FreeImage Library

[Ashalshaikh]

Good Work

Thank You

[Zedna]

VERY NICE!! 

Thanks for all your work and sharing it ProgAndy.

Five stars from me.

[Hellooopsforgotsendcommand]

VERY NICE!! 

Thanks for all your work and sharing it ProgAndy.

Five stars from me.

Does free image support image tagging?

[ProgAndy]

Does free image support image tagging?

Yes. The functions to manipulate them are descripbed in the helpfile under the topic "Metadata function reference". Thres also some description for the different formats ("FreeImage metadata models").

[WalkHappy]

I need help converting an image to greyscale

#include <FreeImage.au3>

$pDIB = "image01.bmp"

_FreeImage_ConvertToGreyscale($pDIB)

This code doesn't seem to do anything

[WalkHappy]

I need help converting an image to greyscale

#include <FreeImage.au3>

$pDIB = "image01.bmp"

_FreeImage_ConvertToGreyscale($pDIB)

This code doesn't seem to do anything

oh sorry i totally forgot the

_FreeImage_SaveU

_FreeImage_Unload

Ill come back with future questions

[WalkHappy]

I'm not sure which function I should use to remove colors?

Converting to blackandwhite was super easy but I need something that could alter the image more

I was taking a look at these two functions :

FreeImage_SetTransparent

FreeImage_Composite

Could anyone explain exactly what these do? Or please give some examples?

If you've ever used photoshop, this is what I'm trying to edit

Thanks,

Edited December 21, 2009 by WalkHappy

[ProgAndy]

Hello,

I do not really know, what FreeImage_SetTransparent is for. Maybe it is for manipualting GIF/PNG or something like that.

With FreeImage_Composite You can copy an image with transparent parts on an other image or a single colored background.

To create something like this dialog in Photoshop, you have to get the Bitmap-Bits and convert them on your own i think. Then you can set them back. Or maybe a combination of FreeImage_Dither or FreeImage_Threshold with the FreeImage_Adjust...-functions will give you the expected result.

[WalkHappy]

Hello,

I do not really know, what FreeImage_SetTransparent is for. Maybe it is for manipualting GIF/PNG or something like that.

With FreeImage_Composite You can copy an image with transparent parts on an other image or a single colored background.

To create something like this dialog in Photoshop, you have to get the Bitmap-Bits and convert them on your own i think. Then you can set them back. Or maybe a combination of FreeImage_Dither or FreeImage_Threshold with the FreeImage_Adjust...-functions will give you the expected result.

Thank you thank you

Ive been stuck on this for hours.. hopefully it wont lead into days lol

I'll return with results

[obrienj]

ProgAndy,

Nice piece of work but as I am not an image specialist, could you help with a little problem that I think FreeImage can help with.

I have 4 images, one jpeg (call it the base image) and 3 transparent gif images.

I would like to combine the 4 into one by placing all of the gif images over the jpeg and creating a single combined file.

Can FreeImage do this, and if so, could you help a poor old (literally) programmer with an AutoIt example of how to do it.

Regards,

Jim

[ProgAndy]

ProgAndy,

Nice piece of work but as I am not an image specialist, could you help with a little problem that I think FreeImage can help with.

I have 4 images, one jpeg (call it the base image) and 3 transparent gif images.

I would like to combine the 4 into one by placing all of the gif images over the jpeg and creating a single combined file.

Can FreeImage do this, and if so, could you help a poor old (literally) programmer with an AutoIt example of how to do it.

Regards,

Jim

You can do this with FreeImage, but it would be easier with GDIplus. FreeImage forces you to care about Bit-depth and palettes, GDIPlus doesn't. Anyways, this code should work:

$hMainImage = _FreeImage_LoadU($FIF_JPEG, "C:\TheJPEG.jpg", 0)
$hMainImage32bit = _FreeImage_ConvertTo32Bits($hMainImage)
_FreeImage_Unload($hMainImage) ; we have the copy in 32bits

$hGIFImage = _FreeImage_LoadU($FIF_GIF, "C:\aGIF.gif", 0)
$hGIFImage32bit = _FreeImage_ConvertTo32Bits($hMainImage)
_FreeImage_Unload($hGIFImage)  ; we have the copy in 32bits

$iX = 12
$iX = 34
; both images have to be in same format, this is why they were converted.
_FreeImage_Paste($hMainImage32bit, $hGIFImage32bit, $iX, $iY, 300) ; last parameter > 255 for combiing without custom transpareny

_FreeImage_Unload($hGIFImage32bit)  ; now drawn, not needed anymore


_FreeImage_SaveU($FIF_JPEG, $hMainImage32bit, "C:\Combined.jpg", 0)
_FreeImage_Unload($hMainImage32bit) ; we saved it, not needed anymore

