Image enhancement with the iOS Document Scanner SDK
Introduction
Documents captured with mobile devices often suffer from warping or perspective distortion, especially when photographed at an angle, on uneven surfaces, or when physically deformed (e.g. folded or crumpled). These issues reduce readability and negatively impact OCR accuracy. The Scanbot Document Scanner SDK provides Image Enhancement (Document dewarping) to correct such distortions, producing flat, high-quality images optimized for OCR and data extraction. This helps deliver professional scanning experiences, improves processing reliability, and is especially important in industries like finance, healthcare, logistics, and government where document quality is critical.
Usage
Image enhancement is available across multiple integration points in the Scanbot SDK, allowing flexibility depending on your workflow. You can use it:
- As part of the Ready-to-Use (RTU) Document Scanner UI for automatic processing during capture
- On individual scanned pages for manual or selective post-processing
- Via the Document API for full programmatic control and custom pipelines
Usage in the RTU-UI Document Scanner
The Image Enhancer can be configured in the RTU-UI Document Scanner.
By default, the captured document pages are automatically enhanced/dewarped. The result includes the enhancement parameters applied to the page. When disabled, the images are returned without processing, preserving default behavior.
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Usage in Scanned Page
Image enhancement can be applied at the scanned page level for more control.
- Apply enhancement after capture
- Re-process existing pages
- Keep original and processed versions
This allows flexible integration into custom review and editing workflows.
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Usage of Document Enhancer API directly on an image
The Document Enhancer API can be used directly on any image, providing full control over the enhancement process.
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A mobile scan is just the start. With Apryse SDKs, you can expand mobile workflows into full cross‑platform document processing. Whether you need to edit PDFs, add secure digital signatures, or use a fast, customizable document viewer and editor, Apryse gives you the tools to build powerful features quickly.
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