#@&cls&powershell "type '%~f0'|out-string|iex"&pause&exit
Add-Type -AssemblyName System.Drawing
$cp = New-Object CodeDom.Compiler.CompilerParameters
$cp.ReferencedAssemblies.Add([Reflection.Assembly]::GetAssembly([Drawing.Image]).Location) >$null
$cp.ReferencedAssemblies.Add([Reflection.Assembly]::GetAssembly([Linq.Enumerable]).Location) >$null
$cp.CompilerOptions ='/unsafe'

Add-Type -CompilerParameters $cp -TypeDefinition @'
using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Collections.Generic;
using System.Linq;

public class test
{
    unsafe public static int main(string f)
    {
	Bitmap bitmap = new Bitmap(@f);
	int width = bitmap.Width;
	int height = bitmap.Height;
	int h = height/2;
	BitmapData bitmapData = bitmap.LockBits(new Rectangle(0, h, width, height-h), ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
	byte* p = (byte*)(IntPtr)bitmapData.Scan0;
	Dictionary<int, int> b = new Dictionary<int, int>();
	for (int i = 0; i < width * (height-h) * 4; i+=4)
	{
	    int c = (p[i+3] << 24) | (p[i+2] << 16) | (p[i+1] << 8) | p[i];
            b[c] = b.ContainsKey(c) ? b[c] + 1 : 1;
	}
	bitmap.UnlockBits(bitmapData);
        bitmap.Dispose();
	var d = b.OrderBy(x => x.Value).Select(x => x.Value).ToArray();
	return width*h/(d[d.Length-1]) < 30 ? 1 : 0;
    }
}
'@
mkdir 123
$a=dir *.jpg|%{if([test]::main($_.FullName)){move $_.fullname '123'}}
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