Examples with ImageGray boofcv.struct.image.ImageGray used on opensource projects

Example 71 with ImageGray

use of boofcv.struct.image.ImageGray in project BoofCV by lessthanoptimal.

the class TestImageStatistics method testVariance.

private void testVariance(Method m) throws InvocationTargetException, IllegalAccessException {
    Class[] paramTypes = m.getParameterTypes();
    ImageGray inputA = GeneralizedImageOps.createSingleBand(paramTypes[0], width, height);
    if (inputA.getDataType().isSigned()) {
        GImageMiscOps.fillUniform(inputA, rand, -20, 20);
    } else {
        GImageMiscOps.fillUniform(inputA, rand, 0, 20);
    }
    double mean = 2.5;
    Object result = paramTypes[1] == double.class ? m.invoke(null, inputA, mean) : m.invoke(null, inputA, (float) mean);
    double total = 0;
    for (int i = 0; i < height; i++) {
        for (int j = 0; j < width; j++) {
            double d = GeneralizedImageOps.get(inputA, j, i) - mean;
            total += d * d;
        }
    }
    double var = total / (width * height);
    assertEquals(var, ((Number) result).doubleValue(), 1e-4);
}

Example 72 with ImageGray

use of boofcv.struct.image.ImageGray in project BoofCV by lessthanoptimal.

the class TestPixelMath method testBound.

private void testBound(Method m) throws InvocationTargetException, IllegalAccessException {
    Class[] paramTypes = m.getParameterTypes();
    ImageGray input = GeneralizedImageOps.createSingleBand(paramTypes[0], width, height);
    double max = 100;
    double min = -100;
    GImageMiscOps.fillUniform(input, rand, (int) min, (int) max);
    if (input.getDataType().isInteger()) {
        m.invoke(null, input, 2, 10);
    } else
        m.invoke(null, input, 2.0f, 10.0f);
    GImageGray a = FactoryGImageGray.wrap(input);
    if (input.getDataType().isInteger()) {
        for (int i = 0; i < height; i++) {
            for (int j = 0; j < width; j++) {
                int v = a.get(j, i).intValue();
                assertTrue(v >= 2 && v <= 10);
            }
        }
    } else {
        for (int i = 0; i < height; i++) {
            for (int j = 0; j < width; j++) {
                float v = a.get(j, i).floatValue();
                assertTrue(v >= 2f && v <= 10f);
            }
        }
    }
}

Example 73 with ImageGray

use of boofcv.struct.image.ImageGray in project BoofCV by lessthanoptimal.

the class TestPixelMath method testPow2.

private void testPow2(Method m) throws InvocationTargetException, IllegalAccessException {
    Class[] paramTypes = m.getParameterTypes();
    ImageGray inputA = GeneralizedImageOps.createSingleBand(paramTypes[0], width, height);
    ImageGray inputB = GeneralizedImageOps.createSingleBand(paramTypes[1], width, height);
    GImageMiscOps.fillUniform(inputA, rand, -20, 20);
    GImageMiscOps.fillUniform(inputB, rand, -20, 20);
    m.invoke(null, inputA, inputB);
    for (int i = 0; i < height; i++) {
        for (int j = 0; j < width; j++) {
            double a = GeneralizedImageOps.get(inputA, j, i);
            double b = GeneralizedImageOps.get(inputB, j, i);
            assertEquals(a * a, b, 1e-4);
        }
    }
}

Example 74 with ImageGray

use of boofcv.struct.image.ImageGray in project BoofCV by lessthanoptimal.

the class TestPixelMath method testMultiplyPixel.

private void testMultiplyPixel(Method m) throws InvocationTargetException, IllegalAccessException {
    Class[] paramTypes = m.getParameterTypes();
    ImageGray inputA = GeneralizedImageOps.createSingleBand(paramTypes[0], width, height);
    ImageGray inputB = GeneralizedImageOps.createSingleBand(paramTypes[1], width, height);
    ImageGray output = GeneralizedImageOps.createSingleBand(paramTypes[2], width, height);
    GImageMiscOps.fillUniform(inputA, rand, -20, 20);
    GImageMiscOps.fillUniform(inputB, rand, -20, 20);
    m.invoke(null, inputA, inputB, output);
    GImageGray a = FactoryGImageGray.wrap(inputA);
    GImageGray b = FactoryGImageGray.wrap(inputB);
    GImageGray o = FactoryGImageGray.wrap(output);
    for (int i = 0; i < height; i++) {
        for (int j = 0; j < width; j++) {
            assertEquals(a.get(j, i).doubleValue() * b.get(j, i).doubleValue(), o.get(j, i).doubleValue(), 1e-4);
        }
    }
}

Example 75 with ImageGray

use of boofcv.struct.image.ImageGray in project BoofCV by lessthanoptimal.

the class TestPixelMath method testAdd.

private void testAdd(Method m) throws InvocationTargetException, IllegalAccessException {
    Class[] paramTypes = m.getParameterTypes();
    ImageGray inputA = GeneralizedImageOps.createSingleBand(paramTypes[0], width, height);
    ImageGray inputB = GeneralizedImageOps.createSingleBand(paramTypes[1], width, height);
    ImageGray inputC = GeneralizedImageOps.createSingleBand(paramTypes[2], width, height);
    if (inputA.getDataType().isSigned()) {
        GImageMiscOps.fillUniform(inputA, rand, -20, 20);
        GImageMiscOps.fillUniform(inputB, rand, -20, 20);
    } else {
        GImageMiscOps.fillUniform(inputA, rand, 0, 20);
        GImageMiscOps.fillUniform(inputB, rand, -20, 20);
    }
    m.invoke(null, inputA, inputB, inputC);
    for (int i = 0; i < height; i++) {
        for (int j = 0; j < width; j++) {
            double a = GeneralizedImageOps.get(inputA, j, i);
            double b = GeneralizedImageOps.get(inputB, j, i);
            double c = GeneralizedImageOps.get(inputC, j, i);
            assertEquals(a + b, c, 1e-4);
        }
    }
}