THPDFHeadlessOCROptions
Executable and Language choose Tesseract and the trained data; Scale defaults to 3 pixels per point, MinimumConfidence to 0, MaxMilliseconds to 120000, MaxTSVBytes to 16777216, MaxWords to 100000, MaxPixels to 100000000 and MaxWorkingBytes to 268435456
The caller-owned CancellationToken is optional; process output, page pixels, words and elapsed time are each checked independently