攝影基線 的英文怎麼說
中文拼音 [shèyǐngjīxiàn]
攝影基線
英文
photogrammetric base-
In the self - calibration scheme, the thesis emphasizes the accuracy of camera intrinsic and extrinsic parameters. we presents an accurate f method based on corresponding point adjustment. the method adjusts coresponding points according to the fixedness of projective transformed cross ratio, then calculates f matrix accurately through linear and non - linear methods. when computing intrinsic parameter, a matrix, we simplify the step, and stress on the two important parameters of a. the result will be getten through solving kruppa equation based on svd decomposition. in order to compute extrinsic parameters, we use linear method to get initial r and t, then apply non - linear method to accurate them
提出了基於匹配點調整的f求精方法，先根據攝影交比不見性對手工選擇的匹配點進行調整，再用線性、非線性結合的方法求精f矩陣；在計算內部參數a中，進行了一定的簡化，把重心放在a中重要的兩個參數上，用svd分解法計算kruppa方程；在計算外部參數時，首先用線性法求解r 、 t ，然後再用非線性法迭代求精。Manual measure tools, such as micrometer were used to measure outside and inside diameter of tube product, which is effected by people factor and has long measuring period and low precision and dose not fulfill the on - line measuring need of batch production. so, according to the product line structure of tube product, the on - line measuring method with linear ccd is brought forward in this article and imitating operation is done by the mentioned method
傳統的對管狀產品的檢測方法是利用千分尺等工具手工測量，測量周期長、準確度不高且受人為因素影響大，不能滿足批量生產的在線檢測要求。為此，本文根據所研究管狀產品的生產線結構，提出了一種以線掃描ccd攝像機為基礎的在線檢測方法並對此方法進行模擬計算。Thirdly, an ideal satellite orbit is simulated, and on this foundation, we establish some typical simulation and testing circumstances. lastly, after simulation in the simulation and testing circumstances, we compare the performance of ukf and ekf. and then, based on the outdoor experiment of the vehicle, an analysis and contrast between our simulation results and commercial data process software is carried out, and the conclusion is obtained
首先在第三章提出的目標運動模型的基礎上建立了系統狀態方程;其次簡要分析了衛星導航系統中的各類誤差，建立了基於偽距觀測量的系統觀測模型;第四節利用yuma格式歷書數據模擬了未受攝動影響的衛星軌道，並在此基礎上建立了幾種典型的動態模擬測試環境;第五節為模擬分析和比較，先對ukf演算法和ekf演算法在動態模擬測試環境中進行了模擬比較，然後針對外場試驗，對非線性濾波獲得的定位結果與商業軟體進行了分析比較，並得出結論。Over the next 18 months, cameras will be installed in all metro carriages and in the stations of one of the main lines around the center of the capital, the metro ' s director, vladimir gayev, said
在未來一年半的期間，攝影機將安裝在所有的地鐵車廂，以及首都市中心區其中一條主要干線的地鐵站內，地鐵處主任弗拉基米爾加佑夫說。Based on the review, the fluid flow and heat transfer in the curved circular and rectangular pipes have been researched by employing perturbation method and numerical simulation with a physical model under the rotational orthogonal curvilinear coordinate in a rotating curvilinear pipe with multi - parameters. we firstly analyzed the fully developed fluid flow and heat transfer, mixed convection heat transfer, the development of flow and heat transfer in the inlet in different cross section ( circular, elliptical, annular and rectangular crossection ). the variations of the secondary flow, axial velocity, distribution of temperature, the friction force on the wall, the ratio of friction factor as well as the nusselt number with different dimensionless parameters had been examined in detailed
本文在總結和分析了一個世紀以來有關曲線管道流動和換熱特性的研究成果的基礎上，以旋轉正交曲線坐標系統下的多參數旋轉螺旋管道中的對流傳熱為物理模型，通過攝動方法和有限體積法，首次對各種截面（圓截面、橢圓截面、環形截面、矩形截面）旋轉曲線管道內充分發展流動的流動結構和傳熱特性（包括耦合對流傳熱特性）以及旋轉曲線管道開口段發展流動的流動結構和換熱特性進行了系統的數值模擬和理論分析，詳細討論了各種無量綱參數對管道內軸向速度分佈、二次流結構、溫度分佈、壁面摩擦力、摩擦系數比以及管道nusselt數的影響，獲得了若干創新性成果。The method is then used to analysis the pulling stress of the film. 3 ) under the above nonlinear dynamics analysis, an optimized design has been firstly realized under virtual manufacturing environment
