pixel 中文意思是什麼

The computational results of the particle images are agreement with the simulated datain reasonable, the most absolute difference of the displacement is 0. 6671 pixel at the x abscissa and 0. 7928 pixel at y abscissa ; the computational results are equal to the data form the algorithm of particle brightness - distribution pattern tracking ( the conventional cross - correlation algorithm ) at voluminous points, their discrepancy is only one pixel at few points, mostly in boundary area

西安理工大學碩士學位論文最後，在visualfortran環境下給出了這種演算法的具體實現，處理模擬粒子圖像的結果與模擬數據比較吻合，最大位移絕對誤差在x方向是0 . 6671像素，在y方向是0 . 7928像素;計算結果與示蹤粒子灰度分佈模板法（基本的互相關法）在絕大部分點是相同的，只在少數點相差一個像素，而且大多出現在邊界區域。

Retrieves or sets a render state that enables a per - pixel alpha test

檢索或設置啟用每像素alpha測試的呈現狀態。

And understanding and studying the spectral features and variation rules of geo - targets in the experimental area, raising that it is the basis of geo - targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo - targets, realizing that in a great extent spectral - integrated - form - based classification method can remove the phenomenon of " different spectrum with same objects " resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo - target with similar spectral forms and much different values of whole reflection ratio. it is suggested that " red edge " range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel - based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. the remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed

研究結果如下：首先針對荒漠化地區的地物特徵，對高光譜數據不同波段的數據質量、波段組合進行了評價，提出了適用於荒漠化監測的基本波段選擇集；初步了解和掌握了研究地區的地物光譜特性及變異規律，進一步明確了掌握地物光譜特徵和變異規律是用成像光譜儀數據提取地物信息的基礎；發現了基於光譜整體形狀的分類方法在很大程度上能夠消除由於傳感器、地物目標觀測方向之間的角度變化引起的反射率曲線整體平移的「同物異譜」現象，對于譜形相似而整體反射率的值相差較大的兩類地物，通過引入均值和方差圖像參與分類得到解決；研究還表明在植被「紅邊」范圍內的波段是進行荒漠化監測的主要特徵波段，這些波段與植被生物量和蓋度都有密切的關系，是開展精細植被分類研究和植被定量反演的重要基礎；像元的導數光譜分析可以消除土壤背景的影響，是進行植被生物量和蓋度定量反演的有力工具；建立了荒漠化監測主要評價因子的定量反演模型，並分析了模型的適用性。

For the cardioid curve, a fast pixel - level drawing algorithm is presented

摘要給出了快速繪制心臟線的逐點演算法。

And the characteristics of each algorithm are analyzed theoretically. according to this analysis, a new pixel - level fusion algorithm based on the activity and similarity of source images is proposed and its performance is tested to be superior to the congeneric algorithms

在以上分析的基礎之上，作者提出了一種基於源圖象活躍度和相似度的像素級融合演算法，經過實驗比較證明該演算法的融合結果質量較同類演算法有大幅度的提高。

The point of singular signal ' s conjoint pixel always changes acutely in its gray - level value. the gray - level distributing gradient of conjoint pixels can show this change

而信號的奇異點或突變點往往表現為相鄰像素點處的灰度值發生了劇烈的變化，我們可以通過相鄰像素灰度分佈的梯度來反映這種變化。

It is shown that the error could be rather remarkable in some extreme situations and could be neglected in the others. the variance of parameters inside pixel, contexture of the pixel and the surface wind speed are the controlling factors of the scaling error

結果表明亞像元狀態和結構是像元尺度誤差的主導因素，風速變化對尺度誤差有明顯的影響，不論何種形式的非均勻性，都須遵循相同的尺度擴展步驟，以達到消除誤差的目的。

Since pixel - level contrapose pixel coordinate, trigonometric function must be used to translate polar coordinates to pixel coordinate when the curve is described by polar coordinate. so research is very little on algorithms for generating this sort of curve by now

由於逐點是針對象素坐標系而言，而對極坐標系下描述的曲線，在轉換到象素坐標系時要用到三角函數運算，因此目前很少提到對極坐標曲線生成演算法的研究。

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。

A sub - pixel image matching method on re - sampling and curve fitting

重采樣和曲面擬合的圖像匹配方法

Sub pixel edge detection algorithm based on guadrativ curve fitting

基於二次曲線擬合的圖像亞像素邊緣定位演算法

Then based on the method of dimidiate pixel model, the current model is improved, and the model of deriving vegetation fraction from normalized difference vegetation index ( ndvi )

然後在像元二分模型的基礎上對已有模型進行改進，建立用ndvi歸一化植被指數估算植被覆蓋度的模型。

The direct application of eftl is flat panel displays. it has several preferences, emissive, wide view angle, quick response, wide working temperature range, high pixel resolution, anti - strike, long life, less number of fabrication process etc. all these properties are better than plasma display fed and lc

它的主動顯示、平板化、視角大、反應快、工作溫度范圍寬、像素鑒別率高、抗震動、壽命長、工序少等特點，都勝過液晶、等離子體、 lc等顯示技術：第一章介紹了無機電致發光及有機電致發光的發展現狀和存在問題。

Gdi does not support the pixel format of the file

Gdi +不支持文件的像素格式。

By convention, visual designers use the lowermost left pixel of the bitmap as the transparent color

根據約定，可視化設計器將該位圖最下方左側的像素用作透明色。

The second parameter specifies the rate of the pixel clock in megahertz

第2個參數指定的是像素時鐘頻率（單位為mhz ） 。

In the process of processing image, image ' s vision effect is improved by some image enhance technique such as neighboring region average and pixel expanding. in accord with the feathers of the soil microphotograph, a three - level segmentation scheme is used to segment the soil microphotograph

在圖像處理過程中，對圖像進行了增強處理改善圖像視覺效果，採用了諸如灰度變換、改進的鄰域平均法和像素點擴張法改善圖像對比度以及消除圖像中的噪聲。

With the widely use of raster display, pixel - level algorithm becomes a research hotspot of basic algorithms of computer graphics now

隨著光柵顯示器的廣泛使用，逐點演算法成為當前圖形學基礎演算法中的一個研究熱點。

With the widely use of raster display, pixel - level algorithm becomes a research hotspot of fundamental algorithms of computer graphics now

隨著光柵顯示器的廣泛使用，逐點演算法已成為目前圖形學基礎演算法中的一個研究熱點。

Conclusion r1 represent pixel - value of original image range block, r represent mean - value of original image range block, d represent mean - value of original image domain block, d1 represent pixel - value of resumptive image domain block, d represent mean - value of resumptive image domain block. superior perfermance of resumptive image range block is obtained as compared to conventional creative function by one iteration, that is,

） ， d _ i （ i = 1 ， 2 ， … ， n ）分別為某一恢復圖像定義域塊的均值和每一像素的像素值，我們用傳統的和改進的生成函數分別進行一次迭代，則用改進的生成函數進行迭代的恢復圖像每一值域塊的效果較好，即：