Released: Aug 25, 2020
v21 での更新項目
機能
New in the LEADTOOLS Recognition Engine
-
New Document Analyzer SDK
-
The Document Analyzer SDK intelligently and automatically extracts data from text-based 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 (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 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 Office formats.
- Enhanced SVG text rendering and extraction.
- Optimize speed and memory usage for all document formats: DOC, DOCX, XLS, XLSX, PPT, and PPTX.
-
DOC/DOCX
- 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.
-
XLS/XLSX
- 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.