VI Змістовий модуль «Призначення комп’ютера»

Practical Lesson 1: “Optical Character Recognition Systems ”

1. Read the text. Replace the Ukrainian words into their English variants.

deduce page layout scanning recognition formatting capabilities

accuracy takes account of is stored spell-checking techniques reading the text

Optical Character Recognition Systems

There are three essential elements to OCR technology – сканування,розпізнавання та читання тексту. Initially, a printed document is scanned by a camera. OCR software then converts the images into recognized characters and words. The synthesizer in the OCR system then speaks the recognized text. Finally, the information зберігається in an electronic form either in a personal computer (PC) or in the memory of the OCR system itself.

The recognition process враховує the logical structure of the language. An OCR system will зробить висновок that the word "tke" at the beginning of the sentence is a mistake and should be read as the word "the." OCRs also use a lexicon and apply методику перевірки правопису similar to those found in many word processors.

All OCR systems create temporary files containing the texts’ characters and схему розміщення сторінки. In some OCRs these temporary files can be converted into formats retrievable by commonly used computer software such as word processors and spreadsheet and database software. The blind or visually impaired user can access the scanned text by using adaptive technology devices that magnify the computer screen or provide speech or braille output.

Current generation OCR systems provide very good точність і форматуючу здатність at prices that are up to ten times lower than a few years ago.

2. Find the appropriate definition to the words:

essential	a symbol used in a writing system, such as a letter of the alphabet
to convert	arrangement of parts, or elements
character	to put into action
recognition	glossary or thesaurus
structure	absolutely necessary; indispensable
lexicon	with capability of being rescued, regained or saved
to apply	a document that has columns and rows which are used to calculate numbers and organize information
temporary	to change (something) into a different form or so that it can be used in a different way
retrievable	lasting, used, serving, or enjoyed for a limited time
spreadsheet	the sensing and encoding of printed or written data by a machine