Autodesk 05726-091452-9060 User Guide - Page 207
Symbol tab
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13 Vectorization Symbol tab The table provides the description of symbol recognition parameters. Parameter Srtl path Strategy Fixed scale Accuracy Orientation Standalone Symbols Description Defines the path to Symbol Recognition Template Library file which stores symbol templates and the information on what symbols should be found and with what they should be replaced. Defines the strategy used for symbol recognition. The choice of strategy influences the balance of speed/accuracy of the algorithm. There are three strategies: Fast, Standard and Smart. Fast strategy has the highest speed of the raster symbol analysis, but it may not find symbols even very similar to the template. Smart strategy operates at the lowest speed, but yields the most correct results. Standard strategy is used by default. This parameter sets the tolerance for recognizing symbols of various sizes. If the checkbox is on, then only the symbols whose sizes are proportional to templates with the factors set in the numerical box will be recognized. When replacing the recognized raster symbols, this factor will be used for scaling the inserted vector symbol. If the checkbox is off, then all raster symbols will be checked on tolerance, and the scaling factor on replacing will be calculated automatically. In this case the program operation may be slowed down. This parameter defines the accepted deviation of raster symbol geometry compared with to the sample. At High values, the program will only recognize symbols that are very close in form, scale and orientation to the sample. At Low values more symbols will be recognized but the probability of erratic recognition increases. Sets possible angular deviations of raster symbols from the specified templates. If the value Horizontal is selected, then only the symbols having the same orientation as the specified templates will be recognized; if you select Horizontal and Vertical, the symbols rotated by an angle 90° will be recognized; if you select Arbitrary, the symbols rotated by arbitrary angles will be recognized. The last option considerably slows down the operation of recognition algorithms. This checkbox defines whether the symbol containing raster objects excluded from the template will be recognized. If the checkbox is off, then all symbols matching the template will be recognized, even if they are crossed by raster objects that do not match objects, set in the template. Otherwise only symbols that are not crossed by other objects will be retrieved. 213