Retrieve Pixel's color of a Picture file

[Dieuz 0]

Hi there,

Let say I have a picture file named "image.gif" wich is 50x50 px in a folder.

How could I retrieve the color of each of these pixels and store them in an array?

Thanks!

[Dieuz 0]

I found this: http://www.autoitscript.com/forum/index.php?showtopic=100457&st=0&p=718522&hl=picture%20file%20pixel%20color&fromsearch=1&#entry718522

I will try it out!

[iamtheky 927]

heres a quick and dirty 1D Array.

#include <GUIConstants.au3>
#Include <Array.au3>


splashimageon ("" , "watersmall.jpg" , 50 , 50 , 0 , 0 , 1)

Dim $Array[1]

$K = 1
For $B = 0 to 50
$color = pixelgetcolor ($B , $K)
;~ msgbox (0, '' , $color)
$Add = _ArrayAdd ($Array, $color)

If $K = 51 Then
    ExitLoop
    Endif

If $B = 50 Then
    $K = $K + 1
    $B = 0
    Endif

Next

_arraydelete($Array, 0)
_arraydelete($Array, $Add)
_arraydisplay($Array)


splashoff()

exit

[Malkey 231]

Try this.

Run script, and press left mouse button.

Press Esc to exit.

Drag any window over and off the desktop to act as an eraser.

expandcollapse popup

#include <GUIConstants.au3>
#include <Array.au3>
#include <Misc.au3>

;======== load image into array ==============
SplashImageOn("", RegRead("HKEY_LOCAL_MACHINE\SOFTWARE\AutoIt v3\AutoIt", "InstallDir") & _
        "\Examples\GUI\merlin.gif", 50, 50, 0, 0, 1)

Dim $Array[50][50]

For $B = 0 To UBound($Array, 1) - 1
    For $C = 0 To UBound($Array, 2) - 1
        $Array[$B][$C] = "0x" & Hex(PixelGetColor($B + 1, $C + 1), 6)
    Next
Next

_ArrayDisplay($Array)
SplashOff()

;========= Draw array of pixels to desktop at mouse button down ===============
Local $aMPos, $dc

While 1
    Select
        Case _IsPressed("1B") ; Esc to exit
            ExitLoop
        Case _IsPressed("01") ; Left mouse button
            $aMPos = MouseGetPos()
            Local $dc = DllCall("user32.dll", "int", "GetDC", "hwnd", 0)
            For $B = 0 To UBound($Array, 1) - 1
                For $C = 0 To UBound($Array, 2) - 1
                    DllCall("gdi32.dll", "long", "SetPixel", "long", $dc[0], "long", $B + $aMPos[0], "long", $C + $aMPos[1], "long", _
                            "0x" & StringRegExpReplace(Hex($Array[$B][$C], 6), "(..)(..)(..)", "\3\2\1")) ; Change to 0xBBGGRR hex colour format.
                    ;_PixelSetColor($B + $aMPos[0], $C + $aMPos[1], $Array[$B][$C])
                Next
            Next
            DllCall("user32.dll", "int", "ReleaseDC", "hwnd", 0, "hwnd", $dc[0])
    EndSelect
WEnd

; Modified from http://www.autoitscript.com/forum/index.php?showtopic=7315&view=findpost&p=178779
Func _PixelSetColor($XCoord, $YCoord, $Color)
    Local $dc = DllCall("user32.dll", "int", "GetDC", "hwnd", 0)
    If Not IsArray($dc) Then Return -1
    DllCall("gdi32.dll", "long", "SetPixel", "long", $dc[0], "long", $XCoord, "long", $YCoord, "long", _
            "0x" & StringRegExpReplace(hex($Color,6), "(..)(..)(..)", "\3\2\1")) ; Change to 0xBBGGRR hex colour format.
    DllCall("user32.dll", "int", "ReleaseDC", "hwnd", 0, "hwnd", $dc[0])
EndFunc ;==>_PixelSetColor

[Carlo84 2]

Try this.

Run script, and press left mouse button.

Press Esc to exit.

Drag any window over and off the desktop to act as an eraser.

Heh great i whas just browsing google out of boredom and stumbled onto this

I ended up making this with your example http://imvu-products.biz/portrait.htm

Needs a few more tweaks shall post it when its done.

thanks