edge pixel 中文意思是什麼
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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。 -
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 -
By using threshold segmentation, edge recognition, pixel labeling and center of gravity method, the accurate sites of every model can be acquired from the image
綜合運用閾值分割、邊緣識別和像素標記法等圖像識別技術，通過圖像得到每個模型的相關定位信息。 -
By taking advantages of epipolar line features and depth discontinuities in reference 中國科學院 軟件 研究所 博士 學位 論文 基于 圖 象 的 快速 繪制 技術 的 研究 images ， an efficient inverse wmping algorithm is pfoposed in chapter 3 for gcnerating nagcs of novel views by combining multiple eference images 帆 enhm different vie 呷 oints because continuous segnents determi 。 d by pairs ofedge pixels at co 。 spending epipolar lines are order kept ， only pairs of edge pixels in the reference 渝 明 e e necess 叨 口 cowute to obtain generalized disparity of all points in the desired image as a result ， sighficant acceleraion could be made in the endering pfo 比 鴕 two accelerating techiq 此 s e presented in this algori 山 mb accelerate the hole illing process his algorithm extends the reference images rom projection of single col ： ii ’ ected surface in previously developed nvnverse w 出 下 er to ima 驢 s captured rom complex scene in chapter 4 ， an 《 dent ibr method is prese 庇 仙 y takn ull 訕 antage of 呷 bies c 咖 the method can simulate the 3d details on sllri ： ace of object successfully he 。 叩 proach ， called rered ature mopmp consists of two pans at fst ， an origi 。 ltexture with orthogonal displacements per pixel is deco 啊 osed into a series of new t6 刀 mfcs with each 他 lug a given displacement per pixel ， called ae ， ea atures ， or lt hen hese lt e used to render the novel view by conventional texture mapping d avoid gaps n the endered hlla 驢 ， some phels are to be interpolated nd extended in the 廠 kaccoding to the depth differe eee between two neighbor pixels in the original texture as these ltlt fc … e much storage nd therefore much time is equired to install ltlt into the text ’ ufc buffec an 舊 thod is pfoposed to co 呷 fcss the ltlt ， nd the cottcspondingfclldering method is given experimental esults show that the new method is efficient ， especially n rendering those objects with a smaller depth rnge compared withtheir size ， such as relief surfaces of building
與己有的三維變換方法相比較，該方法不但成功地填補了由於投影區域擴張而產生的第一類空洞，而且成功地填補了由於空間深度非連續物體相互遮擋而產生的第二類空洞，從而方便地實現了虛擬環境中的漫遊；基於物體表面深度的連續性，本文提出了一個位移預測方法? ?此方法可以從單幅參考圖象獲得逆映射過程中所需要的目標圖象的位移信息，從而大大提高了演算法的效率：與通常的正向映射演算法相比，此演算法克服了多幅參考圖象所帶來的計算量成倍增長等問題，而且誤差較小。 2 ）基於極線幾何的快速逆映射演算法。利用參考圖象的邊界信息與隱含的遮擋關系，以及極線幾何的性質，本文第三章提出了一個基於極線幾何的快速3 『一中國科學院軟體研究所博士學位論文基於圖象的快速繪制技術的研究逆映射演算法，從多幅參考圖象精確合成當前視點目標圖象。 -
Then propose an improved demosaicing algorithm for the bayer cfa based on hardware implement, which introduces a direction flag for each pixel, and a smooth method for detecting edge direction. it is easy to implement and can be used in real time on high speed cameras in practice, but with low quality
然後本文先提出了一種改進的硬體可實現的bayer彩色濾波陣列的插值方案，該演算法主要引入了方向標志位的概念以及平滑的邊界仲裁法則來檢測邊界，從而選擇合適的方向進行插值。 -
In addition, the paper gives the calibration method of the measurement system, implements the sub - pixel orientation to the image edge, analyses all kinds of factors that affect the measurement precision and gives the solution
另外，文中也給出了本測量系統的標定方法，對圖像邊緣實現了亞象元定位，分析了影響測量精度的各種因素並給出了處理辦法。 -
The experimental results show that the single pixel edge can be obtained, and continuous contours can be extracted
大量實驗表明應用本演算法進行輪廓提取和跟蹤，可以提取單像素的邊緣和連續的輪廓曲線。 -
Image measurement is a new measuring technology. it based on the optics, and syncretized electronics, computer science, laser science, and image processing technology, then, the image measuring system is formed. edge location is a key skill in the image measurement, and locating edge in pixel is satisfactory in common usage
