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Plugin Suggestion: Color converter to 8-Bit


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Save it as a GIF. GIFs have an 8-bit palette ;)

Once saved you can reopen the image and use Save As to change the file format.

Alternatively there is this plugin which allows you to specify the color depth Low Color Filetype.

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>> A handy plugin, that could convert the colors in an image to 8-Bit.

 

Just a remark:

A plugin ist just able to quantize the colors to a given or an optimal set of colors. The bitmap will still be 32bit.

There is no guaranty that saving this bitmap to an 8bit format will keep the colors generated by the plugin.

Typically the 8bit filetype plugins do their own quantization.

A good quantizer is a complex thing because it has to respect the sensitivity of the human eye.

(It's a little bit more than just counting and mapping colors).

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Listen to EER and Midora , this plugin will force-fit any image to an arbitrary palette but it will not reduce the bit count.

 

It can be found under the colors menu

The Plugin 3.5 compatible TRsPaletteMatcher.zip

 

The CodeLab Source

 

The proof of concept image, it's your image - note how the left hand side now matches the right.

 

HFw06Z2.png?raw=1

 

 

Source Code

Hidden Content:
// Submenu: Color
// Name: TR's Palette Matcher
// Title: TR's Palette Matcher- v1.0
// Author: TechnoRobbo
// URL: http://www.technorobbo.com

#region UICode
#endregion


void Render(Surface dst, Surface src, Rectangle rect)
{
    uint[] colorarray={
        0xFF000000,0xFFFFFFFF,0xFF000055,0xFF0000AA,0xFF0000FF,0xFF002400,0xFF002455,0xFF0024AA,
        0xFF0024FF,0xFF004800,0xFF004855,0xFF0048AA,0xFF0048FF,0xFF006C00,0xFF006C55,0xFF006CAA,
        0xFF006CFF,0xFF009000,0xFF009055,0xFF0090AA,0xFF0090FF,0xFF00B400,0xFF00B455,0xFF00B4AA,
        0xFF00B4FF,0xFF00D800,0xFF00D855,0xFF00D8AA,0xFF00D8FF,0xFF00FC00,0xFF00FC55,0xFF00FCAA,
        0xFF00FCFF,0xFF240000,0xFF240055,0xFF2400AA,0xFF2400FF,0xFF242400,0xFF242455,0xFF2424AA,
        0xFF2424FF,0xFF244800,0xFF244855,0xFF2448AA,0xFF2448FF,0xFF246C00,0xFF246C55,0xFF246CAA,
        0xFF246CFF,0xFF249000,0xFF249055,0xFF2490AA,0xFF2490FF,0xFF24B400,0xFF24B455,0xFF24B4AA,
        0xFF24B4FF,0xFF24D800,0xFF24D855,0xFF24D8AA,0xFF24D8FF,0xFF24FC00,0xFF24FC55,0xFF24FCAA,
        0xFF24FCFF,0xFF480000,0xFF480055,0xFF4800AA,0xFF4800FF,0xFF482400,0xFF482455,0xFF4824AA,
        0xFF4824FF,0xFF484800,0xFF484855,0xFF4848AA,0xFF4848FF,0xFF486C00,0xFF486C55,0xFF486CAA,
        0xFF486CFF,0xFF489000,0xFF489055,0xFF4890AA,0xFF4890FF,0xFF48B400,0xFF48B455,0xFF48B4AA,
        0xFF48B4FF,0xFF48D800,0xFF48D855,0xFF48D8AA,0xFF48D8FF,0xFF48FC00,0xFF48FC55,0xFF48FCAA,
        0xFF48FCFF,0xFF6C0000,0xFF6C0055,0xFF6C00AA,0xFF6C00FF,0xFF6C2400,0xFF6C2455,0xFF6C24AA,
        0xFF6C24FF,0xFF6C4800,0xFF6C4855,0xFF6C48AA,0xFF6C48FF,0xFF6C6C00,0xFF6C6C55,0xFF6C6CAA,
        0xFF6C6CFF,0xFF6C9000,0xFF6C9055,0xFF6C90AA,0xFF6C90FF,0xFF6CB400,0xFF6CB455,0xFF6CB4AA,
        0xFF6CB4FF,0xFF6CD800,0xFF6CD855,0xFF6CD8AA,0xFF6CD8FF,0xFF6CFC00,0xFF6CFC55,0xFF6CFCAA,
        0xFF6CFCFF,0xFF900000,0xFF900055,0xFF9000AA,0xFF9000FF,0xFF902400,0xFF902455,0xFF9024AA,
        0xFF9024FF,0xFF904800,0xFF904855,0xFF9048AA,0xFF9048FF,0xFF906C00,0xFF906C55,0xFF906CAA,
        0xFF906CFF,0xFF909000,0xFF909055,0xFF9090AA,0xFF9090FF,0xFF90B400,0xFF90B455,0xFF90B4AA,
        0xFF90B4FF,0xFF90D800,0xFF90D855,0xFF90D8AA,0xFF90D8FF,0xFF90FC00,0xFF90FC55,0xFF90FCAA,
        0xFF90FCFF,0xFFB40000,0xFFB40055,0xFFB400AA,0xFFB400FF,0xFFB42400,0xFFB42455,0xFFB424AA,
        0xFFB424FF,0xFFB44800,0xFFB44855,0xFFB448AA,0xFFB448FF,0xFFB46C00,0xFFB46C55,0xFFB46CAA,
        0xFFB46CFF,0xFFB49000,0xFFB49055,0xFFB490AA,0xFFB490FF,0xFFB4B400,0xFFB4B455,0xFFB4B4AA,
        0xFFB4B4FF,0xFFB4D800,0xFFB4D855,0xFFB4D8AA,0xFFB4D8FF,0xFFB4FC00,0xFFB4FC55,0xFFB4FCAA,
        0xFFB4FCFF,0xFFD80000,0xFFD80055,0xFFD800AA,0xFFD800FF,0xFFD82400,0xFFD82455,0xFFD824AA,
        0xFFD824FF,0xFFD84800,0xFFD84855,0xFFD848AA,0xFFD848FF,0xFFD86C00,0xFFD86C55,0xFFD86CAA,
        0xFFD86CFF,0xFFD89000,0xFFD89055,0xFFD890AA,0xFFD890FF,0xFFD8B400,0xFFD8B455,0xFFD8B4AA,
        0xFFD8B4FF,0xFFD8D800,0xFFD8D855,0xFFD8D8AA,0xFFD8D8FF,0xFFD8FC00,0xFFD8FC55,0xFFD8FCAA,
        0xFFD8FCFF,0xFFFC0000,0xFFFC0055,0xFFFC00AA,0xFFFC00FF,0xFFFC2400,0xFFFC2455,0xFFFC24AA,
        0xFFFC24FF,0xFFFC4800,0xFFFC4855,0xFFFC48AA,0xFFFC48FF,0xFFFC6C00,0xFFFC6C55,0xFFFC6CAA,
        0xFFFC6CFF,0xFFFC9000,0xFFFC9055,0xFFFC90AA,0xFFFC90FF,0xFFFCB400,0xFFFCB455,0xFFFCB4AA,
        0xFFFCB4FF,0xFFFCD800,0xFFFCD855,0xFFFCD8AA,0xFFFCD8FF,0xFFFCFC00,0xFFFCFC55,0xFFFCFCAA,
        0xFFFCFCFF
    };
    
