Examples with Edge boofcv.alg.segmentation.fh04.SegmentFelzenszwalbHuttenlocher04.Edge used on opensource projects

Example 6 with Edge

use of boofcv.alg.segmentation.fh04.SegmentFelzenszwalbHuttenlocher04.Edge in project BoofCV by lessthanoptimal.

the class FhEdgeWeights8_F32 method check.

private void check(int x, int y, float color0, int indexA, GrayF32 input, FastQueue<Edge> edges) {
    if (!input.isInBounds(x, y))
        return;
    int indexSrc = input.startIndex + y * input.stride + x;
    int indexB = +y * input.width + x;
    float colorN = input.data[indexSrc];
    Edge e1 = edges.grow();
    e1.sortValue = (float) Math.abs(color0 - colorN);
    e1.indexA = indexA;
    e1.indexB = indexB;
}

Example 7 with Edge

use of boofcv.alg.segmentation.fh04.SegmentFelzenszwalbHuttenlocher04.Edge in project BoofCV by lessthanoptimal.

the class GenericFhEdgeWeightsChecks method basicTest.

@Test
public void basicTest() {
    T input = imageType.createImage(10, 12);
    GImageMiscOps.fillUniform(input, rand, 0, 200);
    FhEdgeWeights<T> alg = createAlg();
    FastQueue<Edge> edges = new FastQueue<>(Edge.class, true);
    alg.process(input, edges);
    int[] hist = new int[input.width * input.height];
    // see if the edges computed the expected weight
    for (int i = 0; i < edges.size(); i++) {
        Edge e = edges.get(i);
        int indexA = e.indexA;
        int indexB = e.indexB;
        hist[indexA]++;
        hist[indexB]++;
        float expected = weight(input, indexA, indexB);
        assertEquals(expected, e.weight(), 1e-4f);
    }
    // make sure each pixel was inspected
    if (rule == ConnectRule.FOUR) {
        for (int y = 0; y < input.height; y++) {
            for (int x = 0; x < input.width; x++) {
                if (x >= 1 && x < input.width - 1 && y >= 1 && y < input.height - 1)
                    assertEquals(hist[input.getIndex(x, y)], 4);
                else if (x == 0 && y == 0)
                    assertEquals(hist[input.getIndex(x, y)], 2);
                else if (x == input.width - 1 && y == 0)
                    assertEquals(hist[input.getIndex(x, y)], 2);
                else if (x == input.width - 1 && y == input.height - 1)
                    assertEquals(hist[input.getIndex(x, y)], 2);
                else if (x == 0 && y == input.height - 1)
                    assertEquals(hist[input.getIndex(x, y)], 2);
                else {
                    assertEquals(hist[input.getIndex(x, y)], 3);
                }
            }
        }
    } else if (rule == ConnectRule.EIGHT) {
        for (int y = 0; y < input.height; y++) {
            for (int x = 0; x < input.width; x++) {
                if (x >= 1 && x < input.width - 1 && y >= 1 && y < input.height - 1)
                    assertEquals(hist[input.getIndex(x, y)], 8);
                else if (x == 0 && y == 0)
                    assertEquals(hist[input.getIndex(x, y)], 3);
                else if (x == input.width - 1 && y == 0)
                    assertEquals(hist[input.getIndex(x, y)], 3);
                else if (x == input.width - 1 && y == input.height - 1)
                    assertEquals(hist[input.getIndex(x, y)], 3);
                else if (x == 0 && y == input.height - 1)
                    assertEquals(hist[input.getIndex(x, y)], 3);
                else {
                    assertEquals(hist[input.getIndex(x, y)], 5);
                }
            }
        }
    } else {
        throw new RuntimeException("Unknown rule");
    }
}

Example 8 with Edge

use of boofcv.alg.segmentation.fh04.SegmentFelzenszwalbHuttenlocher04.Edge in project BoofCV by lessthanoptimal.

the class GenericFhEdgeWeightsChecks method subimage.

@Test
public void subimage() {
    T input = imageType.createImage(10, 12);
    GImageMiscOps.fillUniform(input, rand, 0, 200);
    T inputSub = BoofTesting.createSubImageOf(input);
    FhEdgeWeights<T> alg = createAlg();
    FastQueue<Edge> edges0 = new FastQueue<>(Edge.class, true);
    FastQueue<Edge> edges1 = new FastQueue<>(Edge.class, true);
    alg.process(input, edges0);
    alg.process(inputSub, edges1);
    // both should be identical
    assertEquals(edges0.size, edges1.size);
    for (int i = 0; i < edges0.size; i++) {
        Edge e0 = edges0.get(i);
        Edge e1 = edges1.get(i);
        assertEquals("i = " + i, e0.indexA, e1.indexA);
        assertEquals("i = " + i, e0.indexB, e1.indexB);
        assertEquals("i = " + i, e0.sortValue, e1.sortValue, 1e-4f);
    }
}

Example 9 with Edge

use of boofcv.alg.segmentation.fh04.SegmentFelzenszwalbHuttenlocher04.Edge in project BoofCV by lessthanoptimal.

the class FhEdgeWeights4_F32 method check.

private void check(int x, int y, float color0, int indexA, GrayF32 input, FastQueue<Edge> edges) {
    if (!input.isInBounds(x, y))
        return;
    int indexSrc = input.startIndex + y * input.stride + x;
    int indexB = +y * input.width + x;
    float colorN = input.data[indexSrc];
    Edge e1 = edges.grow();
    e1.sortValue = (float) Math.abs(color0 - colorN);
    e1.indexA = indexA;
    e1.indexB = indexB;
}

Example 10 with Edge

use of boofcv.alg.segmentation.fh04.SegmentFelzenszwalbHuttenlocher04.Edge in project BoofCV by lessthanoptimal.

the class FhEdgeWeights4_PLF32 method check.

private void check(int x, int y, float[] color0, int indexA, Planar<GrayF32> input, FastQueue<Edge> edges) {
    if (!input.isInBounds(x, y))
        return;
    int indexSrc = input.startIndex + y * input.stride + x;
    int indexB = +y * input.width + x;
    float weight = 0;
    for (int i = 0; i < numBands; i++) {
        GrayF32 band = input.getBand(i);
        float color = band.data[indexSrc];
        float diff = color0[i] - color;
        weight += diff * diff;
    }
    Edge e1 = edges.grow();
    e1.sortValue = (float) Math.sqrt(weight);
    e1.indexA = indexA;
    e1.indexB = indexB;
}