Optical Character Recognition (OCR) Gaming Project in C++

Projects Inventory

3 months ago

#include <iostream>
#include <tesseract/baseapi.h>
#include <leptonica/allheaders.h>

int main() {
    // Initialize Tesseract API
    tesseract::TessBaseAPI *api = new tesseract::TessBaseAPI();
    if (api->Init(NULL, "eng")) {  // Initialize with the English language
        std::cerr << "Could not initialize tesseract.\n";
        return 1;
    }

    // Load an image from file
    Pix *image = pixRead("image.png");  // Replace with your image file path
    if (image == NULL) {
        std::cerr << "Could not open image file.\n";
        api->End();
        return 1;
    }

    // Set the image for OCR processing
    api->SetImage(image);

    // Perform OCR
    char *text = api->GetUTF8Text();
    if (text == NULL) {
        std::cerr << "Could not perform OCR.\n";
        pixDestroy(&image);
        api->End();
        return 1;
    }

    // Output the extracted text
    std::cout << "Extracted Text:\n" << text << std::endl;

    // Clean up
    delete[] text;
    pixDestroy(&image);
    api->End();

    return 0;
}

#include <iostream>

#include <tesseract/baseapi.h>

#include <leptonica/allheaders.h>

int main() {

// Initialize Tesseract API

tesseract::TessBaseAPI *api = new tesseract::TessBaseAPI();

if (api->Init(NULL, "eng")) { // Initialize with the English language

std::cerr << "Could not initialize tesseract.\n";

return 1;

}

// Load an image from file

Pix *image = pixRead("image.png"); // Replace with your image file path

if (image == NULL) {

std::cerr << "Could not open image file.\n";

api->End();

return 1;

}

// Set the image for OCR processing

api->SetImage(image);

// Perform OCR

char *text = api->GetUTF8Text();

if (text == NULL) {

std::cerr << "Could not perform OCR.\n";

pixDestroy(&image);

api->End();

return 1;

}

// Output the extracted text

std::cout << "Extracted Text:\n" << text << std::endl;

// Clean up

delete[] text;

pixDestroy(&image);

api->End();

return 0;

}

Explanation:

Include Tesseract and Leptonica Headers:
- #include <tesseract/baseapi.h>: Includes the Tesseract API for OCR.
- #include <leptonica/allheaders.h>: Includes Leptonica library headers for image processing.
Initialize Tesseract API:
- tesseract::TessBaseAPI *api = new tesseract::TessBaseAPI();: Creates an instance of the Tesseract API.
- api->Init(NULL, "eng");: Initializes the Tesseract API with the English language. You may specify the path to trained data files if they are not in the default location.
Load Image:
- Pix *image = pixRead("image.png");: Loads the image from the file. Replace "image.png" with the path to your image file.
- Checks if the image was loaded successfully.
Set Image for OCR:
- api->SetImage(image);: Sets the loaded image for OCR processing.
Perform OCR:
- char *text = api->GetUTF8Text();: Extracts text from the image. The result is a UTF-8 encoded string.
Output Extracted Text:
- Prints the extracted text to the console.
Clean Up:
- delete[] text;: Frees the memory allocated for the extracted text.
- pixDestroy(&image);: Frees the memory used by the image.
- api->End();: Cleans up and releases resources used by the Tesseract API.

Prerequisites:

Tesseract OCR: Ensure Tesseract OCR is installed on your system.
Leptonica Library: Ensure Leptonica (a library used by Tesseract for image processing) is installed.

Compilation and Execution:

Compile with Tesseract and Leptonica:

g++ -o ocr_example ocr_example.cpp `pkg-config --cflags --libs tesseract lept`

1	g++ -o ocr_example ocr_example.cpp `pkg-config --cflags --libs tesseract lept`

Run the Program:

./ocr_example

1	./ocr_example

Explanation:

Prerequisites:

Compilation and Execution:

Related Posts: