select_shape_xldselect_shape_xldSelectShapeXldSelectShapeXldselect_shape_xld (Operator)

Name

select_shape_xldselect_shape_xldSelectShapeXldSelectShapeXldselect_shape_xld — Select contours or polygons using shape features.

Signature

Description

The operator select_shape_xldselect_shape_xldSelectShapeXldSelectShapeXldselect_shape_xld selects contours or polygons according to their shape. For each input contour or polygon in XLDXLDXLDXLDxld the indicated features (FeaturesFeaturesFeaturesfeaturesfeatures) are calculated. If each (OperationOperationOperationoperationoperation = 'and'"and""and""and""and") or at least one (OperationOperationOperationoperationoperation = 'or'"or""or""or""or") of the calculated features is within the limits (MinMinMinminmin,MaxMaxMaxmaxmax) the contour respectively polygon is copied into the output. The parameters MinMinMinminmin and MaxMaxMaxmaxmax can be set to 'min'"min""min""min""min" or 'max'"max""max""max""max" in order to leave bottom and top limits, respectively, open.

Condition:

Possible values for FeaturesFeaturesFeaturesfeaturesfeatures:

(all features can be used with polygons as well)

'area':

Area of the contour (see area_center_xldarea_center_xldAreaCenterXldAreaCenterXldarea_center_xld)

'area_points':

Area of the contour points (see area_center_points_xldarea_center_points_xldAreaCenterPointsXldAreaCenterPointsXldarea_center_points_xld)

'row':

Row index of the center of gravity (see area_center_xldarea_center_xldAreaCenterXldAreaCenterXldarea_center_xld)

'column':

Column index of the center of gravity (see area_center_xldarea_center_xldAreaCenterXldAreaCenterXldarea_center_xld)

'row_points':

Row index of the center of gravity of the contour points (see area_center_points_xldarea_center_points_xldAreaCenterPointsXldAreaCenterPointsXldarea_center_points_xld)

'column_points':

Column index of the center of gravity of the contour points (see area_center_points_xldarea_center_points_xldAreaCenterPointsXldAreaCenterPointsXldarea_center_points_xld)

'width':

Width of the contour (see height_width_ratio_xldheight_width_ratio_xldHeightWidthRatioXldHeightWidthRatioXldheight_width_ratio_xld)

'height':

Height of the contour (see height_width_ratio_xldheight_width_ratio_xldHeightWidthRatioXldHeightWidthRatioXldheight_width_ratio_xld)

'ratio':

Ratio of the height and the width of the contour (see height_width_ratio_xldheight_width_ratio_xldHeightWidthRatioXldHeightWidthRatioXldheight_width_ratio_xld)

'row1':

Row coordinate of upper left corner (see smallest_rectangle1_xldsmallest_rectangle1_xldSmallestRectangle1XldSmallestRectangle1Xldsmallest_rectangle1_xld)

'column1':

Column coordinate of upper left corner (see smallest_rectangle1_xldsmallest_rectangle1_xldSmallestRectangle1XldSmallestRectangle1Xldsmallest_rectangle1_xld)

'row2':

Row coordinate of lower right corner (see smallest_rectangle1_xldsmallest_rectangle1_xldSmallestRectangle1XldSmallestRectangle1Xldsmallest_rectangle1_xld)

'column2':

Column coordinate of lower right corner (see smallest_rectangle1_xldsmallest_rectangle1_xldSmallestRectangle1XldSmallestRectangle1Xldsmallest_rectangle1_xld)

'circularity':

Circularity (see circularity_xldcircularity_xldCircularityXldCircularityXldcircularity_xld)

'compactness':

Compactness (see compactness_xldcompactness_xldCompactnessXldCompactnessXldcompactness_xld)

'rectangularity':

Rectangularity (see rectangularity_xldrectangularity_xldRectangularityXldRectangularityXldrectangularity_xld)

'contlength':

Total length of contour (see length_xldlength_xldLengthXldLengthXldlength_xld)

'convexity':

Convexity (see convexity_xldconvexity_xldConvexityXldConvexityXldconvexity_xld)

'ra':

Major radius of the equivalent ellipse (see elliptic_axis_xldelliptic_axis_xldEllipticAxisXldEllipticAxisXldelliptic_axis_xld)

'rb':

Minor radius of the equivalent ellipse (see elliptic_axis_xldelliptic_axis_xldEllipticAxisXldEllipticAxisXldelliptic_axis_xld)

'phi':

Orientation of the equivalent ellipse (see elliptic_axis_xldelliptic_axis_xldEllipticAxisXldEllipticAxisXldelliptic_axis_xld)

'ra_points':

Major radius of the equivalent ellipse of the contour points (see elliptic_axis_points_xldelliptic_axis_points_xldEllipticAxisPointsXldEllipticAxisPointsXldelliptic_axis_points_xld)

'rb_points':

Minor radius of the equivalent ellipse of the contour points (see elliptic_axis_points_xldelliptic_axis_points_xldEllipticAxisPointsXldEllipticAxisPointsXldelliptic_axis_points_xld)

'phi_points':

Orientation of the equivalent ellipse of the contour points (see elliptic_axis_points_xldelliptic_axis_points_xldEllipticAxisPointsXldEllipticAxisPointsXldelliptic_axis_points_xld)

'anisometry:'

Anisometry (see eccentricity_xldeccentricity_xldEccentricityXldEccentricityXldeccentricity_xld)

'anisometry_points:'

Anisometry of the contour points (see eccentricity_points_xldeccentricity_points_xldEccentricityPointsXldEccentricityPointsXldeccentricity_points_xld)

'bulkiness:'

Bulkiness (see eccentricity_xldeccentricity_xldEccentricityXldEccentricityXldeccentricity_xld)

