Zone OCR and Dynamic OCR
Many document scanning solutions use Zone OCR to obtain index data from the page, while SimpleIndex improves upon this time-tested but ultimately limited model with its unique Dynamic OCR feature. Let’s look at the difference between the two methods:
Zone OCR is used to read document indexes or tags from text on the page. It is a great way to automate the data entry associated with scanning documents.
However, there are several limitations to zone OCR that must be overcome:
- Index information must be in the exact same place on every page
- Documents shift and skew during scanning, causing the zones to not line up
- If surrounding lines or text on the document are too close, they can encroach on the zone
SimpleIndex overcomes these limitations by using Dynamic OCR technology to locate the desired text even when it moves around on the page. Our simplified version of Dynamic OCR works great for many types of documents at a fraction of the cost of other solutions.
- Index information can appear anywhere on any page
- Unwanted characters are automatically ignored
- Find unique patterns of letters and numbers using Template Matching
(Social Security #, Date, etc.)
- Use Dictionary Matching to find a value from a list of possible values
(Vendor Name, Document Type, etc.)
Dynamic OCR Examples
In the video we see how SimpleIndex approaches a typical Zone OCR example. With SimpleIndex you can use large zones that give a wide margin for error. Template and Dictionary matching are then used to extract the 7-digit Account Number, 6-digit Order Number and Company Name. SimpleIndex discards the surrounding text and keeps the correct value.
Another common example is finding a unique identifier, for example a social security number, that could appear anywhere on the page. Simply enter the template ###-##-#### and SimpleIndex will search the full OCR text until it finds a match. Since only one social security number is likely to appear on the page, a match on this pattern is almost certainly the required value.
With dictionary matching, you can give SimpleIndex a list of possible values and it will automatically search the zone or page for each possible value until it finds a match.
Many dynamic forms processing applications can be implemented using these simple algorithms. This makes SimpleIndex far more versatile than other zone OCR solutions that require the index value to be in the exact same location on every page. Yet SimpleIndex costs only a fraction of the price!
SimpleIndex‘s dynamic forms processing can greatly speed up data entry by eliminating a good percentage of indexing work. For many this can put the labor cost of scanning within their reach.
Dynamic OCR can also be applied to MS Office and PDF files, creating a fully automated process for intelligently indexing and reorganizing electronic documents.
Support for Regular Expressions
SimpleIndex OCR has a simple built-in template format, as well as support for Regular Expressions. Regular Expressions (RegEx for short) let you define complex search patterns to extract matching values from the text. This greatly enhances the functionality of the dynamic OCR in SimpleIndex, making it capable of finding variable-length fields with no distinct pattern.
Regular Expressions are a commonly used in text parsing applications. The Perl programming language makes extensive use of RegEx, as do UNIX utilities like “grep”. Many programmers and IT personnel are already familiar with RegEx and can create complex expressions without specific training.
New OCR Features in Version 9
- OCR language pack now includes all available Tesseract languages including Hindi, Tamil, Arabic, Chinese, Thai, Vietnamese, Japanese, Korean, Indonesian, Hebrew and many more.
New OCR Features in Version 8
Versions 7 and above include the industry leading ABBYY FineReader® OCR engine for dramatically improved OCR accuracy and speed. Other OCR enhancements in version 8+ include:
- Point & Click OCR
- Tesseract OCR Engine now included with all license versions
- Match OCR index fields against other index fields
- Skip OCR processing on imported files that already include text, such as PDF + Text files for faster batch times
How to Configure SimpleIndex OCR
Watch this Simple Software University training video to see how to configure and run an OCR job with SimpleIndex.
KB Articles for Optical Character Recognition (OCR)
- What is Document Imaging?
- Change the Dictionary Separator Value
- Change the OCR Font or Type
- Regular Expression (RegEx) - Syntax or Type
- Autonumber Increment Value
- I'm using full page OCR. The information is all appearing in the txt file but it is losing format about half way through. Data to the right is ending up at the end of the txt doc. Can this be fixed?
- Is there a way to just use part of a bar code or OCR value? For example, extract "50" from the value "124450"
- If I have a form which is filled manually by hand, can SimpleIndex read the data from it?
- How do you train the OCR engine for better accuracy?
- How do you configure full text searching in Retrieval mode?