You are here: Our product What's new Easy Trace Pro 8.1 1151

Easy Trace Pro 8.1 1151

New in ET 8.1 build 1151 от 25.11.2005

  • Effectiveness of automatic and semiautomatic tracing of color images depends directly on successful extraction of black-and-white images (thematic layers). A new utility Subject Layer Extraction is elaborated for this purpose. It is based on domination of one color from the R-G-B palette in most of thematic layers.

    This utility may be used for both direct forming of thematic layers and complete background suppression. It is particularly effective for capture of color information drawn on gray-scale materials (air-photos for instance). The illustration represents the same fragment of an image with a dense contour coverage before and after application of the utility. Final extraction of contours into a new layer can be accomplished by the Binarize Utility followed by mask filtering.

  • The set of mask filters for lines 3-5 pixels wide is added. The Thick isolines and Very thick isolines filters are available now besides the previous Thin isolines one. The Regular artifacts filter is shown as an example. It takes several minutes to create such a filter and results of filtering are evident.

  • Forming of a relief digital model on the base of contour lines is a complicated task. Automatic tracing may speed up the process in several times – but only for relatively clean images. New means of raster skeleton post-processing added to the Autotrace Lines utility make demands of image quality much lower.
  • The approach to selection of "branches" and "bridges" is entirely changed. New options are added for skeleton cleaning from small loops and X-shape adhesions. Control on angular criterion at search of undesirable lines is provided.

    Joining of pseudo-nodes after deletion of "branches" and "bridges" has become much more intelligent. Most “dirty” segments - ends of torn lines may be now deleted with the “vector eraser” without use of the “shears”.

  • A new function is added to the Topology Check-up Utility – search of multiple nodes. Cleaning before the Gap Removing operation implies deletion with the Editor all indeterminacies that appear at nodes joining 3 and more lines together. The Utility marks these nodes that may be placed to the center of the screen with the help of the F and V hot keys of the Editor.
  • The Gap Removing Utility is completely revised. Previously, the number of correct joints fell abruptly for image lines thicker than 3 pixels. The current version of the Utility completely excludes cross-joining, and the percentage of correct joints has increased significantly.

    Possibility of joining of neighboring lines (at sheet border and similar situations) has become smaller. A new option is added – Don't merge (insert separate segment). It enables deletion of wrong joints with one move of the “vector eraser”. Restoration of a curve line lost part at merging is also improved.

  • The Topology Correction Utility is altered. The attempt to bring up the ends of contour lines to the map frame could resulted in "adhesion" of neighboring polylines previously . The flags "Consider polyline ends only" and "Consider polylines of different layers only" are added to the utility.

  • The Topology Correction Utility: Bringing up of a polyline's end segment to crossing with a polyline of another layer preserves direction of the segment.
    Initially Was in V8.0 V8.1

  • Optimization of line form after automatic tracing is revised. The filter for optimization considers now irregular vertex-to-vertex distance. Thus, line form correction is possible not only for dense but also for sparse parts of the line (for example, after manual joining and editing). Besides, filtering may be multiple.

  • Polyline Editor: you may select the "shears" mode of the Editor with the help of the hot key (W by default) without previous selection of the Editor itself. In other words, you may change "vector eraser" for "shears" by one press of the hot key.

  • Polyline Editor: to change shear's modes (with/without deletion of the end segment) – press the Shift key (instead of Ctrl) once. The last used mode will be current at the next selection of the tool. Previous modification of the mode at Shift pressing (cutting at the nearest vertex) is canceled - it is enough to point the vertex with the "sheares". Besides, when in the cutting mode, the Editor now ignores all objects but polylines at the cutting point.

  • Group Sheares: previously the program canceled cutting if you tried to use the "hand" for image panning after cutting polygon defining. Now you may easily pan your image and specify any number of cutting polygons.

    • a prompt is added about possibility to use polylines as ready boundaries of cutting areas. Keep the Ctrl key pressed at line specifying as a cutting boundary;
    • the cursor becomes the arrow when you press Ctrl.

  • Group Sheares: Navigation by error marks is provided now with the help of the F and V hot keys (similar to the Editor).

  • Z-input tool: if you assign Z-values to contour lines previously attributed to different layers (intermediate, index, etc.) you will like contour displaying applying line type specified for the layer (for example, dashed lines for supplementary contours). Besides line width may be specified for every layer in the Parameters dialog box of the Z-input tool. Line attribution to different layers takes only several minutes if you use the Group Editor but save you from errors at Z input you will probably be searching for hours .

  • Z-input tool: the tool automatically suggests to attribute an isoline to the proper layer (intermediate, index or supplementary contours) if necessary. You needn't take the Editor for it and thus the operation speeds up significantly and serves as additional control of Z-value correctness.

