Colección de características de SDK de LEADTOOLS diseñada para crear aplicaciones de reconocimiento y procesamiento de formularios de extremo a extremo.
Agosto 28, 2020 - 15:01
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The LEADTOOLS Forms SDK is a handpicked collection of LEADTOOLS SDK features designed to build end-to-end forms recognition and processing applications.

LEADTOOLS Forms includes the LEADTOOLS Recognition Toolkit, which powers the text and forms recognition capabilities bundled with this product. It also includes LEADTOOLS Barcode Pro which includes everything developers need to detect, read, and write over 100 different 1D and 2D barcode types such as UPC, EAN, GS1 DataBar, QR Code, PDF417, Data Matrix, and Aztec.

New in the LEADTOOLS Recognition Engine

  • New Document Analyzer SDK
    • The Document Analyzer SDK intelligently and automatically extracts data from text-based Microsoft Office documents (DOC, DOCX, XLS, XLX), PDFs, and document images (JPG, TIFF, PNG PDF) without requiring a structured layout
      • Automatically extracts data from images, documents, mixture of images and documents, and from images within documents.
      • Flawlessly handles various data formats, including tables, text flows, data across multiple lines.
      • Includes predefined rulesets and functions to add custom rulesets to find, collect, and act upon information.
      • Performs deep analysis to ensure that information of interest is not missed.
      • Customizable actions include collect, report, highlight, and redact.
  • New ICR
    • New ICR technology for remarkable unstructured handwritten print and cursive text recognition
      • Support for hand-printed and cursive handwriting.
      • Support for the English character set, including uppercase, lowercase, numerals, punctuation, and symbols.
      • Powerful and automatic preprocessing to handle noisy and low-resolution images.
      • Spelling dictionaries.
      • Process color and bitonal images.
      • Output strings or text-based formats such as PDF, DOCX, and XML.
      • Comprehensive reports for text results:
        • Character size, location, and baseline.
        • Positional attributes, including end of word, end of line, and end of paragraph.
        • Confidence values.
  • Mixed Zone Recognition
    • New mixed mode AutoZone capabilities that combine LEADTOOLS OCR, ICR, and Recognition technologies to automatically detect, recognize, and extract everything within an image.
      • Automatically extract text from images that contain a mix of machine-printed text, handwritten text, MICR, MRZ, OMR, graphics, and table zones.
  • OCR
    • Performs deep analysis to ensure that targeted information is not missed in recognition.
    • Superscript and subscript support.
    • Automatic detection of E13-B and CMC7 MICR zones.
    • Major enhancement to OCR speed, recognition, and accuracy.
    • Detect text in graphics and image zones.
    • Detect MRZ code orientation.
    • Better OCR recognition for images taken by mobile.
    • Detect slope for each word to produce better output.
    • Enhanced mono- and proportional-font recognition.
    • LEAD OCR engine startup optimization.

New in LEADTOOLS Document Engine

Document Framework

  • Document Viewer
    • New Document Viewer Component for Xamarin Forms.
    • Added support to load and play any of LEAD's supported video formats in the .NET and Java Document Viewer (Microsoft Windows only).
    • Client-side PDF rendering enhancements include:
      • Stamp rendering.
      • Memory optimization.
      • Render digital signatures.
      • Switch to service mode based on individual page size or image encoding.
      • Speedup for calRGB/grayscale color space rendering.
    • Customize text in thumbnails.
    • Added support for history (previous/next document).
    • Improved UI responsiveness when viewing documents with many pages.
    • Added custom UI injection and binding support to the high-level ReactJS document viewer control, LEADVIEW.
  • Attachments
    • Added support for general purpose and PDF attachments.
    • Added support for PDF Embedded files and Portfolio.
  • Document Service
    • Added support to load a mix of different annotations formats, including IBM P8/Deja annotations.
  • Hybrid Caching
    • Use rules to mix different cache back ends. For example, smaller items use in-memory cache and large items use a remote cache.

New Document and Image Compare Libraries

  • Compares two documents or pages and intelligently highlights changes, additions, and deletions.
    • Text compare.
    • Bitmap compare.

Document Converter

  • Document Converter optimizations to speed up text extraction.

