OCR-text extraction from images
AI-powered OCR for effortless text extraction
Perform OCR from images, PDFs. Start with Start. 画像、PDFからOCRを実行します。スタートで始めてください。
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画像から日本語テキストを読み取り、アクションの選択肢を提示
20.0 / 5 (200 votes)
Introduction to Optical Character Recognition (OCR)
Optical Character Recognition (OCR) is a technology that converts different types of documents, such as scanned paper documents, PDF files, or images captured by a digital camera, into editable and searchable data. The primary purpose of OCR is to digitize printed or handwritten text, enabling it to be processed electronically. OCR uses complex algorithms that recognize the shapes of characters in an image and convert them into text that can be manipulated, searched, or stored in a database. For example, an OCR system can scan a printed book, recognize the text on each page, and transform it into a digital document that can be edited in a word processor. Another scenario involves capturing text from road signs in an image, which can then be used in navigation systems for real-time processing.
Key Functions of OCR Technology
Text Extraction
ExampleExtracting text from a scanned contract to create an editable Word document.
ScenarioA legal firm uses OCR to quickly convert a large volume of scanned contracts into digital text, allowing lawyers to easily search, edit, and archive these documents without manually retyping the content.
Data Entry Automation
ExampleAutomating the input of handwritten survey responses into a digital database.
ScenarioA marketing company collects handwritten surveys from a focus group. Instead of manually entering the responses into a database, the company uses OCR to automatically extract and input the data, significantly speeding up the data processing time and reducing human error.
Translation and Accessibility
ExampleTranslating printed text in an image into another language and converting it to speech.
ScenarioA travel app uses OCR to recognize text in various languages from photos taken by users, then translates the text and reads it aloud, helping travelers understand signs, menus, and other written material in foreign countries.
Ideal Users of OCR Technology
Businesses and Enterprises
Businesses that handle a large volume of paperwork, such as legal firms, banks, and insurance companies, benefit greatly from OCR technology. OCR helps them digitize documents, making it easier to store, search, and retrieve information. This increases efficiency, reduces physical storage needs, and allows for better data management.
Educational Institutions and Researchers
Educational institutions, libraries, and researchers often need to convert printed books, articles, or handwritten notes into digital formats. OCR allows them to create searchable databases of text, which can be used for research, archiving, and educational purposes. This is particularly useful for preserving historical documents and making them accessible online.
How to Use OCR
Step 1
Visit aichatonline.org for a free trial without login, also no need for ChatGPT Plus.
Step 2
Upload the image or document you wish to extract text from. Ensure that the file format is supported, such as JPEG, PNG, or PDF.
Step 3
Adjust any settings for text recognition, such as selecting the desired language or text layout if applicable. These settings help improve accuracy for specific documents.
Step 4
Initiate the OCR process by clicking the 'Extract Text' button. Wait for the process to complete; the time taken will depend on the complexity and size of the document.
Step 5
Review and download the extracted text. You can also choose to copy it to your clipboard or export it in various formats such as TXT or DOCX.
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OCR Frequently Asked Questions
What is OCR and how does it work?
OCR, or Optical Character Recognition, is a technology that converts different types of documents, such as scanned paper documents, PDFs, or images captured by a digital camera, into editable and searchable data. It works by analyzing the structures of the characters in an image and converting them into text.
Can OCR recognize handwriting?
Yes, OCR can recognize handwriting, although its accuracy may vary depending on the clarity and legibility of the handwriting. Some advanced OCR tools include Handwritten Text Recognition (HTR) capabilities that are specifically designed for handwritten content.
Which languages are supported by OCR?
OCR technology supports a wide range of languages. Most OCR tools can recognize and process multiple languages, including English, Spanish, Chinese, Arabic, and many others. Language support may vary depending on the OCR tool used.
What are the common uses of OCR?
Common uses of OCR include digitizing printed documents for archival purposes, converting scanned books into editable text, extracting information from business cards, automating data entry tasks, and enabling full-text searches within large document repositories.
How accurate is OCR?
OCR accuracy depends on several factors, including the quality of the original document, the clarity of the text, and the complexity of the layout. Modern OCR tools boast high accuracy rates, often exceeding 95%, but some documents may still require manual review and correction.