[nuki]

hey

thanks for the great udf

but im somehow too dumb to convert a .tga to a .bmp or .bmp to .tga..

is there some kind of convert command that i have missed?

i took your first example as base and tried _FreeImage_ConvertTo32Bits too, but i dont know exactly how to tell the program to convert

just load the .tga and save it as .bmp doesnt seem to work either, it says the bitmap is empty or corrupted

thanks for any help

greets nuki

edit: this is my code:

#include <FreeImage.au3>

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

$sFile = "test.tga"


$FIF = _FreeImage_GetFileTypeU($sFile)
If $FIF = $FIF_UNKNOWN Then
    $FIF = _FreeImage_GetFIFFromFilenameU($sFile)
EndIf
$hImage = _FreeImage_LoadU($FIF, $sFile)

$dot = StringInStr($sFile,".",1,-1)
$Name = StringLeft($sFile,$dot-1)
;that one below was wrong
;_FreeImage_SaveU($FIF, $hImage, $Name &"_rsz.bmp")
;0 is the FIF code for BMP, 17 for TGA
_FreeImage_SaveU(0, $hImage, $Name &"_rsz.bmp")
_FreeImage_Unload($hImage)

_FreeImage_DeInitialise()

damn sorry for disturbing, i got it after reading the documentary a 2nd time... its too late already im in bed... the solution for makin it work is commented

thanks again for the great udf, helps me alot!

edit2:

whats wrong with that? autoit crashes. $return[0] returns a valid handle.

$return = DllCall("FreeImage.dll", "ptr", "_FreeImage_LoadU@12", "long", "17", "wstr", "test.tga", "int", "0")
DllCall("FreeImage.dll", "int", "_FreeImage_SaveU@16", "long", "0", "ptr", $return[0], "wstr", "test2.bmp", "int", "0")

thanks for answers, i go to bed now

edit3:

couldnt sleep cuz of it xD

solved now

$open = DllOpen("FreeImage.dll")
$return = DllCall($open, "ptr", "_FreeImage_LoadU@12", "long", "17", "wstr", "test.tga", "int", "0")
DllCall($open, "int", "_FreeImage_SaveU@16", "long", "0", "ptr", $return[0], "wstr", "test2.bmp", "int", "0")
DllClose($open)

finally good night

greets

Edited February 3, 2010 by nuki

[myspacee]

Hello,

start to read documentation (huge, and very well done)

But can't find simple example to how :

- open file (png)

- resize

- save to different format (jpg)

I've directory with many .png, must resize them and save as .jpg.

Can anyone help me to start using this little gem ?

Thank you all for reading,

m.

Edited February 8, 2010 by myspacee

[ProgAndy]

Hello,

start to read documentation (huge, and very well done)

But can't find simple example to how :

- open file (png)

- resize

- save to different format (jpg)

I've directory with many .png, must resize them and save as .jpg.

Can anyone help me to start using this little gem ?

Thank you all for reading,

m.

There is already an example in the first post

The only thing you have to change is this:

$Ext = StringMid($sFile,$dot)
_FreeImage_SaveU($FIF, $hImageResized, $Name &"_rsz"&$Ext)

To use JPEG here, you have to do this:

$Ext = '.jpeg'
_FreeImage_SaveU($FIF_JPEG, $hImageResized, $Name &"_rsz"&$Ext)

Edited February 8, 2010 by ProgAndy

[masc]

There is already an example in the first post

...

To use JPEG here, you have to do this:

$Ext = '.jpeg'
_FreeImage_SaveU($FIF_JPEG, $hImageResized, $Name &"_rsz"&$Ext)

Hi ProgAndy,

I tried your code but all i get is a zero byte jpg image.

Thats the 2 lines I changed in your example from your first post:

$sFile = "test.tga"
...
_FreeImage_SaveU($FIF_JPEG, $hImageResized, $Name &"_rsz.jpg")

I also tried bmp as an input file but the result was the same.

However it works if I convert the targa file into a bmp!

Any help would be highly appreciated.

Have Fun

masc

[ProgAndy]

Sorry, I am not a master of FreeImage. I think you have to convert the image to 24bit or 8bit greyscale to use FIF_JPEG. It does not convert automatically.

Note that some bitmap save plugins have restrictions on the bitmap types they

can save. For example, the JPEG plugin can only save 24 bit and 8 bit greyscale bitmaps

[masc]

Sorry, I am not a master of FreeImage. I think you have to convert the image to 24bit or 8bit greyscale to use FIF_JPEG. It does not convert automatically.

Thanks for the hint, I will try that.

[masc]

Thanks for the hint, I will try that.

Worked fine. Thanks.

[Collus]

Great job！ Thank you ,ProgAndy. I need this UDF NOW ,but the link give wrong address, i can not download it, please check ,thanks

[ProgAndy]

The download works fine (here). Which browser do you use?