Examples with ImageFlow boofcv.struct.flow.ImageFlow used on opensource projects

Example 11 with ImageFlow

use of boofcv.struct.flow.ImageFlow in project BoofCV by lessthanoptimal.

the class ChecksDenseOpticalFlowBlockPyramid method processImageDontBlowUp.

@Test
public void processImageDontBlowUp() {
    DenseOpticalFlowBlockPyramid<T> alg = createAlg(2, 3, 10);
    ImagePyramid<T> pyramid = FactoryPyramid.discreteGaussian(new int[] { 1, 2, 4 }, 0, 2, false, ImageType.single(imageType));
    GImageMiscOps.fillUniform(image, rand, 0, 200);
    pyramid.process(image);
    alg.process(pyramid, pyramid);
    ImageFlow output = alg.getOpticalFlow();
    for (int y = 0; y < output.height; y++) {
        for (int x = 0; x < output.width; x++) {
            assertTrue(output.get(x, y).isValid());
        }
    }
}

Example 12 with ImageFlow

use of boofcv.struct.flow.ImageFlow in project BoofCV by lessthanoptimal.

the class ExampleDenseOpticalFlow method main.

public static void main(String[] args) {
    MediaManager media = DefaultMediaManager.INSTANCE;
    // String fileName0 = UtilIO.pathExample("denseflow/dogdance07.png");
    // String fileName1 = UtilIO.pathExample("denseflow/dogdance08.png");
    String fileName0 = UtilIO.pathExample("denseflow/Urban2_07.png");
    String fileName1 = UtilIO.pathExample("denseflow/Urban2_08.png");
    // String fileName0 = UtilIO.pathExample("denseflow/Grove2_07.png");
    // String fileName1 = UtilIO.pathExample("denseflow/Grove2_09.png");
    DenseOpticalFlow<GrayF32> denseFlow = // FactoryDenseOpticalFlow.hornSchunckPyramid(null,GrayF32.class);
    FactoryDenseOpticalFlow.broxWarping(null, GrayF32.class);
    BufferedImage buff0 = media.openImage(fileName0);
    BufferedImage buff1 = media.openImage(fileName1);
    GrayF32 full = new GrayF32(buff0.getWidth(), buff0.getHeight());
    // Dense optical flow is very computationally expensive.  Just process the image at 1/2 resolution
    GrayF32 previous = new GrayF32(full.width / 2, full.height / 2);
    GrayF32 current = previous.createSameShape();
    ImageFlow flow = new ImageFlow(previous.width, previous.height);
    ConvertBufferedImage.convertFrom(buff0, full);
    new FDistort(full, previous).scaleExt().apply();
    ConvertBufferedImage.convertFrom(buff1, full);
    new FDistort(full, current).scaleExt().apply();
    // compute dense motion
    denseFlow.process(previous, current, flow);
    // Visualize the results
    PanelGridPanel gui = new PanelGridPanel(1, 2);
    BufferedImage converted0 = new BufferedImage(current.width, current.height, BufferedImage.TYPE_INT_RGB);
    BufferedImage converted1 = new BufferedImage(current.width, current.height, BufferedImage.TYPE_INT_RGB);
    BufferedImage visualized = new BufferedImage(current.width, current.height, BufferedImage.TYPE_INT_RGB);
    ConvertBufferedImage.convertTo(previous, converted0, true);
    ConvertBufferedImage.convertTo(current, converted1, true);
    VisualizeOpticalFlow.colorized(flow, 10, visualized);
    AnimatePanel animate = new AnimatePanel(150, converted0, converted1);
    gui.add(animate);
    gui.add(visualized);
    animate.start();
    ShowImages.showWindow(gui, "Dense Optical Flow", true);
}

Example 13 with ImageFlow

use of boofcv.struct.flow.ImageFlow in project BoofCV by lessthanoptimal.

the class VisualizeOpticalFlow method magnitudeAbs.

public static void magnitudeAbs(ImageFlow flowImage, BufferedImage out) {
    GrayF32 magnitude = new GrayF32(flowImage.width, flowImage.height);
    float max = 0;
    for (int y = 0; y < flowImage.height; y++) {
        for (int x = 0; x < flowImage.width; x++) {
            ImageFlow.D f = flowImage.unsafe_get(x, y);
            if (!f.isValid()) {
                out.setRGB(x, y, 0xFF);
            } else {
                float m = Math.max(Math.abs(f.x), Math.abs(f.y));
                if (m > max)
                    max = m;
                magnitude.unsafe_set(x, y, m);
            }
        }
    }
    PixelMath.multiply(magnitude, 255 / max, magnitude);
    ConvertBufferedImage.convertTo(magnitude, out);
}

Example 14 with ImageFlow

use of boofcv.struct.flow.ImageFlow in project BoofCV by lessthanoptimal.

the class VisualizeOpticalFlow method magnitudeAbs.

public static void magnitudeAbs(ImageFlow flowImage, float maxValue, BufferedImage out) {
    GrayF32 magnitude = new GrayF32(flowImage.width, flowImage.height);
    for (int y = 0; y < flowImage.height; y++) {
        for (int x = 0; x < flowImage.width; x++) {
            ImageFlow.D f = flowImage.unsafe_get(x, y);
            if (!f.isValid()) {
                out.setRGB(x, y, 0xFF);
            } else {
                float m = Math.max(Math.abs(f.x), Math.abs(f.y));
                magnitude.unsafe_set(x, y, m);
            }
        }
    }
    PixelMath.multiply(magnitude, 255 / maxValue, magnitude);
    PixelMath.boundImage(magnitude, 0, 255);
    ConvertBufferedImage.convertTo(magnitude, out);
}