Recognize single line

If an image contains a single line of text, it can be recognized in the fastest possible mode, without automated corrections, areas detection, and other resource-consuming steps.

To extract text from such images, use the following functions:

Function	Description
line()	Read a single-line image.
line_from_raw_bytes()	Read a single-line image provided as an array of pixels.
line_abc()	Read only the predefined list of characters from the single-line image.
line_abc_from_raw_bytes()	Read only the predefined list of characters from the single-line image provided as an array of pixels.

std::string image_path = "../Data/Source/Source.img";
const size_t len = 4096;
wchar_t buffer[len] = { 0 };
aspose::ocr::line(image_path.c_str(), buffer, len);
std::wcout << buffer;

Please note that this function only works for images containing a single line of text! Using it on multi-line images will lead to incorrect recognition results.

Performance impact

This function is about 7 times faster than normal OCR and is highly recommended for batch processing large numbers of very simple images.

Drawbacks

This recognition function only supports images in the following formats:

• 24-bit PNG,
• JPEG,
• BMP.

It also does not work with skewed images and does not support recognition settings. However, you can preprocess an image before sending it to the OCR engine.