Matrox SureDotOCR™ is the first OCR vision technology specifically designed to overcome the reading challenges associated with inkjet-printed, dot-matrix text in vision inspection applications
Matrox Imaging Library: Redefining character recognition
Matrox Imaging Library (MIL) provides a comprehensive set of character recognition tools: SureDotOCR, String Reader and OCR. Use them individually or in combination to read text that is engraved, etched, marked, printed, punched or stamped on surfaces, in a variety of vision applications, particularly on packaging lines including product inspection and retrieval.
Matrox SureDotOCR: Reliably read challenging dot-matrix text
The SureDotOCR tool is the first OCR technology specifically designed to overcome the challenges of reading inkjet-printed, dot-matrix text including distorted and misaligned text as well as uneven backgrounds and illumination. Its use is straightforward:
- Requires the dot size and the dimension alone of the text region; location is not necessary
- Reads text located at any angle, with varying contrast and on an uneven background
- Interprets distorted and touching characters as well as characters of varying scale
- Recognizes punctuation marks and blank spaces
- Supports the creation and editing of character fonts while including predefined fonts
- Handles multiple lines of text where each line can utilize a different font
- Enhances recognition rates as it allows user-defined constraints, overall and at specific character positions
- Provides greater robustness and flexibility than case-specific techniques that convert dot-matrix characters into solid ones for reading with traditional character recognition tools
Matrox String Reader: Quickly locate and read solid-character text
The String Reader tool is based on a sophisticated technique that uses geometric features to quickly locate and read text made up of solid characters, in images where these characters are well separated from the background and from one another. It is designed for ease-of-use:
- Handles text strings with a known or unknown number of evenly or proportionally-spaced characters
- Accommodates changes in character angle with respect to the string, aspect ratio, scale, and skew, as well as contrast reversal
- Strings can be located across multiple lines and at a slight angle
- Reads from multiple pre-defined (TrueType™ and Postscript™) or user-defined Latin-based fonts
- Includes ready-made Latin-based unified contexts for automatic number plate recognition (ANPR) and machine print
- Strings can be subject to user-defined constraints, overall and at specific character positions, to further increase recognition rates
- Includes String Expert, a utility to help fine-tune settings and troubleshoot poor results
Matrox OCR: Rapidly read evenly-spaced characters
The OCR tool utilizes a template matching method to very quickly read text with a known number of evenly spaced characters.
- Reads text strings with a consistent character size even if the strings themselves are at an angle
- Reads characters with one of the provided OCR-A, OCR-B, MICR CMC-7, MICR E-13B, SEMI M12-92 and SEMI M13-88 fonts or a user-defined font
- Increases recognition rates as strings can be subject to user-defined constraints, overall and at specific positions
