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adding markers to OpenCV

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This commit is contained in:
StevenPuttemans
2015-09-23 10:02:59 +02:00
parent d945aff132
commit 587dca9b1c
2 changed files with 102 additions and 0 deletions
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modules/imgproc/src/drawing.cpp
+65
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@@ -1654,6 +1654,71 @@ PolyLine( Mat& img, const Point* v, int count, bool is_closed,
}
}
/* ----------------------------------------------------------------------------------------- */
/* ADDING A SET OF PREDEFINED MARKERS WHICH COULD BE USED TO HIGHLIGHT POSITIONS IN AN IMAGE */
/* ----------------------------------------------------------------------------------------- */
void drawMarker(Mat& img, Point position, const Scalar& color, int markerType, int markerSize, int thickness, int line_type)
{
switch(markerType)
{
// The cross marker case
case MARKER_CROSS:
line(img, Point(position.x-(markerSize/2), position.y), Point(position.x+(markerSize/2), position.y), color, thickness, line_type);
line(img, Point(position.x, position.y-(markerSize/2)), Point(position.x, position.y+(markerSize/2)), color, thickness, line_type);
break;
// The tilted cross marker case
case MARKER_TILTED_CROSS:
line(img, Point(position.x-(markerSize/2), position.y-(markerSize/2)), Point(position.x+(markerSize/2), position.y+(markerSize/2)), color, thickness, line_type);
line(img, Point(position.x+(markerSize/2), position.y-(markerSize/2)), Point(position.x-(markerSize/2), position.y+(markerSize/2)), color, thickness, line_type);
break;
// The star marker case
case MARKER_STAR:
line(img, Point(position.x-(markerSize/2), position.y), Point(position.x+(markerSize/2), position.y), color, thickness, line_type);
line(img, Point(position.x, position.y-(markerSize/2)), Point(position.x, position.y+(markerSize/2)), color, thickness, line_type);
line(img, Point(position.x-(markerSize/2), position.y-(markerSize/2)), Point(position.x+(markerSize/2), position.y+(markerSize/2)), color, thickness, line_type);
line(img, Point(position.x+(markerSize/2), position.y-(markerSize/2)), Point(position.x-(markerSize/2), position.y+(markerSize/2)), color, thickness, line_type);
break;
// The diamond marker case
case MARKER_DIAMOND:
line(img, Point(position.x, position.y-(markerSize/2)), Point(position.x+(markerSize/2), position.y), color, thickness, line_type);
line(img, Point(position.x+(markerSize/2), position.y), Point(position.x, position.y+(markerSize/2)), color, thickness, line_type);
line(img, Point(position.x, position.y+(markerSize/2)), Point(position.x-(markerSize/2), position.y), color, thickness, line_type);
line(img, Point(position.x-(markerSize/2), position.y), Point(position.x, position.y-(markerSize/2)), color, thickness, line_type);
break;
// The square marker case
case MARKER_SQUARE:
line(img, Point(position.x-(markerSize/2), position.y-(markerSize/2)), Point(position.x+(markerSize/2), position.y-(markerSize/2)), color, thickness, line_type);
line(img, Point(position.x+(markerSize/2), position.y-(markerSize/2)), Point(position.x+(markerSize/2), position.y+(markerSize/2)), color, thickness, line_type);
line(img, Point(position.x+(markerSize/2), position.y+(markerSize/2)), Point(position.x-(markerSize/2), position.y+(markerSize/2)), color, thickness, line_type);
line(img, Point(position.x-(markerSize/2), position.y+(markerSize/2)), Point(position.x-(markerSize/2), position.y-(markerSize/2)), color, thickness, line_type);
break;
// The triangle up marker case
case MARKER_TRIANGLE_UP:
line(img, Point(position.x-(markerSize/2), position.y+(markerSize/2)), Point(position.x+(markerSize/2), position.y+(markerSize/2)), color, thickness, line_type);
line(img, Point(position.x+(markerSize/2), position.y+(markerSize/2)), Point(position.x, position.y-(markerSize/2)), color, thickness, line_type);
line(img, Point(position.x, position.y-(markerSize/2)), Point(position.x-(markerSize/2), position.y-(markerSize/2)), color, thickness, line_type);
break;
// The triangle down marker case
case MARKER_TRIANGLE_DOWN:
line(img, Point(position.x-(markerSize/2), position.y-(markerSize/2)), Point(position.x+(markerSize/2), position.y-(markerSize/2)), color, thickness, line_type);
line(img, Point(position.x+(markerSize/2), position.y-(markerSize/2)), Point(position.x, position.y+(markerSize/2)), color, thickness, line_type);
line(img, Point(position.x, position.y+(markerSize/2)), Point(position.x-(markerSize/2), position.y-(markerSize/2)), color, thickness, line_type);
break;
// If any number that doesn't exist is entered as marker type, draw a cross marker, to avoid crashes
default:
drawMarker(img, position, color, MARKER_CROSS, markerSize, thickness, line_type);
break;
}
}
/****************************************************************************************\
* External functions *
\****************************************************************************************/