Define Character Sets

SmartZone ICR allows one or more character sets to be defined using the CharacterSet class. SmartZone ICR provides an Add and Remove method to add or remove single or multiple characters in a string and/or pre-defined character sets to your current character set collection creating subsets as needed.

To see if a character is in the current Character Set, use the Contains method.

Language Support for Character Sets

If you have specified a language, it will be used to refine the contents of any character set containing alphabetic entries. For example, specifying a language of Italian and a character set of Alphanumeric would limit the returned results to only letters included in the Italian alphabet plus digits.

You have the choice of multiple language support including the following:

Language	Description
English	Is: a b c d e f g h i j k l m n o p q r s t u v w x y z A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9 ! " # % & ' ( ) * , - . / : ; ? @ \ _ { \| } $ ¢ £ ¥ € + < = >
French	Is the English character set plus: « » À Â Ç È É Ê Ë Î Ï Ô Ù Û Ü à â ç è é ê ë î ï ô ù û ü.
Spanish	Is the English character set plus: « » ¡ ¿ Á É Í Ñ Ó Ú Ü á é í ñ ó ú ü
Italian	Is the English character set plus: « » À È É Ì Ò Ù à è é ì ò ù
German	Is the English character set plus: « » „ Ä Ö Ü ä ö ü ß
Dutch	Is the English character set plus: À Á Â Ä Ç È É Ê Ë Ì Í Î Ï Ñ Ò Ó Ö Ù Ú Û Ü à á â ä ç è é ê ë ì í î ï ñ ò ó ö ù ú ü
Portuguese	Is the English character set plus: À Á Â Ç È É Ê Í Ò Ó Ô Õ Ú Ü à á â ç è é ê í ò ó ô õ ú ü
Norwegian	Is the English character set plus: « » Å Æ Ø å æ ø
Finnish	Is the English character set plus: « » Å Ä Ö å ä ö
Danish	Is the English character set plus: « » „ Å Æ Ø å æ ø
Swedish	Is the English character set plus: « » Å Ä Ö å ä ö
Western European	Is all the supported characters in English, French, Spanish, Italian, German, Dutch, Portuguese, Norwegian, Finnish, Danish, and Swedish.

For best recognition accuracy results, set the character set to the narrowest set possible, including all possible returned values, then limit any possible returns by applying pre-defined character sets listed here. Character sets are used to limit (reduce) possible returned values once a universe of possible returned values is defined. For example, since é is not included in the English language, in order to accurately read the word "Résumé", you would need to specify a language that included é, such as French, since that includes all English letters plus é. You could then improve recognition further by omitting any other characters you do not expect to encounter.

Predefined Character Sets

There are 11 additional pre-defined character sets available as properties:

#	Predefined Character Set	Description
1	AllAlphas	Includes all upper and lower case alpha characters.
2	AllCharacters	Includes all upper and lower case alpha, all digits, punctuation, currency and arithmetic characters. Note that [ and ] are omitted from SmartZone ICR.
3	AlphaNumeric	Includes all upper and lower case alpha and digit characters.
4	Arithmetic	Includes all digits, arithmetic and arithmetic punctuation characters *0123456789+<=>%()-.,/**
5	ArithmeticSymbols	Includes all arithmetic characters +<=>
6	Currency	Includes all digits, currency and currency punctuation characters 0123456789$¢€£¥,.'-=
7	CurrencySymbols	Includes all currency characters $¢€£¥
8	Digits	Includes all digits as characters 0123456789
9	LowerCase	Includes only lower case alpha characters abcdefghijklmnopqrstuvwxyzàáâãäåæçèéêëìíîïñòóôõöøùúûüß
10	PhoneNumber	Includes 0123456789-.+/EXText() The phone number's extension can be preceded by the individual characters x or X. You can also precede the extension with ext or EXT.
11	Punctuation	Includes only punctuation characters *!"#%&'(),-./:;?@\_{\|}¡¿«»„** Note that [ and ] are omitted from SmartZone ICR.
12	UpperCase	Includes only upper case alpha characters A B C D E F G H I J K L M N O P Q R S T U V W X Y Z À Á Â Ã Ä Å Æ Ç È É Ê Ë Ì Í Î Ï Ñ Ò Ó Ô Õ Ö Ø Ù Ú Û Ü

Edit Character Sets

Optimal recognition results are obtained by using the character set that includes all and only the characters that potentially are encountered.

The ability to modify character sets into subsets to increase accuracy, confidence and speed is available in SmartZone ICR using the following methods:

Add(String) - This method allows you to add any one or more characters to a current character set.
Add(CharacterSet) - This method allows you to concatenate character sets as needed.
Remove(String) - This method allows you to remove one or more characters from a character set.
Remove(CharacterSet) - This method allows you to remove an entire character set from the current character set.