Write-Pixel.ps1

Function Write-Pixel
{
    param(
            [String] [parameter(mandatory=$true, Valuefrompipeline = $true)] $Path
    )
    Begin
    {
        [void] [System.Reflection.Assembly]::LoadWithPartialName("System.drawing")
        
        # Console Colors and their Hexadecimal values
        $Colors = @{
            'FF000000' =   'Black'         
            'FF000080' =   'DarkBlue'      
            'FF008000' =   'DarkGreen'     
            'FF008080' =   'DarkCyan'      
            'FF800000' =   'DarkRed'       
            'FF800080' =   'DarkMagenta'   
            'FF808000' =   'DarkYellow'    
            'FFC0C0C0' =   'Gray'          
            'FF808080' =   'DarkGray'      
            'FF0000FF' =   'Blue'          
            'FF00FF00' =   'Green'         
            'FF00FFFF' =   'Cyan'          
            'FFFF0000' =   'Red'           
            'FFFF00FF' =   'Magenta'       
            'FFFFFF00' =   'Yellow'         
            'FFFFFFFF' =   'White'                 
        }
        
        # Algorithm to calculate closest Console color (Only 16) to a color of Pixel
        Function Get-ClosetConsoleColor($PixelColor)
        {
            $Differences = Foreach($item in $Colors.Keys)
            {
                ''|select @{n='Color';e={$Item}},@{n='Diff';e={[math]::abs([convert]::ToInt32($Item,16) - [convert]::ToInt32($PixelColor,16))}} 
            }
    
            ($Differences |sort Diff)[0].color
        }
    }
    Process
    {
        Foreach($item in $Path)
        {
            #Convert Image to BitMap            
            $BitMap = [System.Drawing.Bitmap]::FromFile((Get-Item $Item).fullname)

            Foreach($y in (1..($BitMap.Height-1)))
            {
                Foreach($x in (1..($BitMap.Width-1)))
                {
                    $Pixel = $BitMap.GetPixel($X,$Y)        
                    $BackGround = $Colors.Item((Get-ClosetConsoleColor $Pixel.name))

                    Write-Host " " -NoNewline -BackgroundColor $BackGround
                }
                Write-Host "" # Blank write-host to Start the next row
            }
        }        
    
    }
    end
    {
    
    }

}


#"JSnover.png" |Write-Pixel