Quality degradation of the scan in background
  • MartinCail
    junior Member
    Posts: 1
    Joined: Fri Dec 11, 2020 10:32 am

    Quality degradation of the scan in background

    by MartinCail » Fri Dec 11, 2020 10:42 am

    Dear all,
    I have a problem with my scans on MadMapper (4.0.4).
    I can scan without any problem, and it creates a PNG file, in quite good quality (enough to work on it). But when it is in "Background", in my workspace, the quality is way lower. The is a lot more of "dead pixels" (PNG fils and screenshot of my Madmapper in attachment).
    Is it normal ?
    Do I have solutions to keep the quality of the PNG ?
    Thank's a lot !
    Attachments
    Capture d’écran 2020-12-10 à 14.47.50-min.png
    Capture d’écran 2020-12-10 à 14.47.50-min.png (752.94 KiB) Viewed 1403 times
    chambre madmapper.png
    chambre madmapper.png (532.65 KiB) Viewed 1403 times
  • mad-matt
    garageCube team
    Posts: 1475
    Joined: Mon Sep 09, 2013 5:50 pm

    Re: Quality degradation of the scan in background

    by mad-matt » Mon Jan 04, 2021 5:21 pm

    That's an aliasing issue. If you zoom in you'll see all pixels.
    MadMapper sets the pixel black where the photo camera pixel does not exactly match a projector pixel. There are tricks to clean the image in photoshop, I remember I saw a youtube video showing how. We should experiment some algorithmic to fill those gaps and get a cleaner image.

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