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Xhin

Remove Black

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Adjustments > Remove Black

 

This is a simple little plugin that turns black pixels into transparent pixels, then turns other pixels into alpha versions of themselves depending on their darkness so the effect is smoother.

 

I apologize if this exists elsewhere -- the code is really really simple so I bet someone else has run across it. I doubt they have my threshold slider though.

 

dGsrk2O.png

  • Threshold -- changes the amount of pixels that get alpha adjustments applied to them. Lower settings will have more of the image turning into alpha, higher settings will have smaller amounts.

 

Let's take a look at the plugin:

 

X5MVY0B.png

 

I've chosen this as my base image -- there is color here, but also a lot of darker pixels.

 

A0DhhGs.png

 

On the layer underneath it, I have a circular rainbow texture I made with my Radial Prism plugin.

 

dZOLLS4.png

 

Here's what your default settings look like. This essentially replaces the black pixels with the rainbow pixels in the layer underneath it in  a smooth way.

 

l8VqoBO.png

 

This has threshold set to 1 -- this tends to be the most intuitive use of the plugin, but also the least useful in my experience.

 

MPXN6Da.png

 

Here's a higher threshold. Now the rainbow has essentially become an outline.

 

Some tips for use

I've been using this plugin for years despite not releasing it until today. Here's a couple things I've noticed:

 

  • Putting a radial prism on the layer below an image works pretty fantastic across the board -- this forms the basis of my "pure color" technique where the image becomes nothing but color.
  • If you use a Drop shadow when the plugin is set to a low threshold, you get some really good tinting effects. If you use black instead of a color you can smoothly append the underlayer, or if you have the image itself underneath it this is a great way of adding extra shadow without messing up the detail. I have an upcoming recoloring tutorial that uses this technique.

 

Here's are a couple snippets where I've used the plugin to good effect with these techniques:

 

zMvZfc2.png

mbO9n0I.png

 

Download Link

https://github.com/Xhin23/Paint.net-Plugins/blob/master/Remove_Black.dll

Edited by Xhin
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Those spirals really mess with your brain - those susceptible to motion sickness should not stare too long, particularly at the first image. 

 

Nice effect although I'd want to do something to clean up the black pixels around the edges of the spirals.

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On 10/1/2019 at 1:13 AM, Xhin said:

You think those are bad, check out this album of my art:

 

https://www.facebook.com/pg/artluvultra/photos/?tab=album&album_id=740640276030710

 

Nice but also visually disturbing to people susceptible to those sorts of repetitive patterns. I'm not but I've known people who can feel dizzy, get nauseous or even bring on migraines looking at patterns like those.

 

Edited by IHaveNoName

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Thank you @Xhin!  <3

 

I can see some very interesting backgrounds emerging from this plugin. Duplicate the layer and change the blending mode is all you need do and you get lots of different effects.

 

removeblack_01.png

 

removeblack_01_diff.png

 

Keep up the great work...I appreciate it!  :D

 

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