HPDFRecognizeHeadlessPage
function HPDFRecognizeHeadlessPage(Document: THPDFHeadlessDocument;
PageIndex: Integer; const Options: THPDFHeadlessOCROptions): THPDFHeadlessOCRResult;Render and recognise an actual zero-based page by means of native Cairo and a shell-free Tesseract process; this recognition function never mutates the document
Extraction permissions, image and TSV budgets, strict Unicode, confidence and word coordinates, cancellation and process deadlines are all enforced; cancellation and timeout both terminate and reap the process