How to get image dimension of floating point and 32bit images? [SOLVED]

[jmon 6]

Hi everyone,

How to get the image dimension of 32 bits and floating point images?

this returns weird values , like 4294967295 for the width and 0 for height :

#Include <GDIPlus.au3>

$theFile = "C:\Image.tga"

_GDIPlus_Startup()
$hImage = _GDIPlus_ImageLoadFromFile ( $theFile )
$iWidth = _GDIPlus_ImageGetWidth ( $hImage )
$iHeight = _GDIPlus_ImageGetHeight ( $hImage )
_GDIPlus_ImageDispose ( $hImage )
_GDIPlus_Shutdown()

ConsoleWrite ( "Image Dimensions = " & $iWidth " * " & $iHeight & @CRLF )

Same issue with Targa (.tga) images 32bits.

Open EXR Sample images : Sample Images for download

[EDIT1]

Just wanted to add that this doesn't work either :

[EDIT2]

Solved using freeimage.

Edited August 24, 2012 by jmon

[jmon 6]

OK,

I found the solution:

Using the function _FreeImage_GetWidth and GetHeight, freeimage supports also HDR files and many other kind of image types.

Thanks everyone.

[UEZ 972]

Exr image format is not supported by GDI+ and that's the reason why you get strange values.

$hImage = _GDIPlus_ImageLoadFromFile ( $theFile )
If @error Then Exit MsgBox(16, "ERROR", "File couldn't be loaded")

should help to see whether image format is supported or not.

Br,

UEZ

[jmon 6]

Yes, I tried already, and _GDIPlus_ImageGetType returns -1 on EXR files. I think -1 is $GDIP_IMAGETYPE_UNKNOWN

But I am still open for other alternatives to freeImage, because I find it a bit slow compared to the speed of GDIPlus on jpg images.