Why my ocr is not performing for multi page pdf in java
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.awt.image.BufferedImage;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDPageTree;
import org.apache.pdfbox.rendering.PDFRenderer;
import org.json.JSONArray;
import org.json.JSONObject;
import net.sourceforge.tess4j.ITesseract;
import net.sourceforge.tess4j.Tesseract;
import net.sourceforge.tess4j.TesseractException;
public class PDFReader {
public static void main(String[] args) throws IOException, TesseractException {
// Load multi-page PDF
PDDocument document = PDDocument.load(new File("multi-page.pdf"));
// Initialize Tess4J
ITesseract tess = new Tesseract();
tess.setDatapath("tessdata");
tess.setLanguage("eng");
// Iterate through pages and extract text with OCR
PDPageTree pages = document.getPages();
for (int i = 0; i < pages.getCount(); i++) {
PDPage page = pages.get(i);
PDFRenderer renderer = new PDFRenderer(document);
BufferedImage image = renderer.renderImageWithDPI(i, 300);
String text = tess.doOCR(image);
System.out.println(text);
}
}
}
.
![Why my ocr is not performing for multi page pdf in java
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.awt.image.BufferedImage;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDPageTree;
import org.apache.pdfbox.rendering.PDFRenderer;
import org.json.JSONArray;
import org.json.JSONObject;
import net.sourceforge.tess4j.ITesseract;
import net.sourceforge.tess4j.Tesseract;
import net.sourceforge.tess4j.TesseractException;
public class PDFReader {
public static void main(String[] args) throws IOException, TesseractException {
// Load multi-page PDF
PDDocument document = PDDocument.load(new File("multi-page.pdf"));
// Initialize Tess4J
ITesseract tess = new Tesseract();
tess.setDatapath("tessdata");
tess.setLanguage("eng");
// Iterate through pages and extract text with OCR
PDPageTree pages = document.getPages();
for (int i = 0; i < pages.getCount(); i++) {
PDPage page = pages.get(i);
PDFRenderer renderer = new PDFRenderer(document);
BufferedImage image = renderer.renderImageWithDPI(i, 300);
String text = tess.doOCR(image);
System.out.println(text);
}
}
}](https://image.slidesharecdn.com/whymyocrisnotperformingformultipagepdfinjavaimportjava-230323065642-5efb2bf1/85/Why-my-ocr-is-not-performing-for-multi-page-pdf-in-javaimport-java-pdf-1-320.jpg)
