Display OpenCV Mat with JavaFX

Question

I would like to display Mat objects from OpenCV directly with JavaFX. I have seen that it is possible to convert a Mat object into a BufferedImage. But as far as I know you can't display a BufferedImage with JavaFX, so another conversion would have to take place.

Is there a way to directly convert it into a data structure that is displayable by JavaFX?

Answer 1

I have found a direct way to convert a Mat object to a JavaFX Image object.

MatOfByte byteMat = new MatOfByte();
Highgui.imencode(".bmp", mat, byteMat);
return new Image(new ByteArrayInputStream(byteMat.toArray()));

You can also encode it to .jpg but .bmp is faster.

Answer 2

TomTom's answer was very helpful and solved the problem, but Highgui does no longer have any bindings in java.

As of OpenCV 3.0.0, the up-to-date code is more like:

MatOfByte byteMat = new MatOfByte();
Imgcodecs.imencode(".bmp", mat, byteMat);
return new Image(new ByteArrayInputStream(byteMat.toArray()));