Understanding OCR accuracy

- and why classic OCR alone is no longer enough

Text recognition (OCR) is not a new technology – but in times when data quality and automation determine efficiency and competitiveness, a key question arises: Is traditional OCR still sufficient? And how can OCR accuracy be improved to minimise manual rework?

In this article, we take a look at what OCR accuracy really means, which factors influence quality, how it is measured, how it can be specifically improved – and how modern IDP solutions such as DocBits help to go far beyond the possibilities of classic OCR.

What does ‘OCR accuracy’ actually mean?

OCR accuracy describes how accurately text is recognised from an image or scan – for example from an invoice, a form or a copy of a delivery note. A high degree of accuracy reduces manual corrections, lowers process costs and creates confidence in automation.

But beware: not every OCR system is equally accurate. Factors such as document quality, font, layout complexity or language can strongly influence the recognition rate.

How do you measure OCR accuracy?

OCR accuracy can be measured using clear key figures:

  • Character error rate (CER): How many individual characters were recognised correctly?
  • Word error rate (WER): How many whole words were recognised correctly?
  • Line error rate (LER): How many complete lines were recognised without errors?


These metrics help to objectively compare OCR systems – provided that the test conditions are identical.

Common misconceptions about OCR accuracy

Some misconceptions persist:

‘OCR works equally well on all documents.’ Wrong. Poor scans, unusual layouts or handwriting can severely impair recognition.

‘Modern OCR automatically recognises everything correctly.’ Only systems with AI training on company-specific data deliver reliable results.

‘OCR is no longer improving.’ On the contrary – adaptive systems such as DocBits improve with every document captured.

DocBits: More than classic OCR - intelligent document processing (IDP)

DocBits is our AI-based IDP solution that goes far beyond classic OCR. It not only recognises content, but also understands it in context. Using machine learning, DocBits adapts flexibly to different document types and layouts – without any rigid templates.

This means for your company:

  • High OCR accuracy even with difficult documents (e.g. shadows, creases, handwriting)
  • Learning models that are trained on your real data
  • Automatic adaptation to layout changes or new formats

DocBits solves typical OCR challenges

Challenge DocBits solution
Different layouts & formats
AI-based field recognition, independent of document structure
Handwriting or complex fonts
Combination of OCR and NLP incl. handwriting recognition
Multilingual documents
Support for different languages & country formats
High volumes
Cloud-native architecture that scales flexibly – even during seasonal peaks

Improvable OCR? Yes, with the right approach

DocBits uses feedback loops, continuous training and the integration of user feedback to constantly increase the recognition rate. This makes the system more accurate and reliable with every input – without additional effort for your teams.

Develop it yourself - or would you rather rely on DocBits?

Building your own OCR solution sounds tempting – but it requires considerable IT expertise, resources and long-term maintenance. DocBits offers a clear benefit here:

✅ Can be used immediately

✅ Can be integrated into existing systems (ERP, DMS, workflows)

✅ Can be customised to your documents

✅ GDPR-compliant & secure

Conclusion: OCR accuracy determines the success or failure of your automation

If you want to process documents automatically, you need more than just an ‘OCR box’ – you need an intelligent solution that thinks for you. DocBits not only delivers measurably high accuracy, but also a flexible, scalable and adaptive platform for your document processes.

Curious to see how well DocBits works with your documents?

👉 Let’s test together how high the recognition accuracy is for your invoices, delivery notes or forms. Contact us for a customised demo!



So don't wait and get in touch with us or book a free demo!

OCR

Image credits: Header- & featured image by freepik

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