Examples with PntInt imagingbook.pub.geometry.basic.Pnt2d.PntInt used on opensource projects

Example 1 with PntInt

use of imagingbook.pub.geometry.basic.Pnt2d.PntInt in project imagingbook-common by imagingbook.

the class SegmentationRegionContour method findNextContourPoint.

// --------------------------------------------------------------------
// Starts at point X0 in direction d0, returns a tuple holding
// the next point and the direction in which it was found if successful.
// Returns null if no successor point is found.
private Tuple2<PntInt, Integer> findNextContourPoint(final PntInt x0, final int d0) {
    final int step = (NT == N4) ? 2 : 1;
    PntInt x = null;
    int d = d0;
    int i = 0;
    boolean done = false;
    while (i < 7 && !done) {
        // N4: i = 0,2,4,6  N8: i = 0,1,2,3,4,5,6
        x = x0.plus(delta[d][0], delta[d][1]);
        if (ip.getPixel(x.x, x.y) == BACKGROUND) {
            // mark this background pixel not to be visited again
            setLabel(x, VISITED);
            d = (d + step) % 8;
        } else {
            // found a non-background pixel (next pixel to follow)
            done = true;
        }
        i = i + step;
    }
    return (done) ? Tuple2.from(x, d) : // no successor found
    Tuple2.from(x0, d0);
}

Example 2 with PntInt

use of imagingbook.pub.geometry.basic.Pnt2d.PntInt in project imagingbook-common by imagingbook.

the class SegmentationBreadthFirst method floodFill.

private void floodFill(int u, int v, int label) {
    // queue contains pixel coordinates
    Deque<PntInt> Q = new LinkedList<>();
    Q.addLast(PntInt.from(u, v));
    while (!Q.isEmpty()) {
        // get the next point to process
        PntInt p = Q.removeFirst();
        int x = p.x;
        int y = p.y;
        if ((x >= 0) && (x < width) && (y >= 0) && (y < height) && getLabel(x, y) == FOREGROUND) {
            setLabel(x, y, label);
            Q.addLast(PntInt.from(x + 1, y));
            Q.addLast(PntInt.from(x, y + 1));
            Q.addLast(PntInt.from(x, y - 1));
            Q.addLast(PntInt.from(x - 1, y));
            if (NT == NeighborhoodType2D.N8) {
                Q.addLast(PntInt.from(x + 1, y + 1));
                Q.addLast(PntInt.from(x - 1, y + 1));
                Q.addLast(PntInt.from(x + 1, y - 1));
                Q.addLast(PntInt.from(x - 1, y - 1));
            }
        }
    }
}

Example 3 with PntInt

use of imagingbook.pub.geometry.basic.Pnt2d.PntInt in project imagingbook-common by imagingbook.

the class BreadthFirstSegmentation method floodFill.

private void floodFill(int u, int v, int label) {
    // queue contains pixel coordinates
    Deque<PntInt> Q = new LinkedList<>();
    Q.addLast(PntInt.from(u, v));
    while (!Q.isEmpty()) {
        // get the next point to process
        PntInt p = Q.removeFirst();
        int x = p.x;
        int y = p.y;
        if ((x >= 0) && (x < width) && (y >= 0) && (y < height) && getLabel(x, y) == FOREGROUND) {
            setLabel(x, y, label);
            Q.addLast(PntInt.from(x + 1, y));
            Q.addLast(PntInt.from(x, y + 1));
            Q.addLast(PntInt.from(x, y - 1));
            Q.addLast(PntInt.from(x - 1, y));
            if (NT == NeighborhoodType2D.N8) {
                Q.addLast(PntInt.from(x + 1, y + 1));
                Q.addLast(PntInt.from(x - 1, y + 1));
                Q.addLast(PntInt.from(x + 1, y - 1));
                Q.addLast(PntInt.from(x - 1, y - 1));
            }
        }
    }
}

Example 4 with PntInt

use of imagingbook.pub.geometry.basic.Pnt2d.PntInt in project imagingbook-common by imagingbook.

the class DepthFirstSegmentation method floodFill.

private void floodFill(int u, int v, int label) {
    // stack contains pixel coordinates
    Deque<PntInt> S = new LinkedList<>();
    S.push(PntInt.from(u, v));
    while (!S.isEmpty()) {
        PntInt p = S.pop();
        int x = p.x;
        int y = p.y;
        if ((x >= 0) && (x < width) && (y >= 0) && (y < height) && getLabel(x, y) == FOREGROUND) {
            setLabel(x, y, label);
            S.push(PntInt.from(x + 1, y));
            S.push(PntInt.from(x, y + 1));
            S.push(PntInt.from(x, y - 1));
            S.push(PntInt.from(x - 1, y));
            if (NT == NeighborhoodType2D.N8) {
                S.push(PntInt.from(x + 1, y + 1));
                S.push(PntInt.from(x - 1, y + 1));
                S.push(PntInt.from(x + 1, y - 1));
                S.push(PntInt.from(x - 1, y - 1));
            }
        }
    }
}

Example 5 with PntInt

use of imagingbook.pub.geometry.basic.Pnt2d.PntInt in project imagingbook-common by imagingbook.

the class ChamferMatcher method getMatchValue.

private float getMatchValue(PntInt[] points, int r, int s) {
    float q = 0.0f;
    for (PntInt p : points) {
        final int u = r + p.x;
        final int v = s + p.y;
        if (0 <= u && u < MI && 0 <= v && v < NI) {
            q = q + D[u][v];
        }
    }
    return q;
}