Digital Signal Processing Reference
In-Depth Information
D.2.8 File
ContourOverlay.java
D.2
Kombinierte
Regionenmarkierung-
Konturverfolgung
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import ij.ImagePlus;
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import ij.gui.ImageCanvas;
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import java.awt.BasicStroke;
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import java.awt.Color;
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import java.awt.Graphics;
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import java.awt.Graphics2D;
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import java.awt.Polygon;
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import java.awt.RenderingHints;
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import java.awt.Shape;
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import java.awt.Stroke;
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class ContourOverlay extends ImageCanvas {
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private static final long serialVersionUID = 1L;
static float strokeWidth = 0.5f;
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static int capsstyle = BasicStroke.CAP_ROUND;
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static int joinstyle = BasicStroke.JOIN_ROUND;
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static Color outerColor = Color.black;
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static Color innerColor = Color.white;
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static float[] outerDashing = {strokeWidth * 2.0f,
strokeWidth * 2.5f};
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static float[] innerDashing = {strokeWidth * 0.5f,
strokeWidth * 2.5f};
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static boolean DRAW_CONTOURS = true;
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Shape[] outerContourShapes;
Shape[] innerContourShapes;
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ContourOverlay(ImagePlus imp, ContourSet contours) {
super(imp);
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outerContourShapes = contours.getOuterPolygons();
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innerContourShapes = contours.getInnerPolygons();
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}
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public void paint(Graphics g) {
super.paint(g);
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drawContours(g);
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}
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private void drawContours(Graphics g) {
Graphics2D g2d = (Graphics2D) g;
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g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
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// scale and move overlay to the pixel centers
g2d.scale(this.getMagnification(), this.getMagnification())
;
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g2d.translate(0.5-this.srcRect.x, 0.5-this.srcRect.y);
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if (DRAW_CONTOURS) {
