tesseract-ocrHow do I integrate tesseract OCR into a Qt application?

To integrate tesseract OCR into a Qt application, you need to install the tesseract library and the Qt bindings for tesseract.

1. Install tesseract library:

   • Download the tesseract library from here
   • Extract the library and build it
   • Install the library in the system

2. Install Qt bindings for tesseract:

   • Download the Qt bindings for tesseract from here
   • Extract the library and build it
   • Install the library in the system

3. Use the tesseract library in your Qt application:

   • Include the tesseract library in your Qt project
   • Use the tesseract API to perform OCR on images

// Example code to perform OCR on an image
#include <tesseract/baseapi.h>
#include <leptonica/allheaders.h>

int main(int argc, char *argv[]) {
    // Initialize tesseract API
    tesseract::TessBaseAPI *api = new tesseract::TessBaseAPI();
    api->Init(NULL, "eng");

    // Read the image
    Pix *image = pixRead("image.png");

    // Set the image for tesseract to process
    api->SetImage(image);

    // Perform OCR
    char* outText = api->GetUTF8Text();

    // Print the output
    printf("OCR output:\n%s", outText);

    // Cleanup
    api->End();
    delete [] outText;
    pixDestroy(&image);

    return 0;
}

Output example

OCR output:
This is a sample text

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