Save images in table

Hi all

I know this has been asked before, and I read a lot of solutions, so I added a bit of detail to clarify the question...

LabVIEW 2013 SP1

Vision Assistant 2013 SP1

PCIe-1433 camera link Frame Grabber

Camera link, 280 fps

I had an application that read images from the PCIe-1433, using the buffer 1.

I called IMAQ acquired copy VI buffer to copy the image in the buffer zone, and then I would put that image on the disk.

That worked well, but access to the drive could slow down after a few seconds.

So, with a little help from support NOR, I went to use the (example HE Ring) several buffers.

Now I do not call the "IMAQ acquired copy buffer" VI, I call the VI "IMAQ extracted buffer" to get the images in the input buffer.

But, since I am not copying the buffer to the 'image workspace"(IMAQ Create), I now only have a reference to the image.

Is there an another VI, or otherwise, to get the actual image so that I can store?

At the moment we are going to capture thousands of images for further processing, so I don't really want to create thousands of buffers at installation time to save all images (as other examples have illustrated).

I hope it's clear.

Any thoughts?

Thank you

Jeff

Hi all

I discussed this with Earl to Technical Support, OR it was very useful.

Apparently, when I capture an image buffer, I get a reference to the location of buffer (I knew that).

When I was passed the image to the VI 'Write a binary file', this tool was the reference to the image (copy the pixels of the image to the binary file).  (apparently not documented where I could find)

However, when I replaced the VI "To write a binary file" with "Insert to matrix" VI, LabVIEW does not dereference the pointer and stores the reference.

And, there seems to be no tool "Derefrence this pointer.

So, what we come with...

After the capture of the image of the buffer, am I on the 'Image' (pointer) VI "Image of copy to the table."

It gives me a table 2D containing actual pixels of the image and NOT a reference.

Can I save that image data in my table.

After I capture all my images, the loop ends, I loop in the table, read the 2D array and pass it to the VI "Arry copy image" to retrieve the image.

I then write the image in the binary file for custody.

In doing so, other applications of utilitiy that already exist as follows in the binary file must be compatible with the file that is created.

Thanks for all the ideas and thoughts.

Jeff

Tags: NI Hardware

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