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

Example 31 with ImageGray

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

the class TestPixelMath method testSubtract.

private void testSubtract(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, 40);
        GImageMiscOps.fillUniform(inputB, rand, 0, 40);
    }
    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);
        }
    }
}

Example 32 with ImageGray

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

the class TestPixelMath method TestAverageBand.

private void TestAverageBand(Method m) throws InvocationTargetException, IllegalAccessException {
    Class[] paramTypes = m.getParameterTypes();
    Planar input = new Planar(paramTypes[1], width, height, 3);
    ImageGray output = GeneralizedImageOps.createSingleBand(paramTypes[1], width, height);
    if (output.getDataType().isSigned()) {
        GImageMiscOps.fillUniform(input, rand, -20, 20);
    } else {
        GImageMiscOps.fillUniform(input, rand, 0, 20);
    }
    m.invoke(null, input, output);
    GImageGray a = FactoryGImageGray.wrap(input.getBand(0));
    GImageGray b = FactoryGImageGray.wrap(input.getBand(1));
    GImageGray c = FactoryGImageGray.wrap(input.getBand(2));
    GImageGray d = FactoryGImageGray.wrap(output);
    boolean isInteger = output.getDataType().isInteger();
    for (int i = 0; i < height; i++) {
        for (int j = 0; j < width; j++) {
            double expected = 0;
            expected += a.get(j, i).doubleValue();
            expected += b.get(j, i).doubleValue();
            expected += c.get(j, i).doubleValue();
            expected /= 3;
            double found = d.get(j, i).doubleValue();
            if (isInteger)
                expected = (int) expected;
            assertEquals(expected, found, 1e-4);
        }
    }
}

Example 33 with ImageGray

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

the class PermuteWaveletCompare method runTest.

private void runTest(int widthIn, int heightIn, int widthOut, int heightOut, boolean swapSize) {
    if (swapSize) {
        int t = widthIn;
        widthIn = widthOut;
        widthOut = t;
        t = heightIn;
        heightIn = heightOut;
        heightOut = t;
    }
    ImageGray input = GeneralizedImageOps.createSingleBand(inputType, widthIn, heightIn);
    ImageGray found = GeneralizedImageOps.createSingleBand(outputType, widthOut, heightOut);
    ImageGray expected = GeneralizedImageOps.createSingleBand(outputType, widthOut, heightOut);
    GImageMiscOps.fillUniform(input, rand, 0, 50);
    // test different descriptions lengths and offsets, and borders
    for (BorderType type : BorderType.values()) {
        for (int o = 0; o <= 2; o++) {
            for (int l = 2 + o; l <= 5; l++) {
                // System.out.println("type "+type+" o = "+o+" l = "+l);
                GImageMiscOps.fill(found, 0);
                GImageMiscOps.fill(expected, 0);
                // create a random wavelet.  does not have to be a real once
                // since it just is checking that two functions produce the same output
                WaveletDescription<?> desc = createDesc(-o, l, type);
                applyValidation(desc, input, expected);
                // make sure it works on sub-images
                BoofTesting.checkSubImage(this, "innerTest", false, input, found, expected, desc);
            }
        }
    }
}

Example 34 with ImageGray

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

the class TestImplIntegralImageOps method convolveSparse.

public void convolveSparse(Method m) throws InvocationTargetException, IllegalAccessException {
    Class[] paramType = m.getParameterTypes();
    Class inputType = paramType[0];
    ImageGray integral = GeneralizedImageOps.createSingleBand(inputType, width, height);
    GImageMiscOps.fillUniform(integral, rand, 0, 1000);
    ImageGray expected = GeneralizedImageOps.createSingleBand(inputType, width, height);
    IntegralKernel kernel = new IntegralKernel(2);
    kernel.blocks[0] = new ImageRectangle(-2, -2, 1, 1);
    kernel.blocks[1] = new ImageRectangle(-2, -1, 1, 0);
    kernel.scales = new int[] { 1, 2 };
    GIntegralImageOps.convolve(integral, kernel, expected);
    GImageGray e = FactoryGImageGray.wrap(expected);
    double found0 = ((Number) m.invoke(null, integral, kernel, 0, 0)).doubleValue();
    double found1 = ((Number) m.invoke(null, integral, kernel, 10, 12)).doubleValue();
    double found2 = ((Number) m.invoke(null, integral, kernel, 19, 29)).doubleValue();
    assertEquals(e.get(0, 0).doubleValue(), found0, 1e-4f);
    assertEquals(e.get(10, 12).doubleValue(), found1, 1e-4f);
    assertEquals(e.get(19, 29).doubleValue(), found2, 1e-4f);
}

Example 35 with ImageGray

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

the class TestImplIntegralImageOps method block_zero.

public void block_zero(Method m) throws InvocationTargetException, IllegalAccessException {
    Class[] paramType = m.getParameterTypes();
    Class inputType = paramType[0];
    Class origType = inputType == GrayS32.class ? GrayU8.class : inputType;
    ImageGray input = GeneralizedImageOps.createSingleBand(origType, width, height);
    ImageGray integral = GeneralizedImageOps.createSingleBand(inputType, width, height);
    GImageMiscOps.fill(input, 1);
    GIntegralImageOps.transform(input, integral);
    double found = ((Number) m.invoke(null, integral, 4, 5, 8, 8)).doubleValue();
    assertEquals(12, found, 1e-4f);
    found = ((Number) m.invoke(null, integral, -1, -2, 2, 3)).doubleValue();
    assertEquals(12, found, 1e-4f);
    found = ((Number) m.invoke(null, integral, width - 2, height - 3, width + 1, height + 3)).doubleValue();
    assertEquals(2, found, 1e-4f);
    found = ((Number) m.invoke(null, integral, 3, -4, -1, -1)).doubleValue();
    assertEquals(0, found, 1e-4f);
    found = ((Number) m.invoke(null, integral, width + 1, height + 2, width + 6, height + 8)).doubleValue();
    assertEquals(0, found, 1e-4f);
}