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  1. #1
    Join Date
    Oct 2004
    Location
    Mönchengladbach
    Posts
    252

    Default How to add brightnes noise

    HI all,
    for carpet printing i have to add noise, means some darker and some brighter pixel
    on a solid object.
    my dream woud be a glass transparent layer mit some grey gauss noise, an tell xara
    make the pixel with more than 50% gray darker
    make the pixel wtith less than 50% gray brighter

    any idea how to make this?

    thx
    reinhard
    no sicknature. for nearly 20 years. omg ...
    For many problems there are simple and easy-to-understand solutions that do not work.

  2. #2
    Join Date
    Aug 2000
    Location
    Placitas, New Mexico, USA
    Posts
    41,461

    Default Re: How to add brightnes noise

    You can play around with this texture. I use this for some of my stereogram patterns to add noise/texture.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Gary W. Priester
    Mr. Moderator Emeritus Dude
    , Sir

    gwpriester.com | eyetricks-3d-stereograms.com | eyeTricks on Facebook






  3. #3
    Join Date
    Oct 2004
    Location
    Mönchengladbach
    Posts
    252

    Default Re: How to add brightnes noise

    Im sorry,
    Xara can exatly do what i want.
    id did use a grey noise pattern made in PS
    and than transparent soft light, with 50% transparency.

    perfect!

    (like always)

    r-)
    no sicknature. for nearly 20 years. omg ...
    For many problems there are simple and easy-to-understand solutions that do not work.

  4. #4
    Join Date
    Feb 2007
    Location
    UK
    Posts
    21,242

    Default Re: How to add brightnes noise

    you can make noise patterns in xara

    in fact xara has a live effect function for this, that works at least up to version 15.1

    but in my designer pro version 19 it crashes and I don't know if live effects are present in pro+, they were not when it was launched....
    -------------------------------
    Nothing lasts forever...

  5. #5
    Join Date
    Apr 2012
    Location
    SW England
    Posts
    17,650

    Lightbulb Re: How to add brightnes noise

    Reinhard, here is an SVG and CSS approach that allows the type of noise to be varied: SVG - Carpet Overlay Filter.xar.

    There is a lot happening:
    • The red box is an SVG filter with an ID to allow it to be used elsewhere.
    • The translucent box (overlay) has a ClassName (htmlclass-"noise") to turns anything into a noisy overlay. The CSS for this is in the Website Head.
    • In Xara, you can change the transparency.
    • In CSS, you can adjust the filter effect and include other filter actions.
    • In SVG, you can change the pitch and roughness of the noise.

    For simple noise in Xara just use one or more Soft-Grouped overlays with Fractal Cloud Transparency at differing pitches, orientation and colours.

    The SVG/CSS approach is effectively post-production so you could dynamically alter the values to create interesting animations, good for grass, probably not for carpets.

    Acorn
    Acorn - installed & active Xara software: Cloud+/Pro+, XDPXv18 , XWDPv12/v15, XPGDv10, X3D7, Xara Xtreme 5, and others back through time (to CC's Artworks).
    Technical remediation and consultancy for your web designs. TG Nuggets you might like. Report faults: Xara Cloud+/Pro+/Magix Legacy; Xara KB & Chat

  6. #6
    Join Date
    Feb 2007
    Location
    UK
    Posts
    21,242

    Default Re: How to add brightnes noise

    ..probably not for carpets...
    unless you had 1001 nights to spare....
    -------------------------------
    Nothing lasts forever...

 

 

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