How to convert mat(OpenCV) to image(JavaFX)? I think this isn't not best method:
MatOfByte byteMat = new MatOfByte();
Highgui.imencode(".bmp", mat, byteMat);
return new Image(new ByteArrayInputStream(byteMat.toArray()));
P.S.
Image - import javafx.scene.image.Image;
One way to do it would be this.I do not remember the source from where I got this:-
private Image mat2Image(Mat frame)
{
int type = BufferedImage.TYPE_BYTE_GRAY;
if ( frame.channels() > 1 ) {
type = BufferedImage.TYPE_3BYTE_BGR;
}
int bufferSize = frame.channels()*frame.cols()*frame.rows();
byte [] b = new byte[bufferSize];
frame.get(0,0,b); // get all the pixels
BufferedImage image = new BufferedImage(frame.cols(),frame.rows(), type);
final byte[] targetPixels = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
System.arraycopy(b, 0, targetPixels, 0, b.length);
return SwingFXUtils.toFXImage(image,null);
}
There may be a way to make it neater using the Converters class from Opencv along with JDK8. I will update this if I find any such thing.
Paritosh, the issue with your method is that it only applies to the Mats with the type of CvType.CV_8U or CvType.CV_8S, since those Mats can be contained in a byte array. If the type of the Mat is, lets say, CvType.CV_32F, you would need a float array to hold the data. The float array cannot be System.arraycopied into a byte[] targetPixels array.
