Plugin Suggestion: Color converter to 8-Bit

[pauliux00]

A Plugin that converts pixels in an image to 8 bit color.

 

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

Example:

 

It could be a useful tool for the old-school painters.

 

8 bits of color: 

Paint.NET Palette of 8-Bit colors

Edited January 1, 2014 by pauliux00

[TechnoRobbo]

Your palette has has 257 colors. That being said a color quantitization routine can force-fit any size palette. Let me clean my snow and I'll post a custom plugin.

[Ego Eram Reputo]

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.

[midora]

>> 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).

[TechnoRobbo]

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.

 

 

 

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 August 11, 2015 by TechnoRobbo

[BoltBait]

I haven't figured out how to read the current palette.

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

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

[TechnoRobbo]

 

 

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 January 2, 2014 by TechnoRobbo

[TechnoRobbo]

BoltBait 

 

Thanks for the information but the WorkSpace/CurrentPalette is not 3.5 compatible but it works great with 4.0.

 

I will redirect my efforts into saved Custom palettes.

[Rick Brewster]

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

[TechnoRobbo]

 

 

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 January 2, 2014 by TechnoRobbo