The City 3D View Model Based On Digital Photogrametry

City the 3D view is closely-related with the construction ofthe numerical city. In the programming the design and the programmingthe examination and approval, because of program the numeral of theresult turn and can see to turn, making to various quantitativeanalysis that program result and project and imitating to makepossible with estimate. The city planning design examination andapproval's can carry out can see to turn, the key lie in how makeuse of 3D set up a mold at present with can see to turn a technique,realization to the city present condition and program the fastestablishment of the 3D model .Provide to design to manage the itemexamination and approval with city planning to keep a view to thecity planning in the meantime of, viable can see to turn an assistancemeans. The work that wants to attain an above-mentioned purposedemand to carry on to do have:1.The data obtain: Mainly include aground of thing to sit mark(X, Y, Z), roof and the wall noodles veinsetc.s;2.Build up DEM and is project image to be like diagram: Bemainly used for solving geography, ground to overlay with theveins;3.Establishment database: The organization and managementdata;4.Build up the 3 DGIS or 3D model: The realization is 3D andcan see to turn;Carry on the analysis of the 3D model and theemulation of the programming project.Can see from here, an important problem of the city planningconstruction is the city foundation space information to obtain. Makeuse of the numeral's photographing the diagraph technique can obtainto include numerical line to row vector diagram, numerical highdistance model with is shoot to cast shadow diagram at inside of cityfoundation space information. Numerical line's rowing the vectordiagram(DLG) is the most form of the city basic diagram piece, isthe foundation information that builds up various geographyinformation system. It is alsoThe foundation that carries on programming, design,management...etc.. Numeral's photographing to measure system cansurvey and map various numerical line that correspond scale to rowdiagram. Make use of numeral to photograph to measure the auto airthat the system provide triangle measure at inside of the wholesolution, image match the technique and variety to measure thediagram mode efficiently and practically, can raise the homeworkefficiency consumedly. The numerical high distance model is one ofthe foundation informations that builds up numerical city, is thefoundation information that depends on to set up a 3D view of cityand carry on various engineering to design. The numeral photographsto measure system to have an auto large-scale produce DEM,automatically born contour line in maps etc. function, can raise theefficiency of the born contour line in maps. The numeral is projectimage to be like diagram is cast shadow to the center according tothe numerical high distance model of the sail photograph to be liketo carry on rectifying a processing and removed to cast shadow badof the perpendicularity cast shadow of image map. Because it includesvarious original information of the earth's surface, and passes torectify a processing, the scale is accurate with related position,can used for various realms, such as, city planning, environmentalprotection, and the resources investigate, disaster prevention andmilitary etc.s.This text makes use of the total amount word to photograph tomeasure the work station VirtuoZo NT system, the aviation is likethe slice as original data, the logarithms word photographs thediagraph technique in the city planning foundation space informationobtain of the application carried on a research, main the work andresult is as follows:(1)Measure the area is like a slice of ground control point to sitthe object diagraph, being studying cloth inside the district toestablish and prognosticate 6 control points.(2)Be like a slice to carry on preparing a processing to the aviationthat scans behind, the main work includes the conversion of the imageformat and measures the establishment, model of the area and modelalready decided to, model the opposite definite direction, absolutedefinite direction, image match and editor etc. after match.(3)The born DEM and DOM, and carried on partition to the born DEMand the DOM.(4)The numerical line rows diagram(DLG) to survey and mapMake use of the 3D GIS software IMAGIS in addition, data acquiredaccording to the above-mentioned work to the research district insideof have already had building to carry on 3D set up a mold, and carriedon a dissimilarity a programming the emulation of the project.