Menu rConvert
Conversion operations and tuning

Vector (keep raster)...
Vector (erase raster)...
Erase raster...
Smooth raster...

Toolbar: Raster to Vector

Menu: rConvert > Vector (keep raster), rConvert > Vector (erase raster), rConvert > Erase raster, rConvert > Smooth raster

Description: Commands to set a tracing mode that defines an operation made on the original raster object and the produced vector object. Every command has a submenu, listing tracing commands (see next section).

The Create vector and keep raster mode creates vector objects and does not delete the original raster. This mode is used by default

Create Vector and Erase Raster mode creates approximating vector objects and removes traced parts of raster lines (on the figure above the resulting hatch is shown with blue lines).

Erase Raster without Producing Vector mode removes traced parts of a raster line and does not create vectors. The intersections or the parts of other raster objects under traced data are left intact.

Smooth Raster mode removes traced parts of a raster line, creates an approximating vector, and then automatically rasterizes it. Thus the Smooth raster mode allows you to correct raster lines

See also:

OPTIONS TAB

Options that control recognition, selection and tracing of raster objects - lines, arcs, circles and poylines and also texts and arrows. To specify dimensions of object enter the values separated by comma or press the Measure button and draw bounding rectangle around the arrow.

Min Length - this parameter defines the minimum size of a raster object that can be recognized.

Max Width - this parameter defines the maximum width of raster lines that can be approximated by lines, arcs, circles, and polylines. If the width of a raster line exceeds Max Width, the only possible mode is Auto tracing and approximating with an outline object.

Max Break - sets the length of the maximum ignored breaking raster lines. If a raster line is broken into parts and you want to trace this line as an entire object, the value of Max break should be greater, the largest gap between the raster line parts. The program will ignore the breaks and create single vector object, approximating the whole raster line.

Text Height - specifies the maximum height of raster text symbol of the upper case

Arrows - width and length of object that must be recognized as arrowhead at the end of line object.

Approximation Accuracy - this parameter determines the accuracy of approximating of the original raster object with a vector one.

Orthogonalization - if this option is on, the tracing in Auto and Line modes aligns created segments either perpendicular to or parallel with the base direction if the deviation of the original object from these directions is insignificant. The base direction is set in Base angle. The accepted deviation is determined automatically by the Approximation Accuracy parameter value.

Base angle - angle that specifies the base direction of orthogonalization.

SEPARATE TAB

In the SEPARATE TAB you can control the properties of created vector objects: calibrate the widths of obtained vector objects, place vector objects corresponding to raster lines from the specified ranges of width on new layers and/or assign various colors to created objects.

TRACE TAB

Represents parameters controlling the procedure of tracing polylines.

Line Follow Orthogonalization - if this option is on, the line following tracing automatically aligns segments of created polylines perpendicular to each other. Segments become either perpendicular or parallel with the base angle, if they are do not skew much from these directions.

Auto estimate base angle - sets the mode which automatically defines the base direction of polyline segments orthogonalization. The base angle for each traced polyline is defined separately.

Base Angle - angle that specifies the base direction of orthogonalization.

Auto Detect Direction - sets the mechanism by which the program will automatically define the direction of tracing.

Pause - sets a period in seconds, during which you should choose a segment to extent tracing when the Auto Detect Direction mode of tracing is on. Unless the user manually specifies another extension during this time interval, the program will continue tracing in the automatically selected direction. Setting Pause to 0 disables this option.

Place vertex on nodes - if this checkbox is on, when tracing polylines the program inserts vertices at intersections of a generated vector polyline with raster objects (nodes).

Auto Extend vectors - simplifies forced selection and tracing of arcs and lines.While recognizing a line you can click two arbitrary points on it; and WiseImage automatically extends the resulting line to its endpoints.While recognizing an arc you can click three arbitrary points on it; and WiseImage automatically extends the resulting arc to its endpoints.

Export single contour - tunes the performance of outline tracing. If the checkmark is on, tracing creates the outer contour of the object. If the checkmark is off, tracing yields the outer contour and the inner one, if there are "holes" in the raster object.

TEXTS TAB

Setting up the options of WiseImage Pro OCR module.

Orientation - defines the accepted raster text orientations on page: Horizontal only, Horizontal and Vertical or Arbitrary.

Overlapped by Graphic - if this option is on, WiseImage Pro searches for raster texts crossing other raster objects.

Standalone Letters - Allows searching for standalone text characters. If this option is off, WiseImage Pro will not find single text characters, and will not identify graphics objects as text, such as markers, dash, etc.

Patterns - pattern is a rule specifying an allowed sequence of characters within one recognized word. For example? "%DV" allows the generation of the following strings: "5V", "220V", "13.8V", etc.
WiseImage Pro OCR can generate only words which correspond to one of the specified patterns (if Patterns is checked).

Height Table - you can specify possible text heights in this box. If the checkbox is on, then during the generating of the recognized texts the OCR module will create text objects with heights from this list, rounding the recognized height to the nearest value specified in the list.

Template file - sets a file of character template libraries, which is used on recognition. Character templates are topological models of text characters (letters, special symbols etc.), with which raster text characters are recognized.
During the training process, the OCR creates character templates and writes them in the library. You can save character templates in an existing library file or create a new one.

Place to Layer - sets the name of a layer, on which the texts obtained as a result of the OCR operation will be placed.

SYMBOLS TAB

Maintains the list of vector templates used for procedures of selection, tracing, and automatic vectorization of raster symbols. Also controls recognition options.

Templates list - lists all defined symbol recognition templates. The attached templates are denoted by "X" sign.

Strategy - 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.

Accuracy - 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.

Fixed scale - sets the tolerance for recognizing symbols of various sizes. If the checkbox is on, 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, 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.

Orientation - sets possible angular deviations of raster symbols from the specified templates. If the value Horizontal is selected, 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.

Standalone Symbols - defines whether the symbol containing raster objects excluded from the template will be recognized. If the checkbox is off, 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.

V2R Options

Toolbar: WiseImage

Menu: rConvert > V2R Options

Description: Associates a certain width value with each AutoCAD color. These values are used when rasterizing vectors.

For all AutoCAD objects the width can be specified using the Lineweight attribute. You can use this value to rasterize vector objects as the width of a raster line obtained. You can also specify the correspondence between an object color and a raster line width, obtained after its rasterization. Then all AutoCAD objects of the same color will be converted to raster lines with the width corresponding to their color.Note that for some vector objects there is no sense in specifying the rasterization width. These objects are: polyline with width, solid, fill, TrueType text. If you rasterize such objects, you obtain raster objects of appropriate shape.

Menu rConvert Conversion operations and tuning

Menu rConvert
Conversion operations and tuning