圖像測量是近年來測量領域中形成的新的測量技術，它以光學為基礎，融合電子學、計算機技術、激光技術、圖像處理技術等現代科學技術為一體，組成光、電、計算機綜合的測量系統，它被廣泛應用於幾何量的尺寸測量、航空遙感測量、精密復雜零件的微尺寸測量和外觀檢測等和圖像有關的技術領域中。 -
A novel edge detection operator is presented, which is the simplest operator based on regular convolution kernel. moreover, its error is no more than one pixel in the noise - free case
提出了最簡邊緣檢測運算元，它精度高，運算速度快，針對于分塊均勻的數字圖象具有常規運算元無可比擬的檢測效果。 -
For the sake of sparseness of edge pixels, the matching area may big enough to find an accurate corresponding edge pixel
由於邊緣點的稀疏，匹配時選用的區域可以大些，可以得到準確的匹配點。 -
We propose a new two level matching algorithm for seed points in propagation. firstly, our algorithm compares edge similarity around the target pixel based on edge extraction. this level of feature matching is both simple and reliable
提出了一種新的用於種子點可靠匹配的兩層演算法，該演算法在圖像邊緣提取的基礎上，首先比較目標點匹配的邊緣相似性，這種特徵匹配具有簡單可靠的優點。 -
The prime problem of speckle filters is edge preservation, the traditional speckle filters cannot effectively preserve edge, to preserve the edge, a practical and reliable way can accomplish this mission, say, smoothing is running within a width of single pixel chain along edge direction
斑點濾波的主要困難是邊緣保持問題，傳統的邊緣保持濾波方法不能有效保持邊緣；研究發現在斑點濾波中為了保持邊緣，必須沿著邊緣方向在一個像元寬范圍內進行平滑處理。 -
But with the development of the minute machining technology, the measuring precision is highly strengthened, and the sub - pixel technology is introduced in image measuring system, which can locate edge in sub - pixel
圖像測量是以圖像為研究對象的，所以圖像處理技術成為圖像測量系統的關鍵，尤其是邊緣檢測技術的效果將直接決定圖像測量系統的精度。 -
Segmentation of chromosome : the chromosome image is segmented by the method of boundary gray level threshold and entropy algorithm based on genetic algorithm, then, after boundary smoothing and edge tracing, the chromosome position information is acquired. 2. diagnostic extraction of chromosome : on the basis of skeleton pixel after thinning, the medial axes are obtained by the orthogonal approximation
主要研究內容如下: 1 、染色體圖像分割:採用基於邊界灰度的門限演算法和基於遺傳演算法的熵演算法來尋找染色體圖像二值化需要的分割閾值，對分割后的圖像存在的噪聲分別採用內插來置換和邊界跟蹤來消除; 2 、染色體特徵提取:採用細化技術將染色體細化一些離散的骨架點，用插值方法獲得平滑的曲線染色體中線。 -
Sub - pixel edge detect technique based on log operator
運算元的亞像素邊緣檢測 -
Through using multi - scale characteristic of the edge information and synthesizing the multi - scale edge, the image edge with only one pixel wide was obtained
結合自適應閾值方法，在每種尺度下分別提取了圖像邊緣；而後利用邊緣信息的多尺度特性，綜合多尺度邊緣得到單像素寬邊緣。 -
The paper uses image measurement technology for industrial components " shape dimension determination. the core technology, including sub - pixel detection, geometric element detection, error analysis and edge simulation image, are introduced in turn
本文將圖像檢測技術應用於工業零件形狀尺寸檢測，並對亞像素邊緣檢測、幾何基元檢測、形狀誤差評定、邊緣模擬圖像製作等關鍵技術進行了研究。 -
Edge detection and contour tracking are very important in computer vision. because the single pixel edges are needed in computer vision, an algorithm of edge detection and contour tracking is proposed using the good local character and multi - scale character of wavelet transform in the dissertation. the fuzzy algorithm is applied to pick the model maximum points, so that the single pixel edge can be obtained
邊緣檢測和輪廓跟蹤在計算機視覺中有著重要的地位，利用小波變換良好的時頻域局部化特性和多尺度特性，針對計算機視覺中需要提取單像素的點線等邊緣的需求，本文提出了一種基於小波變換的邊緣檢測和輪廓跟蹤演算法，通過真正的邊緣點是模的局部極值點這一特點，應用模糊演算法對模極大值點進一步篩選得到單像素級的邊緣，並在邊緣跟蹤時，有效利用原圖像的信息，通過在小鄰域內尋找局部峰值對丟失弱邊緣進行了補償。 -
Firstly it extents the edge detection operator of gray image - roberts edge detection operator to edge detection of color image, considering the three channels of every pixel synthetically by using euclida distance, and obtains a gray - level edge image i1
它首先將灰度圖像邊緣檢測運算元roberts運算元推廣到彩色圖像邊緣檢測中，採用歐氏距離將像素彩色值的各分量綜合考慮，得到灰度邊緣圖像i _ 1 。 -
A discrete orthogonal polynomial method is put forward for curve fitting sub - pixel edge detection algorithm, which decomposes two - dimensional curve fitting into one - dimensional curve fitting, and improves the reliability and computation speed of the algorithms
引入離散正交多項式，提出了一種新的曲面擬合亞像素邊緣檢測演算法。該演算法將二維曲面擬合分解為一維曲線擬合，大大提高了演算法的可靠性和速度。
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