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99 lines
2.4 KiB
Plaintext
99 lines
2.4 KiB
Plaintext
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/*!
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\page shape_recognition_page Shape recognition from a picture
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\note
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<ol>
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<li>This functionality is not fully operational yet. It is provided for testing purpose and because it might already be helpful in some situations.
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(Do not hesitate to make feedbacks on possible bugs ...) </li>
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<li>The functionality is only available if SALOME has been built with the optional prerequisite OpenCV. </li>
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</ol>
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This tool allows you to automatically create geometrical shapes from
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pictures with help of shape recognition algorithms.
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<b>Contours</b> or <b>Corners</b> can be built.
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\b Example:
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Detection of the cost line on a nautical chart
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\image html contour_detection_example2.png
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\n
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To use the <b>Shape recogition</b> tool:
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<ol>
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<li>\ref import_picture_page "Import a picture" in the view</li>
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<li> Select <b>New Entity -> Shape Recognition</b> or click on \image html feature_detect.png </li>
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</ol>
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Then you can choose to create either <b>contours</b> or <b>corners</b> from this picture.
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\n
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To create <b>Contours</b> :
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<ol>
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<li> Select in the <b>Picture</b> field a previously imported picture.</li>
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<li> Click on \image html occ_view_camera_dump.png </li>
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<li> Draw a rectangle in the zone whose contour is to be found. The
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zone will be identified by the colors of this <b>Filtering Sample</b>.
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\b Example:
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In the picture shown above, the contours have been drawn basing on
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the sample, containing white and violet color, thus all white and
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violet areas in the picture are included in the outlined zone.
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\image html feature_detection_dlg3.png
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<li> <b> Output type </b>
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<ul>
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<li> \b Spline : The \b result will be a \b Compound of \b Edges. Each contour will be a single \b edge based on a B-Spline curve (it will be smooth).</li>
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<li> \b Polyline : The \b result will be a \b Compound of \b Wires. Each contour will be a wire made of lines (i.e. a \b Polygon)</li>
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</ul>
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In both cases each contour can then be retrieved by an explode operation with the appropriate subshape type.
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</li>
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\note It is better to use the \b Spline output type unless you want to find the frontier of a polygon (rectangle ...)
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</ol>
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\n
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To create <b>Corners</b> :
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<ol>
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<li> In the <b>Picture</b> field select a previously imported picture.</li>
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<li> Apply </li>
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The \b Result will be a \b Compound of \b Vertices
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\image html feature_detection_dlg2.png
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</ol>
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*/
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