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CAD design, kolkata, CAD consulting, India, drawing conversions, paper to CAD
 
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CAD design, kolkata, CAD consulting, India, drawing conversions, paper to CAD
CAD design, kolkata, CAD consulting, India, drawing conversions, paper to CAD
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Electronic Drawing Conversion

Dassnagar has converted thousands of paper drawings to electronic editable CAD format. In the case of tax maps, the drawings are frequently translated and rotated to represent the true world location of the properties in question which may be viewed in conjunction with other similarly referenced features and imagery in a GIS setting.

Why CAD converted files and not paper drawings or image formats?

The content of a paper drawing may be preserved by creating an electronic scanned image of the document. This is all that is necessary for documents that need to be preserved for historical significance. But what about all those drawings that undergo periodic revision and updates? For these instances, an electronic CAD version of the drawing is the only solution.

We generally follow three types of drawing conversion methods:

Precision redraw

Professional draftsmen read the dimensions, bearings, distances, or coordinates from an original drawing and create a precise CAD or GIS model to the specified dimensions. Accuracy is limited only by the information on the original documentation - even here, missing information may be derived or incorrect data corrected by Architects and Engineers. Experienced professionals involved in every step of the process ensure that anomalies are corrected as the conversion is performed. Complex interpretation of source documents can also be accomplished based on the requirements of the project. This is the most time consuming and costly method of conversion.

Tracing - standard heads-up digitization

The operator re-creates each drawing from the original raster image by tracing the original drawing. The result will look almost exactly like the original and if compared on a light table, they will register closely. Accuracy is limited by, operator proficiency, the equipment and the quality of the original image. This method is used where the original is a scaled drawing without dimensions such as topographic maps.The operator re-creates each drawing from the original raster image by tracing the original drawing. The result will look almost exactly like the original and if compared on a light table, they will register closely. Accuracy is limited by, operator proficiency, the equipment and the quality of the original image. This method is used where the original is a scaled drawing without dimensions such as topographic maps.

Automatic Conversion Enhancement

This method uses a scanner to create a raster image of the drawing and then uses a software application to convert the raster image to a vector image. A professional review of each document is necessary in making appropriate revisions. There are many quality issues involved in automated conversion.

For a custom CAD quote, email us at dpepl@cal2.vsnl.net.in or call us at +91 9831262564.



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