由空間域到頻率域的傅立葉變換來實現的，本文針對如何設計傅立葉變換系統實現光學相關進行研究。
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