  • Z-input tool:
    • the new Single touch mode allows to input Z-value with one click (use the Shift key to change the mode);
    • icons and cursor symbols are changed;
    • when in the Contour crossing mode, the layer of the first captured object becomes current;
    • Shift does not influence any more on the direction of Z-value change (increase or decrease). Instead, use the mouse lefr key for increasing values and right key for decreasing;
    • at layer change or height change requests, the cursor automatically comes to the OK button and returns to the line when clicked;
    • if you press Ctrl at line crossing, the first crossed line will be attributed to the layer of supplementary contours;
    • the tool has a hot key now (Alt+Z by default).

  • Z-input tool, Topology Editor, Shears, Eraser of vector objects: :
    • error-to-error navigation is added with the help of the F and V hot keys.;
    • right click to delete the selected error mark.

  • Z-Check-up utility is completely revised. Now it forms a triangulation net via all reference points and middle points of all the contour lines and controls correct elavation alternation along the net edges:

    • the option "Generate Z-inscriptions where errors are found" is deleted from the dialog box (automatic generation is provided now);
    • after the check, the utility starts the Z-input tool and select an error mark;
    • you may now specify a boundary layer - sheet frame for example, or other lines crossing contours. If a segment (an error mark), which connects objects with incorrect Z-values crosses any polyline attributed to this layer, the error will be skipped (not added to the _ERRORS_ layer).

  • There are problems sometimes at closed polygon forming after tracing in the Outlining mode if the contour is crossed by "parasitic" lines (grid lines for example). Then it is impossible to use the ability to extend/compress contours, provided for the tracer. An individual Closed contour resizing tool is created for post-processing of such polygons. You may now trace and edit preliminary "lake coast" or "forestry border" and then compress or widen these contours.

  • Diagnostics is improved at automatic grid forming by vertices of a closed polygon (frame of the map sheet). If grid generation is impossible for the specified polygon on some reasons, a message appears with explanation of the fault .

  • Autotracing area specifying:
    • a prompt is added about possibility to use polylines as ready boundaries of autotracing areas. Keep the Ctrl key pressed at line specifying as a boundary;
    • the cursor becomes the arrow when you press Ctrl.

  • Hot key adjustment: if the specified key combination is already assigned to another command, you will see a request for confirmation of the change.

  • Topology Correction Utility: at start, checks if correction strategies include "frozen" layers and suggests to unfreeze them, otherwise the layers are excluded from the strategies.

  • Error mark deletion: an option is added to the dialog box which enables switching on/off entire groups of error marks.

  • Bookmarks (up to 8) are provided for both image and vector documents. The bookmark in Easy Trace is a combination od scale and working window position. Bookmarks noticeably simplify systematic check of vector data.
    • (Ctrl+F5) to insert;
    • (F5) to move to the previous one;
    • (Shift+F5) to move to the next one;
    • you may delete all the bookmarks at once;
    • the bookmarks are saved to the ini-file of the project.

  • A hot key is provided for the Line direction view mode (F9 by default);

  • The Unverified object indication view mode is alternated - now unverified objects looks as usually and verified ones are grey and their vertices are not highlighted even when the Polyline Vertices mode is on.

  • The "Selected objects" option is added to the "Mark objects as (un)verified" dialog box. It helps to verify attributes of objects selected by the Group Editor by any criterion..

  • Alt + right click now instead of Ctrl + right click to open context menu of raster layers (Show/hide raster layer, Open raster, etc.). The menu itself is completely revised.

    Upper part - the list of raster layers underlying the current cursor position. The flag indicates if the image is switched on or off. Correspondingly, selection of the layer name changes its status (switches off/on). The lower part contains the list of operations available for the "topmost" switched on image.

  • Alt + left click in the project field "drags up" the undermost switched on image underlying the current cursor position to the top of the layer list. This option is particularly useful at vector data joining along a boundary.
    On a big raster field, apply Alt + left click twice to make the bordering raster layers the first and the second in the list. Later you may switch them on/off using the Alt+1 and Alt+2 combinations. Previously you had to open the Project Layer Settings dialog box to rearrange the layers (and to recall their names first).

    There is a limitation though: all the above is true if all the images in your project are black-and-white or color. If the project contains images of different kinds, the displacement takes place within the group: the color raster will not be the first in the project but the first among color rasters.

  • The Topology structure optimization utility is added - it deletes superfluous vertices from the specified layers but completely (!) preserves topological coherency of the polygonal cover as well as linear and point objects connected with it. The utility not only "unloads" the project (up to 60 000 vertices may be deleted!) but makes straight fragments really straight (i.e., specified by two vertices).

  • Bug fixed: use of the Unsharp Mask or Diffuse filters at a very large scale could lead to abnormal termination of the program.

  • Bug fixed: tracing tools "forgot", which tracing strategy was current.

  • Bug fixed: direction of unclosed polylines could be alternated at export to SHP sometimes.

  • Bug fixed: direction of holes in complex polygons was wrong sometimes at export to MDB .

  • And the last but not the least – we already apply some elements of the next, cardinally new ET-9.0 version at execution of orders for tracing. So, the new program is coming...
More in this category: « Prev Next »