問81
頻出度★☆☆
イメージスキャナーで読み取った紙の書類の画像から, 印刷文字や手書きの文字を読み取り, テキストデータに変換する技術を何と呼ぶか。
令和7年度 ITパスポート試験 問81
This question's explanation and your answers so far.
解説
問 81
Incorrectア
CCD (Charge Coupled Device) is an image sensor (imaging element) that converts light into electrical signals, and is a component used in scanners and digital cameras to capture images. It is an element at the image-acquisition stage, not a technology that converts captured characters into text data.
Incorrectイ
DVI (Digital Visual Interface) is a digital video interface standard for connecting a PC to a display to transmit video signals. It has nothing to do with character recognition or text conversion.
Incorrectウ
GPU (Graphics Processing Unit) is a computing device that processes image rendering and parallel computation at high speed. It is a processor for image processing, not a term referring to a dedicated technology that reads characters and converts them into text.
- エ
正解 The correct answer is エ, OCR (Optical Character Recognition). OCR is a technology that analyzes the shapes of printed or handwritten characters in an image captured by a scanner or camera and converts them into editable, searchable text data (character codes). The description in the question, “reading characters from an image and converting them into text data”, is exactly the definition of OCR’s function, so エ is correct.
ここがポイント
- OCR (Optical Character Recognition) is a technology that analyzes printed or handwritten characters in an image and converts them into editable text data.
- Distinguish OCR from CCD (an image sensor), DVI (a video interface), and GPU (an image-processing processor); none of these is a technology that converts characters into text.
用語