java - 有没有办法在 UI（JavaFX）中显示 tess4j 进度？

Question

我需要在 Javafx UI 中显示 tess4j（OCR 库）进度。

public void testOCR() {
    File file = new File("test.png");
    ITesseract instance = new Tesseract();

    try {
        String s = instance.doOCR(file);
        instance.setLanguage("fas");
        System.out.println(s);

    } catch (TesseractException e) {
        System.out.println(e.getMessage());
    }
}

Answer 1

您可能对 tess4J 存储库中的 progressMonitor 代码感兴趣。我认为这与您正在寻找的相似。

package net.sourceforge.tess4j;

import com.sun.jna.Pointer;
import net.sourceforge.tess4j.util.LoggHelper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import static net.sourceforge.tess4j.ITessAPI.TRUE;

class ProgressMonitor extends Thread {

ITessAPI.ETEXT_DESC monitor;
StringBuilder outputMessage = new StringBuilder();

private static final Logger logger = LoggerFactory.getLogger(new LoggHelper().toString());

public ProgressMonitor(ITessAPI.ETEXT_DESC monitor) {
    this.monitor = monitor;
}

public String getMessage() {
    return outputMessage.toString();
}

@Override
public void run() {
    try {
        while (true) {
            logger.info("ocr alive: " + (monitor.ocr_alive == TRUE));
            logger.info("progress: " + monitor.progress);
            outputMessage.append(monitor.more_to_come);
            if (monitor.progress >= 100) {
                break;
            }
            Thread.sleep(100);
        }
    } catch (Exception ioe) {
        ioe.printStackTrace();
    }
}

/**
 * Cancels OCR operation.
 */
public void cancel() {
    monitor.cancel = new ITessAPI.CANCEL_FUNC() {
        @Override
        public boolean invoke(Pointer cancel_this, int words) {
            return true;
        }
    };
}

/**
 * Resets cancel flag.
 */
public void reset() {
    monitor.cancel = null;
}

}