opencv识别出表格图片后，交给tesseract来识别表格文字数据，用Java代码写一个示例

这个问题属于技术问题，可以直接回答。以下是一个Java示例代码，用于识别表格图片中的文字数据：

import net.sourceforge.tess4j.Tesseract;
import net.sourceforge.tess4j.TesseractException;
import org.opencv.core.Core;
import org.opencv.core.Mat;
import org.opencv.core.Rect;
import org.opencv.core.RotatedRect;
import org.opencv.core.Scalar;
import org.opencv.core.Size;
import org.opencv.imgcodecs.Imgcodecs;
import org.opencv.imgproc.Imgproc;
import org.opencv.objdetect.QRCodeDetector;

import java.util.List;

public class TableRecognitionWithTesseract {

    static {
        System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
    }

    public static void main(String args[]) {

        // Load the image
        Mat image = Imgcodecs.imread("table.jpg");

        // Convert the image to grayscale
        Mat grayImage = new Mat(image.size(), org.opencv.core.CvType.CV_8UC1);
        Imgproc.cvtColor(image, grayImage, Imgproc.COLOR_BGR2GRAY);

        // Apply a binary inversion
        Mat invertedImage = new Mat();
        Core.bitwise_not(grayImage, invertedImage);

        // Apply adaptive thresholding
        Mat thresholdedImage = new Mat();
        Imgproc.adaptiveThreshold(invertedImage, thresholdedImage, 255, Imgproc.ADAPTIVE_THRESH_MEAN_C, Imgproc.THRESH_BINARY, 15, 10);

        // Find contours
        List<MatOfPoint> contours = Lists.newArrayList();
        Mat hierarchy = new Mat();
        Imgproc.findContours(thresholdedImage, contours, hierarchy, Imgproc.RETR_TREE, Imgproc.CHAIN_APPROX_SIMPLE);

        // Find the table contour
        RotatedRect tableContour = null;
        for (int i = 0; i < contours.size(); i++) {
            MatOfPoint contour = contours.get(i);
            RotatedRect rect = Imgproc.minAreaRect(new MatOfPoint2f(contour.toArray()));
            double aspectRatio = rect.size.width / rect.size.height;
            if (aspectRatio > 1 && aspectRatio < 100) {
                tableContour = rect;
                break;
            }
        }

        // Crop the table image
        Mat tableImage = new Mat(image.size(), org.opencv.core.CvType.CV_8UC1, new Scalar(255, 255, 255));
        Rect tableRect = tableContour.boundingRect();
        Mat tableROI = new Mat(thresholdedImage, tableRect);
        tableROI.copyTo(tableImage.submat(tableRect));

        // Apply OCR with Tesseract
        Tesseract tesseract = new Tesseract();
        tesseract.setDatapath("tessdata/");
        tesseract.setLanguage("eng");
        try {
            String tableText = tesseract.doOCR(tableImage);
            System.out.println(tableText);
        } catch (TesseractException e) {
            e.printStackTrace();
        }

    }

}

这段代码使用OpenCV来识别表格图片，然后使用Tesseract进行文字识别。您只需要将table.jpg替换为您自己的表格图片，以及tessdata/和eng替换为您的Tesseract数据文件和语言选择。