3 ）在非線性動力分析的基礎上，首次在虛擬製造的條件下，實現了高速攝影機抓片機構的優化設計。Although there have been many application instances in the field of input / output device technology, we need an specific project and technology route aimed at an given application. in this thesis, we combine the introduction and analysis of relative technology to describe the accomplishment of a coordinate collecting device which is based on incremental rotary encoder. this device is an specific device applied to collect the corrdinate displacement of ground image ’ s three - dimensional model created by full digital photogrammetric station. cpld chip and vhdl are applied in this device to carry out the following work : phase control of the electrical pulse created by incremental rotary encoder, counting the number of electrical pulse, controling the state of signal processing circuit, exchanging data between this circuit and pci control
本文結合相關技術的介紹和分析，描述了一個基於增量式旋轉編碼器的坐標參量採集介面卡的實現，此介面卡是一種用於採集全數字攝影測量系統地面影像模型坐標位移量的專用設備，該設備採用cpld器件和vhdl語言實現增量式旋轉編碼器的脈沖信號鑒相和計數、信號處理部分的狀態控制以及和pci總線晶元ch365之間的數據交換和通信功能，同時該設備的驅動程序基於wdm模式，並且配置有結構良好的動態鏈接庫程序作為系統軟體和驅動程序之間的數據和控制交互中間介面，能夠方便地運行在windows98 / 2000 / xp操作系統平臺上，具有實時性強、工作穩定、通用性較好和性價比高等特點。Characteristic circle is adopted for characteristic mark ; a new concept, “ characteristic diameter ”, is put forward ; the length and the position of the characteristic diameter ’ s image is adopted for the basic “ characteristic parameters ” ; and a new “ resolving model ” is established based on perspective projection principle and the speciality of “ characteristic diameter ” in this article, so that the normal direction of target plane can be got without calibrating camera parameters in real time. it only need basic mathematic tools
本文採用特徵圓作為靶面上的「特徵標志」 ;提出了「特徵直徑」的概念，採用特徵直徑及其在像面上的透視投影的位置和長度作為基本的「特徵參數」 ;根據透視投影的規律，應用特徵直徑的特性，建立了新的「解算模型」 ，無須在現場標定攝像機的參數，只需採用基本的數學工具即可實時解算出靶面法線的方向。Abstract : this article summarized recent advancements of some outstanding new digtial systems for lungs radiiography, namely : digital radiography using wtorage phosphors, selenium detecting systems, realtime wubstractive radiography ect, and also an evaluation of some relevant monitors
文摘:本文總結了胸部射線攝影一些成就突出的新數字成像系統的近年進展情況，如：基於熒光儲存系統的數字射線攝影、硒探測器系統、即時減影技術等，並提出了對配套應用的幾種監視器的評價。Standard reference radiographs for investment steel castings of aerospace applications
航天設備的蠟模鋼鑄件的基準射線攝影It becomes possible that digital railway plan be used, which based on 3d terrain environment for the introduction of virtual reality and the wide application of digital photogrammetric survey
虛擬現實技術的引入和數字攝影測量技術的廣泛應用，使得基於三維虛擬地形環境的數字鐵路選線成為可能。Using the microwave selective heating property for materials, by setup equivalent equation, and first time inducing the electromagnetic field perturbation theory to the design of heating materials for substrate in mpcvd, three temperature distribution modes were established, including temperature distribution comprehensive mode of inhomogeneous plasma, temperature distribution composite mode of composite substrate materials, temperature distribution perturbation mode of composite materials, which ii provided an whole new technology route to the design of substrate heating system in mpcvd and guided the preparation of heating materials for substrate. and then the heating materials for substrate were designed and optimized to obtain large area homogeneous temperature distribution even larger than substrate holder ' s diameter. as an important part, this thesis researched the nucleation and growth