BS EN 13619-2002 邮政服务.邮件处理.处理信件的光学特征

标准号：BS EN 13619-2002
中文标准名称：邮政服务.邮件处理.处理信件的光学特征
英文标准名称：Postal services - Mail item processing - Optical characteristics for processing letters
标准类型：M82
发布日期：2002/11/28 12:00:00
实施日期：2002/11/28 12:00:00
中国标准分类号：M82
国际标准分类号：03.240
适用范围：This European Standard specifies optical characteristics for processing letters and gives guidelines on the valuesof these attributes that will assure a high level of address readability. It is aimed at facilitating relations betweenPostal Operators and Customers by providing information that mailers can use to ensure that the addresses theyprint can be processed successfully by postal automation systems.The standard is intended to support:¾assessment of the probable readability of a printed address, using given address recognition equipment,without actually submitting it to the equipment;¾determination of the changes in address printing characteristics that are required to achieve a desired level ofaddress readability using given address recognition equipment;¾assessment of the complexity, and thus the cost, of the address recognition equipment needed to achieve adesired level of readability of addresses with given printing characteristics.The standard applies to mail items whose size is up to and including C51, but may also be applied to oversizeitems, commonly referred to as C5+, and to flats. The address blocks covered are:¾the delivery address block;¾the sender address block if this is printed on the same side of the mail item as the delivery address block.The guidelines provided in the standard apply to address blocks as they appear on finished mail items whensubmitted to postal operators, and not just to addresses and the substrate on which they are printed. Users of thestandard are responsible for determining the physical parameters which are required to achieve compliance aftertaking account of characteristics which result from mail item features, other than printing, such as covering, the useof transparent window envelopes and the use of address labels.The guidelines are based on physical attributes that tend to influence the readability of addresses by opticalcharacter recognition (OCR) equipment and by video-coders. To the extent that this is possible, attributes havebeen selected so as to be easily controllable and to be measurable using simple, low-cost, means. The attributevalues given are based on common notions of typography and on colour reference systems that are likely to beknown by mailers. The values given should be interpreted as recommendations or guidelines, not as strict,mandatory, all-or-nothing rules.OCR systems are complex and their behaviour is therefore not easily modelled by simple attributes. As a result theambition of the standard is limited by the difficulty of defining some attributes in formal terms, even though theirinfluence on address readability has been proven. Where this is the case, the standard uses examples, lists ofpreferred values, or literal descriptions to give hints on how to maximise address readability.Since all attributes do not contribute uniformly to the readability of an address, the standard identifies two levels ofsalience for each attribute (high and normal). These two levels are designed to aid in the definition of readabilityclasses by users of the standard.This standard considers a printed address as being made up of a series of lines of printed information2. Guidelinesrelated to such address lines are relevant for all lines in an address block.