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6 application(s) found

Survey


    • The Standard version is suitable for all kinds of surveying, terrain profile and volume calculation projects. Its main users include the public administration, construction companies, engineering firms, architects, town planners, companies dedicated to earthworks, quarries, mining firms, environmental companies etc., as well as independent professionals. Surveying Points The program begins with the coordinates, which are obtained from any total station or GPS, by converting files from data collectors or from other application through a powerful format manager. It has a CAD-independent point viewer, with viewer controls, 3D orbit etc. Points are intelligent CAD objects. That is the reason why they can be deleted, moved, changed to another layer, and so on, by using conventional commands or blocks with attributes, thereby facilitating its compatibility with other CAD applications or systems. Additionally, any kind of editing operation can be executed, such as: interpolating, changing heights, sorting by levels, filtering, assigning codes, labeling coordinates, grouping points, changing their visibility, and so on Coordinates can be changed by using an editor, which is similar to an electronic sheet. Selection can be made by number, level, height, group, code or graphically. Each point can be associated to a document, ...

    • It features functions that allow working with projected and local geographic coordinate systems, including support for multiple ellipsoids, datums, projections and geoid models. This module integrates the geodesic parameter database of the OGP (International Association of Oil & Gas Producers, formed in 2005 after merging with the EPSG - the European Petroleum Survey Group), featuring hundreds of coordinate systems and transformations of geodesic and vertical datums from all the regions around the world. MDT includes the cartographic project library PROJ.4 as well. Its powerful geodesic calculator is very useful for most common coordinate transformations. The software converts most of the files obtained from total stations and data collectors. The distinction between points and stations can be configured based on their numbers or codes. Using an editor helps to filter and classify observations. MDT computes coordinates by radiation, inverse bisection, direct intersection, inverse intersection and leveling procedures. It draws points and stations as well. It calculates the disorientation of reciprocal observations and instrument angle errors (azimuth and zenith) for direct-inverse circle observations. When calculating average distances and height differences, it can apply adjustments to measured points which are computed from observation equations. Other optional corrections are atmospheric factors, refraction and sphericity, distance reduction to horizon, sea level and reduction to ellipsoid. MDT can make itinerary compensation (closed, open or linked to one or more fixed points), as well as network compensation by different methods: using angles, distances or both, by least squares, proportional to coordinates, proportional to distances, Crandall’s Law, or rotation and homothety. Observation data can be shown in total station or theodolite modes, choosing for display horizontal or geometric distance, vertical angle or height difference. It can perform the following coordinate transformations methods:  • 2D: XY translations, Helmert 4 parameters, Affine and Projective. • 3D: XYZ translations and Helmert 7 parameters. • 2D+1D: Helmert 4 parameters + Z Displacement and Helmert 4 parameters + Z Displacement and Gradients in XY. The transformations can be created by parameters, points or import of origin and destination coordinate files. ...

    • Orthophotos MDT Images inserts in the current CAD drawing one or several orthophotos with most common formats (see requirements) at their real coordinates. Aerial Photographies and Scanned Maps There are different options for geo-referencing images, so that real terrain coordinates are assigned. The simplest option consists of drawing reference lines for connecting known points over the image to points on the CAD drawing. For more complex cases you can insert marks with names and then link them with topographic points. Pictures with Location MDT Images allows you to insert pictures in miniature with information about their location to the current CAD drawing such as the photos taken with smartphones and cameras with integrated GPS. Each photo is automatically linked with a topographic point, and also you can insert the picture with the scale chosen by the user at its location, in the same way as Google Maps. The EXIF information which contains in each image can be retrieved at any time. WMS Maps You can connect MDT to any of WMS services (Web Map Services), download an image and insert it in the current CAD drawing at real coordinates (cartographic institutes, cadaster, and other public and private organizations). Operations on images This module includes basic transformations over the images, such as turning, rotating, adjusting brightness, adjusting contrast, adjusting hue, adjusting saturation and adjusting balance colors. Also you can modify the size of the image, resolution and color depth. Other useful tools are: delimit a image with a boundary (closed polyline), divide a georeferenced image on sheets and paste a group of georeferenced images into a single final image. Distort Image By using reference lines or marks you can distort an image by two methods: projective transformation or rubber-sheeting. The projective transformation will adjust a maximum of four control points, independently of the number of those used for calculation. The rubber-sheeting technique is a bilinear transformation of each one of the image pixels, computed from pairs of origin and destination points. This technique will adjust all control points involved in the calculation. The resulting images are created by using one interpolation method: next neighbors, bilinear, bicubic or Lagrange. As a result the mean squared error will be shown as well as maximum residuals.

    • This system allows the visualization in stereoscopic mode of analogical and digital aerial photographs, previously orientated. To see stereo you can use anaglyph glasses or professional stereoscopic vision hardware. It is especially useful for public administrations, mining companies, landslide, hydrology, environment, town planning, etc.
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