重構圖象 的英文怎麼說
中文拼音 [zhònggòutúxiàng]
重構圖象
英文
reconstructed image-
Firstly, chromatism analysis and wavelet transform are used for color image compression coding. in this method, one of the three color components of a color image ( for example the g component of a rgb color image ) is coded using wavelet transform, and the chromatism between g and other two color components rg = r - g, bg = b - g is coded respectively using chromatism analysis. during decoding, g ~ is first reconstructed using wavelet inverse transform and inverse quantisation, and rg, bg are reconstructed using chromatism analysis inverse transform ; then r, b are calculated by r = g + rg and b = g + bg respectively
其一是應用色差分析和小波變換對彩色圖象進行壓縮編碼,該方法是對彩色圖象的三個色彩分量之一,如rgb圖象的g進行小波變換編碼,而對g與另兩個色彩分量的差值(即rg = r - g和bg = b - g )進行色差分析編碼,解碼則是通過反量化和小波逆變換得到g ^ ,通過色差分析的逆變換得到兩個重構的色差rg ^和bg ^ ,再算出r ^ = g ^ + rg ^ 、 b ^ = g ^ + bg ^ ,最後由r ^ 、 g ^ 、 b ^重構圖象。For example : the designer often only pays close attention to the composition in the plan form, and ignore the user " s need, in other words, ignore the character of the residents " behavior and the important social, cultural and psychological influence of the living environment on resident " s life ; there are often strong contrast of firm and magnificent houses with extremely bad public open space environment ; either low volume rate or wasted land resource can always be found ; the doctrinaire cloning leads to the lack of character, distinction and beauty in housing design and construction
例如:設計者往往僅關注平面形式的構圖,而忽視使用者的需要,即忽視居民的生活行為特徵與居住環境中社會文化心理等因素對居民生活的重要影響;小區建設中常有住宅堅固氣派而外部公共空間環境極差的強烈反差;容積率過低、浪費土地資源的現象也時有發生;不加分辨的拿來主義導致社區組團建設缺乏特色、個性和美感等。The aim of projective reconstructing is to estimate the position and direction of cameras through matching points in different images so lay the foundation for further reconstructing. on the basis of current methods of projective reconstructing, we used the levenberg - marquardt method to optimize the result of linear method so the precision is be improved, and we use the bundle adjustment method to entirely optimize the structure of scene and projective matrixes
本文在研究已有射影重建演算法的基礎上,利用l - m演算法對基於基礎矩陣的射影重建演算法得到的線性結果進行優化,提高了演算法的估計精度和穩定性,並在求得所有圖象對應的投影矩陣后利用bundleadjustment方法對空間結構及投影矩陣進行全局優化。The thesis reviews the theory which is the basis of synthetic aperture processing and introduces five algorithms of image reconstruction : the coherent addition provides a good opportunity for the real time sas ; the envelope processing can work when sonar echo returns lack phase coherence ; the i - q processing can reduce the sampling rate ; the broadband and ctfm processing are both aimed to increase the sas mapping rate
討論了用於重構圖象的五種演算法,包括簡單的可進行實時處理的相關合成法,可以在缺乏相位信息時使用的包絡處理法,可以降低采樣率、減少運算量、存儲量的正交處理法,可以提高聲納運行速度,從而提高成象率的寬帶處理法和ctfm法等五種演算法。The main work is as follows : 1. an error resilient algorithm to collaborate multiple description coding ( mdc ) and error concealment ( ecn ) is presented. the strategy of this method is to reconstruct the low quality image followed by recovering the lost wavelet tree with error concealment method when end - user receives few descriptions
在誤碼環境下,要保證解碼端重構圖象的質量,就要綜合採用多種抗誤碼方法,本文對差錯復原技術的綜合應用進行了研究,具體內容如下: 1 、提出了圖象多描述編碼與差錯隱藏相結合的差錯復原演算法,在接收端接收到的描述較少時,首先根據接收到的若干描述重構低質量的圖象,然後採用差錯隱藏方法恢復丟失的子波樹。This method establishes the correlation template between one color component and the other two color components by using color correlation between three color components in each feature regions of a color head image. and it " s only necessary to quantize and code the first color component. during decoding, this color component is reconstructed
該方法利用彩色人頭圖象在各個特徵區域三個色彩分量之間的色彩相關性,建立其中一個色彩分量與另兩個色彩分量之間的相關模板,並只需對第一個色彩分量進行量化編碼,解碼時重構這個色彩分量后,加上極少量的相關模板系數就可解出另兩個色彩分量,從而恢復圖象。Thus the coding of a color head image actually become the coding of a color component. the experimental results show this method not only improve the coding efficient and compression ratio but also obtain satisfactory effect of the reconstructed image. at the same time, this method also enables gray head images to be converted into color head images
這樣對彩色人頭圖象的編碼實質上就變成了對其中的一個色彩分量的編碼,實驗結果表明該方法不僅提高了編碼效率和壓縮比,也能獲得較滿意的重構圖象效果,同時還使得將灰度人頭圖象轉換成彩色人頭圖象成為可能。Experimental results show that the new model is efficient and flexible. direct volume rendering has been done with the volume date that came from the 2d image series. finally we displayed the truly 3d image by the computer graphic technology of eliminating the hide surface and the light
對三維重建做了初步的研究,將二維mri圖像序列轉化為三維體數據,應用體繪制演算法實現了三維重構,並通過光照、隱藏面消除等計算機圖形學演算法實現真實感圖形顯示,從計算機屏幕上給出了形象逼真的人體腦部三維結構立體視圖。Is abstract, when you try to compile the new program, errors from the type checker will notify you about every construction site you should refactor