    ColorBgra[] Colorz=new ColorBgra[colorarray.Length];
    for (int i =0;i < Colorz.Length; i++)
    {
        Colorz[i] = ColorBgra.FromUInt32(colorarray[i]);
    }

    for (int y = rect.Top; y < rect.Bottom; y++)
    {
        for (int x = rect.Left; x < rect.Right; x++)
        {
            ColorBgra CP= src[x,y];
            
            double closer = 0;
            int match = 0;
            double val = Math.Sqrt(
                (CP.G- Colorz[0].G) * (CP.G- Colorz[0].G) +
                (CP.B- Colorz[0]. * (CP.B- Colorz[0]. +
                (CP.R - Colorz[0].R) * (CP.R - Colorz[0].R));
                
            for (int i = 0; i < Colorz.Length ;i++)
            {
                double val2 = Math.Sqrt(
                    (CP.G- Colorz[i].G) * (CP.G- Colorz[i].G) +
                    (CP.B- Colorz[i]. * (CP.B- Colorz[i]. +
                    (CP.R - Colorz[i].R) * (CP.R - Colorz[i].R));
                        
                if (val2 < val)
                {
                    val=val2;
                    match=i;
                }
            }
            
            dst[x,y] = Colorz[match];
        }
    }
}

 

I find it amazing how the Pythagorean theorem solves so many problems.

 

I will not publish this as topic because I haven't figured out how to read the current palette. Sure I can load a saved palette but that's not interactive enough. 

Edited by TechnoRobbo

Go out there and be amazing. Have Fun, TR
TRsSig.png?raw=1
Some Pretty Pictures Some Cool Plugins

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The currently loaded palette can be found in the registry here:

Computer\HKEY_CURRENT_USER\Software\Paint.NET\Workspace/CurrentPalette 

Excellent, Thanks BoltBait , any guarantee of being future proof?

Edited by TechnoRobbo

Go out there and be amazing. Have Fun, TR
TRsSig.png?raw=1
Some Pretty Pictures Some Cool Plugins

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It's a very bad idea to load things from Paint.NET's private registry store like that.

Agreed  - I rewrote to load from saved custom palettes

http://forums.getpaint.net/index.php?/topic/27677-trs-custom-palette-matcher-v10/?p=402433

Edited by TechnoRobbo
  • Upvote 1

Go out there and be amazing. Have Fun, TR
TRsSig.png?raw=1
Some Pretty Pictures Some Cool Plugins

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