Examples with GImageGray boofcv.core.image.GImageGray used on opensource projects

Example 31 with GImageGray

use of boofcv.core.image.GImageGray in project BoofCV by lessthanoptimal.

the class TestGradientToEdgeFeatures method direction.

public void direction(Method m, ImageGray derivX, ImageGray derivY, GrayF32 direction) throws InvocationTargetException, IllegalAccessException {
    m.invoke(null, derivX, derivY, direction);
    GImageGray a = FactoryGImageGray.wrap(derivX);
    GImageGray b = FactoryGImageGray.wrap(derivY);
    float expected = (float) Math.atan(b.get(1, 2).floatValue() / a.get(1, 2).floatValue());
    assertEquals(expected, direction.get(1, 2), 1e-4);
}

Example 32 with GImageGray

use of boofcv.core.image.GImageGray in project BoofCV by lessthanoptimal.

the class TestImplHessianBlobIntensity method performDeterminant.

public void performDeterminant(Method m, GrayF32 intensity, ImageGray derivXX, ImageGray derivYY, ImageGray derivXY) throws InvocationTargetException, IllegalAccessException {
    m.invoke(null, intensity, derivXX, derivYY, derivXY);
    GImageGray xx = FactoryGImageGray.wrap(derivXX);
    GImageGray yy = FactoryGImageGray.wrap(derivYY);
    GImageGray xy = FactoryGImageGray.wrap(derivXY);
    float expected = xx.get(5, 6).floatValue() * yy.get(5, 6).floatValue() - xy.get(5, 6).floatValue() * xy.get(5, 6).floatValue();
    assertEquals(expected, intensity.get(5, 6), 1e-4);
}

Example 33 with GImageGray

use of boofcv.core.image.GImageGray in project BoofCV by lessthanoptimal.

the class TestImplHessianBlobIntensity method performTrace.

public void performTrace(Method m, GrayF32 intensity, ImageGray derivXX, ImageGray derivYY) throws InvocationTargetException, IllegalAccessException {
    m.invoke(null, intensity, derivXX, derivYY);
    GImageGray xx = FactoryGImageGray.wrap(derivXX);
    GImageGray yy = FactoryGImageGray.wrap(derivYY);
    float expected = xx.get(5, 6).floatValue() + yy.get(5, 6).floatValue();
    assertEquals(expected, intensity.get(5, 6), 1e-4);
}

Example 34 with GImageGray

use of boofcv.core.image.GImageGray in project BoofCV by lessthanoptimal.

the class TestImplMedianSortNaive method trivialTest.

public void trivialTest(Method m, ImageGray _image, ImageGray _found) {
    try {
        m.invoke(null, _image, _found, 1, null);
    } catch (IllegalAccessException | InvocationTargetException e) {
        throw new RuntimeException(e);
    }
    GImageGray found = FactoryGImageGray.wrap(_found);
    assertEquals(5, found.get(1, 1).intValue());
    assertEquals(6, found.get(2, 1).intValue());
    assertEquals(9, found.get(1, 2).intValue());
    assertEquals(10, found.get(2, 2).intValue());
    // check the edges
    assertEquals(4, found.get(0, 0).intValue());
    assertEquals(5, found.get(2, 0).intValue());
    assertEquals(13, found.get(2, 3).intValue());
}

Example 35 with GImageGray

use of boofcv.core.image.GImageGray in project BoofCV by lessthanoptimal.

the class TestImplGrayImageOps method brighten.

public void brighten(Method m) throws InvocationTargetException, IllegalAccessException {
    Class[] param = m.getParameterTypes();
    ImageGray input = GeneralizedImageOps.createSingleBand(param[0], width, height);
    ImageGray output = GeneralizedImageOps.createSingleBand(param[0], width, height);
    GImageMiscOps.fill(input, 23);
    m.invoke(null, input, 10, 255, output);
    GImageGray b = FactoryGImageGray.wrap(output);
    for (int y = 0; y < height; y++) {
        for (int x = 0; x < width; x++) {
            assertEquals(33, b.get(x, y).doubleValue(), 1e-4);
        }
    }
    // check to see how well it sets the ceiling
    m.invoke(null, input, 240, 255, output);
    assertEquals(255, b.get(5, 6).doubleValue(), 1e-4);
    // check it flooring to zero
    m.invoke(null, input, -50, 255, output);
    assertEquals(0, b.get(5, 6).doubleValue(), 1e-4);
}