1. History

    Early optical character recognition may be traced to technologies involving telegraphy and creating reading devices … 展开

    Optical character recognition | Wikipedia

    • Optical character recognition or optical character reader (OCR) is the electronic or mechanical conversion of images of typed, handwritten or printed text into machine-encoded text, whether from a scanned document, a photo of a document, a scene photo (for example the text on signs and billboards in a landscape photo) or from subtitle text superimpos… 展开

    Applications

    OCR engines have been developed into software applications specializing in various subjects such as receipts, invoices, checks, and legal billing documents.
    The software can be used for:
    • … 展开

    Types

    • Optical character recognition (OCR) – targets typewritten text, one glyph or character at a time.
    • Optical word recognition – targets typewritten text, one word at a time (for languages that use a space展开

    Techniques

    OCR software often pre-processes images to improve the chances of successful recognition. Techniques include:
    • De-skewing – if the document was not aligned properly when scanned, it may need to be tilted … 展开

    Workarounds

    There are several techniques for solving the problem of character recognition by means other than improved OCR algorithms.
    Special fonts like OCR-A, OCR-B, or MICR fonts, with precis… 展开

    Accuracy

    Commissioned by the U.S. Department of Energy (DOE), the Information Science Research Institute (ISRI) had the mission to foster the improvement of automated technologies for understanding machine printed documen… 展开

     
  1. 光學字元辨識 | 维基百科,自由的百科全书

  2. 光學字元辨識 | 維基百科,自由的百科全書

  3. Comparison of optical character recognition software | Wikipedia

  4. Tesseract (software) | Wikipedia

  5. 光学字符识别 | 百度百科

    网页OCR (Optical Character Recognition,光学字符识别)是指 电子设备 (例如 扫描仪 或 数码相机)检查纸上打印的字符,通过检测暗、亮的模式确定其形状,然后用字符识别方法将形状翻译成计算机文字的过程;即,针对 …

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  6. What is OCR (Optical Character Recognition)? | IBM

  7. Optical character recognition | Simple English Wikipedia, the free ...

  8. Optical Character Recognition (OCR): An Introduction

  9. Optical Character Recognition: An Illustrated Guide to …

    网页Optical Character Rcognition: An Illustrated Guide to the Frontier offers a perspective on the performance of current OCR systems by illustrating and explaining actual OCR errors. The pictures and analysis provide insight …

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