Locating Multidirectional Text with OCR

Multidirectional text is one area where current commercial OCR systems fail. In most commercial systems, a dominant text direction is found. Text is then OCRed along this dominant direction, but not along any subdominant directions. If text on the same page occurs in multiple directions, such as horizontal and vertical text occurring at the same time, it is generally recognized only in the predominant direction. Many documents, e.g., patent litigation, have important text running in multiple directions. The ability to detect these text regions, in any direction, and OCR them is a good litmus test for any commercial OCR system.

CVISION OCR (PdfCompressor) passes this test. Most commercial systems do not.

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