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Zone types.
| Value | Member | Description | |
|---|---|---|---|
| 0 | Text | Flowing text type zone. | |
| 1 | Table | Table type zone. | |
| 2 | Graphic | Zone containing graphics (Not sure). | |
| 3 | Omr | OMR (Optical Markup Recognition) zone. | |
| 4 | Micr | MICR (Magnetic Ink Character Recognition) zone. Check processing. Currently, the engine does not auto-detect MICR zones. Instead, use MICRCodeDetectionCommand to detect the MICR zone area automatically, if needed, and add an OcrZone object with OcrZoneType.Micr to the page. After the zone with MICR data is recognized, call the ExtractMicrData method to parse the row data into an OcrMicrData object. | |
| 5 | Icr | ICR (Intelligent Character Recognition) zone. Handwritten text and numbers. | |
| 6 | Mrz | MRZ (Machine Readable Zone). Only applicable to passports and identity cards. Travel passports worldwide are MRPs (machine-readable passports). They are standardized by the ICAO Document 9303 (endorsed by the International Organization for Standardization and the International Electrotechnical Commission as ISO/IEC 7501-1) and have a special machine-readable zone (MRZ). MRZs are usually at the bottom of the identity page at the beginning of a passport. MRZ text uses capital letters and digits separated by one or more < characters (for example, P<<FIRSTNAME<<<<<LASTNAME). Currently, the engine does not auto-detect MRZ zones. Instead, call MRZCodeDetectionCommand to detect the MRZ zone area automatically, if needed, and add an OcrZone object with OcrZoneType.Mrz to the page. After a zone with MRZ data is recognized, call IOcrZoneCharacters to parse the row data. |
|
| 7 | Barcode | Barcode zone. Currently, the engine does not auto-detect barcode zones. Instead, call the BarcodeReader to detect the barcode zone area(s) automatically, if needed, and add an OcrZone object with OcrZoneType.Barcode to the page. For future use by LEADTOOLS. | |
| 8 | None | No recognition zone. | |
| 9 | FieldData | Field data zone (for example, the name, address, and date fields in passports and identity cards). Field data uses capital letters, digits, and separators. Currently, the engine does not auto-detect field data zones. Set field data manually if a zone is known to contain field data. After a zone with field data is recognized, call IOcrZoneCharacters to parse the row data. | |
| 10 | Cmc7 | CMC7 zone filling method. ConnectCode MICR CMC7 font is based on the CMC-7 (ISO 1004) industry standard. |
The OcrZoneType is used to classify the zone into one of the three basic zone-categories: text, table or graphics. For these, use OcrZoneType.Text, OcrZoneType.Table, and OcrZoneType.Graphic, respectively.
For text zones, the following OcrZone members provide extra information about the text inside the zone: OcrZone.CharacterFilters, OcrZone.TextDirection and OcrZone.TextStyle.
The OcrZoneType.Table type is for table-type zones. In this type of zone is specified, the OCR engine will try to reconstruct the original table text layout of the zone in the final output document.
For graphic zones use the OcrZoneType.Graphic type. If OcrZoneType.Graphic is specified, no recognition will be run on the zone and all other recognition-related settings will be ignored.
OcrZoneType.None specifies an area to ignore when recognizing the page.
Each OCR engine supports different type of zones. To get the type of zones supported by an engine, use IOcrZoneManager.GetSupportedZoneTypes. Trying to set a zone type that is not supported by the engine being used will cause an error.