topic Re: Integration with Image component in Visual C++ in Intel® Integrated Performance Primitives

Integration with Image component in Visual C++

jmparrot — Mon, 29 Sep 2008 15:34:43 GMT

Hello,

I'm having difficultiesin usingimage IPPfunctions with images loaded by using .NET CLR JPG loading.
Say, by using Image^ FromFile (String^ filename) to load and show them in the form.
I know thatthey are32 bits per pixelin ARGB structure, but I have no success in passing them as arguments to IPP functions.

Are there sample codes whith images read in such way, passed to IPP functions?
Pardon me for so basic question, but unfortunately I'm not able to see the answer...

Thanks in advance for any hint...
Jose

Re: Integration with Image component in Visual C++

Albert_Stepanov — Tue, 30 Sep 2008 10:30:39 GMT

Quoting - jmparrot

Hello,
I'm having difficultiesin usingimage IPPfunctions with images loaded by using .NET CLR JPG loading.
Say, by using Image^ FromFile (String^ filename) to load and show them in the form.
I know thatthey are32 bits per pixelin ARGB structure, but I have no success in passing them as arguments to IPP functions.
Are there sample codes whith images read in such way, passed to IPP functions?
Pardon me for so basic question, but unfortunately I'm not able to see the answer...
Thanks in advance for any hint...
Jose

Hi Jose,

I think you should use the Bitmap and BitmapData classes for operation with IPP functions. For example so:

Bitmap^ img =

dynamic_cast(Image::FromFile(filename));

switch( bmpData->PixelFormat ) {

caseSystem::Drawing::Imaging::PixelFormat::Format8bppIndexed:

ippiMirror_8u_C1IR(pSrcDst, bmpData->Stride, roi, ippAxsBoth);

break;

case System::Drawing::Imaging::PixelFormat::Format24bppRgb:

ippiMirror_8u_C3IR(pSrcDst, bmpData->Stride, roi, ippAxsBoth);

break;

case System::Drawing::Imaging::PixelFormat::Format32bppArgb:

ippiMirror_8u_C4IR(pSrcDst, bmpData->Stride, roi, ippAxsBoth);

break;

default:

break;

}

img->UnlockBits(bmpData);

I hope this help you.

Albert

Re: Integration with Image component in Visual C++

Albert_Stepanov — Tue, 30 Sep 2008 10:53:00 GMT

Excuse me for the bad format.

Again:

Bitmap^ img = dynamic_cast

Rectangle rect = Rectangle(0, 0, img->Width, img->Height);

System::Drawing::Imaging::BitmapData^ bmpData =

img->LockBits(rect, System::Drawing::Imaging::ImageLock<:READWRITE>PixelFormat);

Ipp8u* pSrcDst = (Ipp8u*)((bmpData->Scan0).ToPointer());

IppiSize roi = {img->Width, img->Height};

switch( bmpData->PixelFormat ) {

case System::Drawing::Imaging::PixelFormat::Format8bppIndexed:

ippiMirror_8u_C1IR(pSrcDst, bmpData->Stride, roi, ippAxsBoth);

break;

case System::Drawing::Imaging::PixelFormat::Format24bppRgb:

ippiMirror_8u_C3IR(pSrcDst, bmpData->Stride, roi, ippAxsBoth);

break;

case System::Drawing::Imaging::PixelFormat::Format32bppArgb:

ippiMirror_8u_C4IR(pSrcDst, bmpData->Stride, roi, ippAxsBoth);

break;

default:

break;

}

img->UnlockBits(bmpData);

Albert

Re: Integration with Image component in Visual C++

jmparrot — Tue, 30 Sep 2008 13:53:24 GMT

Hi, Albert,

Thanks a lot for your answer.Seems it solves what I have trouble with...

I'll tryadapt your codeto myimage deconvolution application, andinform you ontheresults.

No problem with the previouscommentformat, it isa normalcut&paste susprise!

Jose

Re: Integration with Image component in Visual C++

Albert_Stepanov — Wed, 01 Oct 2008 06:25:50 GMT

Hi, Jose!

Wish to hear good news from you. If anything you think I can help you, plese feal free to tell me.

Regards,

Albert