[HN Gopher] Otary now includes 17 image binarization methods
       ___________________________________________________________________
        
       Otary now includes 17 image binarization methods
        
       Author : poupeaua
       Score  : 13 points
       Date   : 2025-10-07 13:59 UTC (4 days ago)
        
 (HTM) web link (alexandrepoupeau.com)
 (TXT) w3m dump (alexandrepoupeau.com)
        
       | poupeaua wrote:
       | Otary gets even smarter with the addition of 17 binarization
       | methods now available!
       | 
       | I am thrilled to share a new update to Otary, my open-source
       | Python library dedicated to image manipulation and 2D geometry
       | processing.
       | 
       | Otary now includes 17 binarization methods, designed to make
       | experimentation both simple for beginners and powerful for
       | advanced users.
       | 
       | 5 basic methods: easily accessible for quick and efficient use:
       | simple, otsu, adaptive, bradley, and sauvola.
       | 
       | These methods are the most classic and effective, perfect for new
       | users and for 90% of practical cases.
       | 
       | 12 advanced methods: for users who want to explore, compare, and
       | understand more sophisticated approaches. They are intended for
       | image processing specialists and researchers who want to
       | experiment with new ideas.
       | 
       | The documentation presents a summary table of the 17 methods,
       | classified by year of publication and accompanied by links to the
       | original scientific articles.
        
         | 01HNNWZ0MV43FF wrote:
         | What is binarization used for? Scanning QR codes?
        
           | versteegen wrote:
           | In particular for converting scanned documents to black and
           | white. Though you can get nicer results with grayscale.
           | 
           | This library might have saved me a lot of time recently, as I
           | don't have a working scanner and was forced to photograph and
           | clean up a lot of pages of documents. I used gimp, which
           | required a lot of experimentation. It's only got a couple
           | tools that can do the job with uneven lighting, but they
           | sometimes require some pre or post processing for good
           | results.
        
       | walpurginacht wrote:
       | Love this, gonna take a look when I get home for some weekend
       | hacking
       | 
       | in your experience, which binarization (adaptive or otherwise) do
       | you often practically use?
        
       | yodon wrote:
       | Consider including images showing the impact of the various
       | methods.
        
       ___________________________________________________________________
       (page generated 2025-10-11 23:01 UTC)