Scan Restoration & Preprocessing: Radon Deskewing, Otsu Binarization & Upscaling
Technical tutorial on restoring degraded scans, faded receipts, skewed contracts, and low-DPI faxes using Radon transforms, adaptive Otsu binarization, and Lanczos-4 interpolation.
Troubleshooting Skewed & Rotated Scans: Automated Deskewing Algorithms Explained
Technical guide on diagnosing and repairing crooked, upside-down, and rotated document scans using Radon projections, Hough transforms, and automated 90-degree quadrant detection.
Handwriting OCR vs Printed Text OCR: What Modern AI Can and Cannot Recognize
Honest engineering analysis of the capabilities and boundaries of modern Optical Character Recognition (OCR) versus Handwritten Text Recognition (HTR).
Resolving Font Recognition Errors, Ligatures & Special Unicode Characters
Technical guide on diagnosing typographic ligatures ('fi', 'fl'), diacritics, mathematical symbols, and Unicode normalization errors in OCR text outputs.
How to Reduce Scanned PDF File Size Without Sacrificing OCR Text Searchability
Engineering guide on shrinking bloated 50MB scanned PDFs down to manageable 3MB files using JBIG2 compression, image re-quantization, and lossless text stream preservation.
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