我正试图遵循OpenCV Javatorial,以学习图像处理方面的一些知识。

The tutorial suggest Java8, but I am using Java15 + JavaFX17. At the part of "Your First JavaFX Application with OpenCV", I encountered an issue, I can t convert BufferedImage to Image, as a result I can t show any frames from camera in my application.

我的法典如下:

package application;

import java.lang.System;
import java.awt.image.BufferedImage;
import java.awt.image.DataBufferByte;

import org.opencv.core.Mat;

import javafx.application.Platform;
import javafx.beans.property.ObjectProperty;
import javafx.embed.swing.SwingFXUtils;
import javafx.scene.image.Image;

public final class Utils
{
    public static Image mat2Image(Mat frame)
    {
        try
        {
            System.err.println("Can you just simpily return something?");
            BufferedImage test = matToBufferedImage(frame);
            System.err.println(test);
            Image test2 = SwingFXUtils.toFXImage(test, null);
            System.err.println(test2);
            return SwingFXUtils.toFXImage(matToBufferedImage(frame), null);
        }
        catch (Exception e)
        {
            System.err.println("Cannot convert the Mat obejct: " + e);
            return null;
        }
    }
    
    public static <T> void onFXThread(final ObjectProperty<T> property, final T value)
    {
        Platform.runLater(() -> {
            property.set(value);
        });
    }
    
    private static BufferedImage matToBufferedImage(Mat original)
    {
        // init
        BufferedImage image = null;
        int width = original.width(), height = original.height(), channels = original.channels();
        byte[] sourcePixels = new byte[width * height * channels];
        original.get(0, 0, sourcePixels);
        
        if (original.channels() > 1)
        {
            image = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
        }
        else
        {
            image = new BufferedImage(width, height, BufferedImage.TYPE_BYTE_GRAY);
        }
        final byte[] targetPixels = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
        System.arraycopy(sourcePixels, 0, targetPixels, 0, sourcePixels.length);

        return image;
    }
}

我试图利用言论和一些丑闻的信息来说明所发生的情况:

Can you just simpily return something?
BufferedImage@1b088e58: type = 10 ColorModel: #pixelBits = 8 numComponents = 1 color space = java.awt.color.ICC_ColorSpace@5333a296 transparency = 1 has alpha = false isAlphaPre = false ByteInterleavedRaster: width = 640 height = 480 #numDataElements 1 dataOff[0] = 0

我的ToBufferedImage通常工作(也许我错了,但却没有工作),但SwadUtils.toFXImage失败。 我认为,我需要一些帮助,非常感谢你。