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How To: Save Each Image With a Unique Filename#

Question#

How do I save each image as "image_1.png", "image_2.png", and so on in my API?

Solution#

There are many ways to approach this task, but here are two of the easiest:

  • Save the image using itoa() to convert the image number to a string for a unique file name. This might not work on Linux, as itoa() is a non-standard C++ function. 

    char buf[32];
Pylon::String_t imageNumber;
imageNumber = itoa(ptrGrabResult->GetImageNumber(), buf, 10);
Pylon::String_t fileName = "image_" + imageNumber + ".png";
CImagePersistence::Save(ImageFileFormat_Png, fileName, ptrGrabResult);

  • Save the image using sprintf() to convert the image number to a string for a unique file name. This is more portable and will work on Linux, but adds one more line of code. 

    char buf[32];
Pylon::String_t imageNumber;
sprintf(buf, "%d", ptrGrabResult->GetImageNumber());
imageNumber = buf;
Pylon::String_t fileName = "image2_" + imageNumber + ".png";
CImagePersistence::Save(ImageFileFormat_Png, fileName, ptrGrabResult);

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