Image to Text Conversion | Aspose.OCR for C++

readme.md

Extract Text from Images BMP, JPG, GIF, PNG using C++ OCR Library

C++ codes listed below demonstrating how to extract text from image pages, specific areas of image or having single line information

More details at https://products.aspose.com/ocr/cpp/conversion/

Here is the list of all supported image formats https://docs.aspose.com/ocr/cpp/supported-file-formats/

For code integration there few prerequisite listed in installation section below.

Installation

Install from command line as nuget install Aspose.OCR.Cpp or via Package Manager Console of Visual Studio with Install-Package Aspose.OCR.Cpp.

Alternatively, get the offline MSI installer or DLLs in a ZIP file from downloads.

For further features of C++ OCR Library visit its detail documentation : https://docs.aspose.com/ocr/cpp/

convert-full-image-page-to-text.cpp

std::string png_image_path = "sample.png";

// Prepare buffer for result (in symbols, len_byte = length * sizeof(wchar_t))
const size_t leng = 4096;
wchar_t bffr[leng] = { 0 };

// Perform OCR on Page
size_t size = aspose::ocr::page(png_image_path.c_str(), bffr, leng);

//Print result
std::wcout << bffr << L"\n"; 

convert-image-page-area-to-text.cpp

std::string path = "sourceImage.jpg";

// Prepare buffer for result (in symbols, len_byte = length * sizeof(wchar_t))
const size_t leng = 4096;
wchar_t bfr[leng] = { 0 };

int x = 138, y = 352, w = 2033, h = 537;

// Perform OCR of page selected area
size_t size = aspose::ocr::page_rect(path.c_str(), bfr, leng, x, y, w, h);

//Print result
std::wcout << bfr << L"\n";

convert-image-single-line-characters-to-text.cpp

std::string path = "sample_image.jpg";

// Prepare buffer for result (in symbols, len_byte = len * sizeof(wchar_t))
const size_t leng = 4096;
wchar_t bffr[leng] = { 0 };

// Perform OCR to extract line text from image
size_t size = aspose::ocr::line(image_path.c_str(), bffr, leng);

//Print result
std::wcout << bffr << L"\n";