@Override
public List<Frame> execute(CVParticle particle) throws Exception {
List<Frame> result = new ArrayList<Frame>();
if (!(particle instanceof Frame)) return result;
Frame frame = (Frame) particle;
BufferedImage image = frame.getImage();
if (image == null) return result;
if (image.getWidth() < 2 * cols || image.getHeight() < 2 * rows) return result;
int width = image.getWidth() / cols;
int height = image.getHeight() / rows;
int tileIndex = 0;
for (int r = 0; r < rows; r++) {
for (int c = 0; c < cols; c++) {
Rectangle box =
new Rectangle(c * width, r * height, width + pixelOverlap, height + pixelOverlap);
box = box.intersection(frame.getBoundingBox());
BufferedImage tile = image.getSubimage(box.x, box.y, box.width, box.height);
byte[] buffer = ImageUtils.imageToBytes(tile, imageType);
result.add(
new Frame(
frame.getStreamId() + "_" + tileIndex,
frame.getSequenceNr(),
imageType,
buffer,
frame.getTimestamp(),
box));
tileIndex++;
}
}
return result;
}
@Override
public List<Frame> execute(List<CVParticle> input) throws Exception {
Frame frame = null;
List<Feature> features = new ArrayList<Feature>();
for (CVParticle particle : input) {
if (particle instanceof Feature) {
features.add((Feature) particle);
} else if (particle instanceof Frame && frame == null) {
frame = (Frame) particle;
}
}
if (frame == null)
frame =
new Frame(
input.get(0).getStreamId(),
input.get(0).getSequenceNr(),
Frame.NO_IMAGE,
(byte[]) null,
0L,
new Rectangle());
// merge new features with already existing features in the Frame
f1:
for (Feature newF : features) {
for (Feature oldF : frame.getFeatures()) {
if (newF.getName().equals(oldF.getName())) {
oldF.getSparseDescriptors().addAll(newF.getSparseDescriptors());
continue f1;
}
}
frame.getFeatures().add(newF);
}
List<Frame> result = new ArrayList<Frame>();
result.add(frame);
return result;
}