JiaJiaOCR

import com.jiajia.common_object.*;
import com.jiajia.core.JiaJiaOCR;
import org.apache.commons.lang3.tuple.Pair;

import java.util.List;

public class QuickStart {
    public static void main(String[] args) throws Exception {
        // Create an instance (OpenCV loads automatically; models load on demand)
        try (JiaJiaOCR ocr = JiaJiaOCR.builder()) {
            List<Pair<Text, Box>> results = ocr.recognizeGeneralText("general.png");
            for (Pair<Text, Box> item : results) {
                System.out.println(item.getLeft().getText());
            }
        }
    }
}

try (JiaJiaOCR ocr = JiaJiaOCR.builder()) {
    List<Pair<Text, Box>> results = ocr.recognizeGeneralText("general.png");
    for (Pair<Text, Box> item : results) {
        System.out.println(item.getLeft().getText());            // text
        System.out.println(item.getRight().getScore());          // confidence
        System.out.println(item.getRight().getLinePosition());   // 8-point coordinates
    }
}

try (JiaJiaOCR ocr = JiaJiaOCR.builder()) {
    List<Pair<Text, Box>> results = ocr.recognizeHandwrittenText("handwriting.jpg");
    for (Pair<Text, Box> item : results) {
        System.out.println(item.getLeft().getText());
    }
}

try (JiaJiaOCR ocr = JiaJiaOCR.builder()) {
    List<Layout> layouts = ocr.detectLayout("layout.png");
    for (Layout l : layouts) {
        System.out.println(l.getLabel() + ", confidence: " + l.getConfidence()); // type & confidence
        System.out.println(Arrays.toString(l.getBbox()));                          // bounding box
    }
}

try (JiaJiaOCR ocr = JiaJiaOCR.builder()) {
    Boxes boxes = ocr.detectTextLines("general.png");
    for (Box box : boxes.getBoxes()) {
        System.out.println(Arrays.toString(box.getLinePosition()));                // 8-point coordinates
    }
}

try (JiaJiaOCR ocr = JiaJiaOCR.builder()) {
    List<DetectionResult> tables = ocr.detectTables("table.png");
    for (DetectionResult t : tables) {
        System.out.println(t.getClassLabel() + ", confidence: " + t.getConfidence());
        System.out.println(t.getRect());                                           // table region
    }
}

try (JiaJiaOCR ocr = JiaJiaOCR.builder()) {
    // Step 1: run general OCR
    List<Pair<Text, Box>> ocrResults = ocr.recognizeGeneralText("table.png");
    // Step 2: recognize table structure
    TableResult table = ocr.recognizeTableFromOCR("table.png", ocrResults);
    System.out.println(table.getHtml());        // HTML result
    System.out.println(table.getTableJson());   // structured JSON (rows & columns)
}

try (JiaJiaOCR ocr = JiaJiaOCR.builder()) {
    List<TableResult> tables = ocr.recognizeTables("table.png");
    for (TableResult t : tables) {
        System.out.println(t.getHtml());
        System.out.println(t.getTableJson());
    }
}

try (JiaJiaOCR ocr = JiaJiaOCR.builder()) {
    List<String> pageImages = PdfConvert.convertPdfToImages("doc.pdf", "pdf_images");
    for (String img : pageImages) {
        List<Pair<Text, Box>> results = ocr.recognizeGeneralText(img);
        for (Pair<Text, Box> item : results) {
            System.out.println(item.getLeft().getText());
        }
    }
}

// Cancellation: pass a CancellationToken and call cancel() from another thread
CancellationToken token = new CancellationToken();
new Thread(token::cancel).start();
ocr.recognizeGeneralText("general.png", token);

// Multi-threaded batch: share a single instance (warm it up first)
JiaJiaOCR sharedOcr = JiaJiaOCR.builder();
sharedOcr.recognizeGeneralText("general.png");   // warm up: load models once
// then call sharedOcr.recognizeGeneralText(...) concurrently from multiple threads