PDF SDK Updates

  • PDF Loading and Rendering
    • Redesigned PDF loading and rendering to significantly optimize memory usage, load time, and render quality, with smooth zooming and no pixelation.
    • Optimized memory usage, load time, and render quality.
    • Optimized functions that control PDF metadata to be faster.
    • Functionality added to load and render only a portion of a PDF document.
    • Rasterization of documents at 2400 DPI.
    • Added "Enhance Thin Lines" rendering feature to clarify thin lines in the viewer.
  • PDF Portfolio and PDF Attachment
    • Load PDF Portfolio documents.
    • Load portfolio schema.
    • Extract files within PDF Portfolio documents.
    • Load PDF document with embedded attachments.
    • Extract embedded attachments from PDF documents.
  • PDF Redaction Updates
    • Added support for image redaction.
    • Updated text redaction to support text inside Form XObject.
  • Additional PDF Updates
    • Load PDF forms.
    • Enhanced PDF annotations (create, modify, load and save).
    • Enhanced PDF manipulation operations such as PDF merge, insert, and extract pages.
    • Enhanced the PDF Optimizer.
    • Enhanced PDF/A conversion with focus on font handling.

Updates for Microsoft Office Formats

  • Added support to render many chart types, including:
    • Radar.
    • Area.
    • Scattered.
    • Line.
    • Bar.
    • Chart legends.
  • Enhanced support for vector graphics rendering in all Microsoft Office formats.
  • Enhanced SVG text rendering and extraction.
  • Optimize speed and memory usage for all document formats: DOC, DOCX, XLS, XLSX, PPT, and PPTX.
    • Mathematical equation model (OMML) support in DOCX only.
    • Optimized load speed and memory usage.
    • Added support for equation formula calculations.
    • Sections and Drawing-ML shapes.
    • Enhanced support for rendering nested tables.
    • Enhanced text wrapping around text boxes.
    • Optimized speed and memory usage.
    • Faster loading for large sheets.
    • Formula evaluator module to handle all logical operations and calculations for conditional formatting.
    • Table design support.

New in LEADTOOLS Imaging Engine

  • Xamarin Camera
    • Added control of preview size and frame rate.
  • New Image Processing Functions
    • Extract Object - Extracts connected groups of pixels from an image.
    • Canny Edge Detector.
    • Forms Field Detector.
  • Updates to Formats
    • Optimized memory usage for J2K format.
    • Expanded J2K support to include some files that do not follow the specification.
    • Added support to load 8-bit TIFF and PNG files with 8-bit alpha for transparency.
    • Added support for ANSI, UTF7, UTF8, UTF16LE, UTF16BE encoded text files.
    • Added support to load CGM files saved with text encoding.
    • Added support to render Medium Map Overlay for AFP (MODCA) documents.

Additional Changes

  • New powerful Xamarin demos that show more features of LEADTOOLS in a Xamarin development environment. These new demos are designed to look like end-user applications, but the source code for them is included so that anyone can get a head start. Below are some of the new demos included in version 21:
    • Annotations Demo.
    • Barcode Demo.
    • Business Card Reader Demo.
    • Camera Demo.
    • Converter Demo.
    • DICOM Demo.
    • Document Viewer Demo.
    • Image Processing Demo.
    • Live Filter Demo.
    • MICR Demo.
    • OCR Demo.
  • Maven repository for Android.

Changes to the LEADTOOLS Product Line in Version 21

  • The following products have been renamed:
    • LEADTOOLS Document Imaging to LEADTOOLS Document.
    • LEADTOOLS Recognition Imaging to LEADTOOLS Recognition.
    • LEADTOOLS Document Imaging Suite to LEADTOOLS Document Suite.
    • LEADTOOLS Medical Imaging to LEADTOOLS Medical.
    • LEADTOOLS Medical Imaging Suite to LEADTOOLS Medical Suite.
  • The following products have been added.
    • LEADTOOLS Forms - includes all features of the LEADTOOLS Recognition product, including ICR, MICR, MRZ, and OMR, plus forms recognition and processing.
  • The following products have been removed.
    • LEADTOOLS PACS Imaging - functionality moved into the LEADTOOLS Medical product.
    • LEADTOOLS Medical Multimedia Module - functionality moved into the LEADTOOLS Medical product.
    • LEADTOOLS Dental Display Module.
  • The LEADTOOLS Document Suite and the Medical family of products include all features of LEADTOOLS Multimedia.


Cree aplicaciones de reconocimiento y procesamiento de formularios de extremo a extremo.

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