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我正在尝试检索我的网络摄像头支持的可用图片大小分辨率; 使用OpenCV库.我尝试过使用类似的Android问题/答案,但无济于事.(例如Android相机支持的图片尺寸).这是我的代码:

import org.opencv.highgui.VideoCapture;
import org.opencv.core.Size;

public class MyCameraCaptureClass {

public static void main(String[] args) {
    System.out.println("Hello, OpenCV");
    System.out.println("This program will display the webcam's supported sizes");

    System.loadLibrary("opencv_java248"); //load .dll for the jar

    VideoCapture vidCap0 = new VideoCapture(0);

    if (vidCap0.isOpened()) {
        System.out.println("Camera found, and it works so far...");

        for (Size aSize : vidCap0.getSupportedPreviewSizes()) {
            System.out.println("Doesn't print this at all");
            System.out.println("Height:" + aSize.height + "Width:" + aSize.width);
        }
    }
    vidCap0.release();
    }
}

堆栈跟踪是:

Exception in thread "main" java.lang.Exception: unknown exception …