Java 기술은 계약서에 있는 공식 인감의 진위 여부를 어떻게 식별합니까?

import org.bytedeco.javacv.*;

public class SealDetection {
    public static void main(String[] args) throws Exception {
        // 加载图像
        OpenCVFrameConverter.ToMat converter = new OpenCVFrameConverter.ToMat();
        OpenCVFrameGrabber grabber = new OpenCVFrameGrabber("contract_image.jpg");
        grabber.start();
        Frame frame = grabber.grab();
        Mat image = converter.convert(frame);
        
        // 图像预处理
        Imgproc.cvtColor(image, image, Imgproc.COLOR_BGR2GRAY);
        Imgproc.threshold(image, image, 0, 255, Imgproc.THRESH_BINARY_INV | Imgproc.THRESH_OTSU);
        
        // 公章检测
        MatVector contours = new MatVector();
        Imgproc.findContours(image, contours, new Mat(), Imgproc.RETR_EXTERNAL, Imgproc.CHAIN_APPROX_SIMPLE);
        for (int i = 0; i < contours.size(); i++) {
            Rect boundingRect = Imgproc.boundingRect(contours.get(i));
            if (isValidSeal(boundingRect)) {
                System.out.println("检测到合法的公章");
            }
        }
        grabber.stop();
    }
    
    private static boolean isValidSeal(Rect boundingRect) {
        // 根据公章的尺寸和形状进行判断
        int width = boundingRect.width;
        int height = boundingRect.height;
        if (width > 50 && width < 200 && height > 50 && height < 200) {
            return true;
        }
        return false;
    }
}