Keyframing trouble, Purple flash on PNG file

Question

Ive been keyframing a PNG file and seem to be getting purple flashes at some point during editing. I tried rendering it and still flickers sometimes.. Help???

Answer 1

I don't know about the innards of the READ PNG FILE vi, but it's possible there is wastage in copying and resizing internal buffers.
      That is what i was thinking too, it's a shame i cant view the inner workings and create a similar VI with a smaller data type output specifically for 1-bit color depth files, and also try to minimize the number of copies in memory.
Though I would expect it to know that at the start and not waste time trying.
In any case, if you can read the file piecemeal (you'll have to know the PNG spec for that), then you can count them.
     That was my next step if i cant manage to get it working with more RAM and the built-in Read PNG File.vi.  This would also take considerably more time as i would have to learn the PNG spec and write somethign to read it 
     from scratch
Or maybe you can use an estimate? Open it in PicViewer and take a snapshot, then count the pixels in that and scale it up.
     Unfortunately I cant use an estimate.  The reason we are using such a high resolution is that we are trying to very accurately measure the area of the black pads on this print.  The reason we thought this might be a viable method is
      that this scanner can output up to 19200 dpi resolution, allowing us to measure down to ~50 um per pixel.