...Limiting the number of characters to be read reduces the number of standard patterns to be compared, making it possible to read them with a relatively simple device. For example, an OCR hand scanner that can read numbers, a few English letters, and symbols can read characters by simply tracing the string of characters with the reading unit held in one hand. When reading handwritten characters, characters are significantly deformed, so simple pattern matching is not possible to recognize the characters. Instead, the structure of the read characters is analyzed to extract various shape features, and the characters are identified by comparing them with a recognition dictionary. ... *Some of the terminology that refers to "OCR hand scanner" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…読取りの対象文字数を限定すれば比較する標準パターンの数を少なくできるので,比較的簡単な装置で読み取ることができる。例えば数字と若干の英文字,記号を対象としたOCRハンドスキャナーは,片手でもてる読取部で文字の列をなぞるだけで文字を読み取ることができる。 手書文字の読取りでは,字の変形が著しいので簡単なパターン照合では文字の認識を行うことはできず,読み取った文字の構造を解析していろいろな形の特徴を抽出し,認識辞書と照合して文字を判定する。… ※「OCR ハンドスキャナー」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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