FreeImage Library

[c.haslam]

If this is all you need to do, try using Irfanview, a free and excellent image tool. It has a batch mode. The learning curve is reasonable.

I have never had to do what you need to do using FreeImage.

I have written a script that, amongst many other things, runs Irfanview.

Your English is excellent!

[RafaelGioffi]

Hey guys! I'm trying to use a _FreeImage_ConvertToGreyscale function and it's not working. I don't understand why... I'll put the code for the function:

#include <FreeImage_x86x64.au3>

;~ FreeImage
_FreeImage_LoadDLL(@ScriptDir & "\Bin\FreeImage.dll")
_FreeImage_Initialise()

;~ end of initial verification...
GUISetState(@SW_SHOW)

$arquivo = @ScriptDir & "\Captures\img.jpg"
$conv = "img_conv.jpg"

$FIF = _FreeImage_GetFileTypeU($arquivo)
If $FIF = $FIF_UNKNOWN Then
    $FIF = _FreeImage_GetFIFFromFilenameU($arquivo)
EndIf

$hImage = _FreeImage_LoadU($FIF, $arquivo)
$imagem = _FreeImage_ConvertToGreyscale($hImage)
_FreeImage_SaveU($FIF, $imagem, "img_conv")

Note: The FreeImage.au3 file I can't find for download, I only got the FreeImage_x86x64.au3 (I don't know if it's the same thing)

Thanks!