'struct_factor:'

Structure factor (see eccentricity_xldeccentricity_xldEccentricityXldEccentricityXldeccentricity_xld)

'outer_radius':

Radius of smallest enclosing circle (see smallest_circle_xldsmallest_circle_xldSmallestCircleXldSmallestCircleXldsmallest_circle_xld)

'max_diameter':

Maximum diameter of the contour (see diameter_xlddiameter_xldDiameterXldDiameterXlddiameter_xld)

'orientation':

Orientation of the contour (see orientation_xldorientation_xldOrientationXldOrientationXldorientation_xld)

'orientation_points':

Orientation of the contour points (see orientation_points_xldorientation_points_xldOrientationPointsXldOrientationPointsXldorientation_points_xld)

'rect2_phi':

Orientation of the smallest surrounding rectangle (see smallest_rectangle2_xldsmallest_rectangle2_xldSmallestRectangle2XldSmallestRectangle2Xldsmallest_rectangle2_xld)

'rect2_len1':

Half the length of the smallest surrounding rectangle (see smallest_rectangle2_xldsmallest_rectangle2_xldSmallestRectangle2XldSmallestRectangle2Xldsmallest_rectangle2_xld)

'rect2_len2':

Half the width of the smallest surrounding rectangle (see smallest_rectangle2_xldsmallest_rectangle2_xldSmallestRectangle2XldSmallestRectangle2Xldsmallest_rectangle2_xld)

'moments_m11', 'moments_m20', 'moments_m02':

Geometric moments of the contour (see moments_region_2ndmoments_region_2ndMomentsRegion2ndMomentsRegion2ndmoments_region_2nd)

'moments_m11_points', 'moments_m20_points', 'moments_m02_points':

Geometric moments of the contour points (see moments_points_xldmoments_points_xldMomentsPointsXldMomentsPointsXldmoments_points_xld)

If only one feature (FeaturesFeaturesFeaturesfeaturesfeatures) is used the value of OperationOperationOperationoperationoperation is meaningless. Several features are processed in the sequence in which they are entered.The use of some features requires that the input contour respectively polygon must not intersect itself, otherwise the results are not meaningful (Whether the input contour or polygon intersects itself or not can be determined with test_self_intersection_xldtest_self_intersection_xldTestSelfIntersectionXldTestSelfIntersectionXldtest_self_intersection_xld).

Execution Information

• Multithreading type: reentrant (runs in parallel with non-exclusive operators).
• Multithreading scope: global (may be called from any thread).
• Processed without parallelization.

Parameters

Result

The operator select_shape_xldselect_shape_xldSelectShapeXldSelectShapeXldselect_shape_xld returns the value 2 ( H_MSG_TRUE) if the input is not empty. The behavior in case of empty input (no input objects available) is set via the operator set_system('no_object_result',<Result>). If necessary an exception is raised.

Possible Predecessors

gen_contours_skeleton_xldgen_contours_skeleton_xldGenContoursSkeletonXldGenContoursSkeletonXldgen_contours_skeleton_xld, edges_sub_pixedges_sub_pixEdgesSubPixEdgesSubPixedges_sub_pix, threshold_sub_pixthreshold_sub_pixThresholdSubPixThresholdSubPixthreshold_sub_pix, gen_contour_polygon_xldgen_contour_polygon_xldGenContourPolygonXldGenContourPolygonXldgen_contour_polygon_xld, test_self_intersection_xldtest_self_intersection_xldTestSelfIntersectionXldTestSelfIntersectionXldtest_self_intersection_xld

Possible Successors

shape_trans_xldshape_trans_xldShapeTransXldShapeTransXldshape_trans_xld, count_objcount_objCountObjCountObjcount_obj

See also

area_center_xldarea_center_xldAreaCenterXldAreaCenterXldarea_center_xld, area_center_points_xldarea_center_points_xldAreaCenterPointsXldAreaCenterPointsXldarea_center_points_xld, circularity_xldcircularity_xldCircularityXldCircularityXldcircularity_xld, compactness_xldcompactness_xldCompactnessXldCompactnessXldcompactness_xld, convexity_xldconvexity_xldConvexityXldConvexityXldconvexity_xld, elliptic_axis_xldelliptic_axis_xldEllipticAxisXldEllipticAxisXldelliptic_axis_xld, elliptic_axis_points_xldelliptic_axis_points_xldEllipticAxisPointsXldEllipticAxisPointsXldelliptic_axis_points_xld, eccentricity_xldeccentricity_xldEccentricityXldEccentricityXldeccentricity_xld, eccentricity_points_xldeccentricity_points_xldEccentricityPointsXldEccentricityPointsXldeccentricity_points_xld, rectangularity_xldrectangularity_xldRectangularityXldRectangularityXldrectangularity_xld, smallest_circle_xldsmallest_circle_xldSmallestCircleXldSmallestCircleXldsmallest_circle_xld, smallest_rectangle1_xldsmallest_rectangle1_xldSmallestRectangle1XldSmallestRectangle1Xldsmallest_rectangle1_xld, smallest_rectangle2_xldsmallest_rectangle2_xldSmallestRectangle2XldSmallestRectangle2Xldsmallest_rectangle2_xld, diameter_xlddiameter_xldDiameterXldDiameterXlddiameter_xld, orientation_xldorientation_xldOrientationXldOrientationXldorientation_xld, orientation_points_xldorientation_points_xldOrientationPointsXldOrientationPointsXldorientation_points_xld, moments_xldmoments_xldMomentsXldMomentsXldmoments_xld, moments_points_xldmoments_points_xldMomentsPointsXldMomentsPointsXldmoments_points_xld, select_objselect_objSelectObjSelectObjselect_obj

Module

Foundation