of diamond films in mpcvd, systematically researched the effects of substrate pretreatment, methane concentration, deposition pressure and substrate temperature etc experimental technologic parameters on diamond films " quality on ( 100 ) single crystal silicon substrate in the process of mpcvd, characterized the films qualities in laser raman spectra ( raman ), x - ray diffraction ( xrd ), scanning electron microscopy ( sem ), infrared transmission spectra ( ir ), atomic force microscopy ( afm ), determined the optimum parameters for mpcvd high quality diamond in the mpcvd - 4 mode system
該系統可通過沉積參數的精確控制，以控制沉積過程，減少金剛石膜生長過程中的缺陷，並採用光纖光譜儀檢測分析等離子體的可見光光譜以監測微波等離體化學氣相沉積過程；利用微波對材料的選擇加熱特性，通過構造等效方程，並首次將電磁場攝動理論引入到mpcvd的基片加熱材料的設計中，建立了非均勻等離子體溫度場綜合模型、復合介質基片材料的復合溫度場模型及復合介質材料溫度場攝動模型，為mpcvd的基片加熱系統設計提供了一條全新的技術路線以指導基片加熱材料的制備，並對基片加熱材料進行了設計和優選，以獲取大面積均勻的溫度場區，甚至獲得大於基片臺尺寸的均勻溫度區；作為研究重點之一，開展了微波等離體化學氣相沉積金剛石的成核與生長研究，系統地研究了在（ 100 ）單晶硅基片上mpcvd沉積金剛石膜的實驗過程中，基片預處理、甲烷濃度、沉積氣壓、基體溫度等不同實驗工藝參數對金剛石薄膜質量的影響，分別用raman光譜、 x射線衍射（ xrd ） 、掃描電鏡（ sem ） 、紅外透射光譜（ ir ） 、原子力顯微鏡（ afm ）對薄膜進行了表徵，確立了該系統上mpcvd金剛石膜的最佳的實驗工藝參數。The flight layout method based on the orientation theory and the simulation process and technology of aerial photography are introduced, the influence of the simulation rehearsal on aerial photography is discussed
摘要介紹了一種基於定向理論的航線設計方法，利用設計結果實現了航攝模擬的技術與過程，討論了實現航攝過程模擬預演功能對航攝工作的重要影響。As a packing material, glass has many advantages that cannot be substituted, such as having plenty of raw material, being produced easily, low price, stable chemical quality, not reacting with its content and so on. so it is widely used in the packing of food, beverage and chemical things. but the producing way of glassware in our country hampers the development of glass industry
本論文以攝影測量學及直接線性變換演算法（ dlt演算法）為理論基礎構建了多維攝像運動分析系統，並根據人體上肢的剛體矢量運動模型提出了一種基於多維攝像運動分析系統的關節轉角求解方法，結合實際給出了一套用於測量人體上肢運動參數的規定動作，以便以後進行這方面的研究。The emergence of the ordinary digital images ( which in this paper means the digital images acquired by common non - metric digital cameras ), resolved the the problem of acquiring images quickly on the spot, and lowered the requirement for equipments and skills in photogrammetry, so that made photogrammetry a whole digital process. but all current ways to the measurement of ordinary images are based on dlt or bundles theory, which both require a lot of control points distributing properly, and are inapplicable. in order to increase the adaptability and accuracy of digital close - range photogrammetry based on common digital cameras, researches and experiments have been done on these methods in this paper, as following : 1
普通數碼影像（在本文中主要指採用普通非量測數碼相機獲得的數碼影像）的出現，解決了現場快速獲取影像的問題，且降低了近景攝影測量作業對設備及技能的要求，並使攝影測量過程成為全數字流程，但現有的對普通數字影像的量測處理演算法均是基於直接線性變換或光線束理論的，存在像控點要求多、分佈要求高、不適宜應用的缺點。Camera model is established above all. some methods of camera calibration, the epipolar geometry constrain and various computational techniques of fundamental matrix are systematically analyzed and compared in this thesis. we present a camera calibration algorithm by viewing a plane using reprojection
論文首先建立了攝像機模型，分析比較了幾種不同的攝像機定標方法、極線幾何約束關系和基礎矩陣的多種計算方法，提出了一種結構再投影平面模板攝像機標定演算法。A linear camera self - calibration technique based on projective reconstruction
基於射影重建的線性攝像機自標定方法Shortcomings cn400 film is the contrast between the weak and dye - tinted film is film - based, in natural light, the right to change the video transfer almost all color filter is not much reaction, this film is not suitable for outdoor natural light in the shooting
缺點是cn400膠片的反差較弱，染料型膠片是有色片基，在自然光線下，對能夠改變影調的各種濾色鏡幾乎沒有多大反應，因此這種膠片不適合於戶外自然光下的拍攝。分享友人