PDFのOCR処理について(無料で変換する方法も紹介します)
OCR(光学式文字認識)とは何ですか?
光学式文字認識(OCR)は、手書き文字や印刷文字をデジタルテキストデータに変換し、スキャナやカメラなどの光学機器で読み取り、解析することでコンピュータが使用できる技術です。
例えば、各書籍を編集可能なデータとしてコンピュータにインポートする場合、文字を手動で入力すると多くの時間がかかりますが、ocrは作業時間を大幅に短縮し、タイプミスや二重入力などのヒューマンエラーを防ぐことができます。
OCR処理され、ファイルに埋め込まれたテキストデータに編集でき、文字の検索も可能なので、様々な場面で利用されています。
PDFを無料の編集可能なテキストに変換する方法
PDFを無料の編集可能なテキストに変換する方法については、こちらをご覧ください。
フリーソフトウェアでテキストに変換する
フリーソフトウェアを使用してPDFテキストを編集可能なデータに変換する方法については、次の記事を参照してください。
おすすめのフリーソフトをオンライン型とインストール型に分けてご紹介します。
PDFをOCR処理できるおすすめフリーソフト
Google ドライブのテキスト
詳しくは、Google ドライブを使用して PDF にテキストを送信する方法をご覧ください。
GoogleドライブのOCR機能には、ロードするデータの量が限られていますが、有料のOCRソフトウェアよりも正確です。
PDF がテキストに変換されました。
Adobe Acrobat Pro DC で OCR を処理する方法
Adobe Acrobat Pro DC アプリを使用して、PDF テキストを編集可能なデータに変換する方法について説明します。
作業時間:5分
OneNote で OCR を処理する方法
マイクロソフトの OneNote を使用して PDF を OCR する方法については、こちらをご覧ください。
テキストを作成する PDF を開きます。(表示できるソフトウェアは関係ありません))
OneNote を開き、画面の左上にある[ファイル]タブを選択します。
(1) 選択[New]タブ。
(2)「ノートブック名」と入力し、(2)を押す[Create notebook]ボタン。
[Microsoft OneNote]ダイアログ ボックスが表示されます。
共有するには、「任意の回答(たとえば、今は共有しません)]を押します。
ボタン。
(1) 選択[Insert]タブ, (2)[Screen area].
ワンノート画面が一度閉じると、開いたばかりのPDF画面が表示されます。
選ぶ[OCR processing range]カーソルを押しながらドラッグします。
選択した範囲が OneNote に挿入されました。
(1) 右クリック[Inserted image]を選択し、(2) を選択します。[Copy text from image].
(1) 右クリック[Blank space where you want to insert OCR processed text](2)選択[Mark in red frame]「貼り付けオプション」で。
OCR 処理されたテキストが貼り付けられました。
Mac用
オンラインフリーソフトウェアであるlightPDFを使用して、Mac上でPDFファイルをテキスト化する方法を学びます。
ダイアログボックスが表示されます。
(1) 選択[Arbitrary file]とプレス (2)[Open]ボタン。
(1) 元のファイルの言語を選択し、(2) 選択[Japanese].
[[Convert]ボタン。
[[Download]ボタン。
(1)を押す[v]ボタンを画面左下に置き、(2)を選択します。[Show in Finder].
「ダウンロード」ダイアログボックスが表示されました。
ダブルクリック[Downloaded Files]をクリックして開きます。
PDF がテキストファイルに変換されました。
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