是抽象的,所以當您試圖編譯新程序時,來自類型檢查器的錯誤將通知您每個應該重構的構造位置。Exemplified with a number of representative systems which are highly valuable in industry and academically important, including electrode membranes of fuel cells, sesame seeds as well as hard bones and cartilages of marine fish, the extensive applications of microscopic mri images with various weighting approaches to the investigations of micro - structures and dynamics including the developmental processes of plants are demonstrated
以具有高度產業價值及重要學術意義的幾個典型體系:燃料電池電極月莫、芝麻種子和海生魚骨為例,說明各類加權圖象在微結構和動態(包括植物生長過程)研究中的廣泛應用。The theme of the thesis is the design of the urban square. the urban square is an important part of the external environment of the city, it has been developed for thousands of years following the steps of the city
論文以城市廣場的設計為研究主題。城市廣場是城市重要的物化形式,然而僅注重城市廣場的形體設計、講究構圖完美、象徵意義等的傳統設計方法已經不能滿足今天的需要。The double - color method and theory for stereodisplay of the torpedo ' s trajectory are presented in this article. program which is using the programming language of visual c + + 6. 0 + mfc + opengl has been compiled. in this program, torpedo can be displayed in stereodisplay mode, which can be controlled adapting to the changing of time and space
本文提出了魚雷彈道雙色立體顯示技術,系統的介紹了魚雷彈道立體顯示的原理和方法,並採用visualc + + 6 . 0 + mfc + opengl軟體結構編制了相應的程序,使魚雷最終能夠直觀的,以圖象信息表示出其隨時間和空間變化過程,即以立體圖象呈現在研究者面前,從而能夠更為方便地模擬和計算,對魚雷彈道的研究和設計具有十分重要的意義。Through the studies of the invariants of the single axis motions, computational theories have been developed in this thesis to provide practical solutions for the problem of structure and motion from fitting the corresponding points in the whole sequence to its conic locus or conies for short. it is then shown that all single axis geometry can be directly computed either from one conic and one fundamental matrix or from at least two conies. the rotation angles then can be calculated directly from using the laguerre formula
本文通過詳細分析單軸旋轉運動中的不變量,利用物體點在單軸旋轉運動中軌跡為圓,而在圖象平面的投影為二次曲線的這一特徵,以二次曲線為分析的基元,研究了求解單軸旋轉運動結構問題的新理論和一系列新演算法,並在此基礎上完成了物體的三維重建等工作。The system makes impedance measurements using an array of 32 electrodes on the surface of the body, and reconstructs the images using a veighted backprojection algorithm
該系統採用32體表電極進行阻抗測量,用加權反投影演算法進行圖象重構。Based on spiht, no lists zerotree coding algorithm ( nls ) has been put forward to be applicable for hardware implementation. simple in structure, small in storage space, the nls algorithm is very close to spiht in the quality of reconstructing image
本文在spiht的基礎上提出了一種適于硬體實現的無列表零樹編碼演算法,該演算法結構簡單,存儲空間開銷小,而且重建圖象質量僅略遜于spiht 。In chapter one, a survey is given on the model reconstruction from medical images, includes the origin and pre - processing of medical image, segmenting, general key techniques of 3d medical reconstruction, simplifying of meshes of the models. then explain the background of the theory of chinese medicine acupuncture
第一章緒論部分對虛擬人體的模型構建技術,即醫學三維重建技術進行了一個綜述,其中包括的內容有對體數據的來源的說明,對醫學圖象的預處理,分割,常見的醫學三維重建方法,模型網格簡化方法進行了簡單的描述。In order to assess the performance of the proposed methods, we propose three types of image measures to quantify the performance compared to some other methods. the first type evaluates the fidelity of the reconstructed image by computing the peak signal - to - noise ratio and euclidean distance in cielab color space between the original and reconstructed image in smooth and edge regions respectively. the second type accounts for a major artifact ? zipper effect
為了評估演算法質量,本文採用了三類評估手段:一是分別計算原始圖像與重構圖像在平滑區域與邊界區域的峰值信噪比與cielab顏色空間的歐氏距離來分析重構圖像的保真度;二是利用數學手段對重構圖像的一類主要失真現象? ? zipper效應進行定量評估;三是對硬體實現的成本與實際可行性進行了分析。2 ) the embedded zero - tree wavelet algorithm, which is proposed by shapiro, is analyzed. regarding to its shortcomings, a new quantization method based on zero - tree is presented. in addition, this method needs to match the hvs characteristics
2 )仔細分析了shapiro的嵌入式零樹編碼演算法,根據其在量化過程中存在的問題,提出了一種改進的零樹量化演算法,並在量化過程中充分考慮了人的視覺特性對于重構圖象質量的影響。Through anatomizing ezw coding algorithm and taking the effects of human being ’ s vision characteristics on quality of reconstituting image. a improved zeretrees algorithm are put forward. at last a new image compression encoding algorithm based on wavelet transform and vector quantization is put forward. the experiment show, in very low bit rate, using the proposed algorithm, the reconstructed image is superior to that of ezw in both of perception and psnr
最後,在小波樹的基礎上,通過對矢量量化的研究,本文提出了一種基於四叉樹結構新的小波樹矢量量化壓縮編碼演算法,實驗證明,在較高壓縮比的情況下,使用此方法得到的重構圖象質量(視覺效果和峰值信噪比)比通常的小波壓縮演算法有了較大的提高。At the same time, the main advantage of the encoding method, which can allow a target bit rate to be met exactly, is that the encoder can stop encoding at any point
另外,本方案還有一個明顯的優點就是可以在任意一點結束編解碼,從而可以根據對重構圖象質量的要求動態調整壓縮比。分享友人