save a cbyteimage with opencv as tiff

[Nobody/Anonymous]

Hello,

I'm trying to save an edited Image with opencv as an tiff file.
Here my sample code:

void FileHelper::saveAsTiff(CByteImage *image, string filename){
    string file;
    IplImage* imageToSave;
    file.append("/images/");
    file.append(filename);
    imageToSave =  IplImageAdaptor::Adapt(image,false);
    cvSaveImage(file.c_str(),imageToSave);
}

Now my problem is, the file will be created but the color is wrong. It's in blue…

What's wrong with my sample?

Thanks for any help :)

[Pedram Azad]

Hi,

that is a known issue of OpenCV, it often uses BGR instead of RGB.

You have to switch the B and R. You can copy code from IVT/Image/ImageAccessCV.cpp, which does exactly the same for loading an image with the aid of OpenCV. I'll add ImageAccessCV::SaveToFile in the next version.

Pedram

[Pedram Azad]

Hi,

take a look at the new version 1.3.9 of the IVT. I added the function ImageAccessCV::SaveToFile and also updated the example application IVT/examples/SimpleAppCV (resp. IVT/win32/SimpleAppCV) to show the use of ImageAccessCV::LoadFromFile and ImageAccessCV::SaveToFile.

Pedram

[Nobody/Anonymous]

Hi,

I've tried this new version of IVT.
I used this code here:

//store image as tiff
void FileHelper::saveAsTiff(CByteImage *image, string filename){
    string file;
    file.append("/images/");
    file.append(filename);
    if(!ImageAccessCV::SaveToFile(image,file.c_str())){
//        printf("Fehler: konnte Bild (%s) nicht speichern \n",file.c_str());
    }
}

The image wil be saved but it's return the message "segmentation failure".

I read in the code, this is a message from OpenCV.  How I can prevent this error?
I saw in the new function code that the error message of the new function has the wrong message.

printf("error: CByteImage::eRGB24Split not supported by ImageAccessCV::LoadFromFile\n");

should be:

printf("error: CByteImage::eRGB24Split not supported by ImageAccessCV::SaveToFile\n");

Thanks for your help :)