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dispossessed

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  1. Antoine, I tried your vi, but still no luck. i couldnt get more than 11fps. however, i did a speed test to my HD and found out that it is runing at a speed of 32MB/sec. this is much less than what is supposed to be doing (320MB/sec), but it should still be enough for my requirements.
  2. QUOTE (Antoine @ Jul 3 2008, 04:24 AM) Thanks a lot. i will try it today and inform you if it works or not. i hope it does! and thanks for the links above.
  3. QUOTE (Antoine @ Jul 3 2008, 02:28 AM) i already posted the code above. please take a look at it and hopefully you might spot a glitch by queing, you mean indexing the tunnel at the loop exit? if so, ive tried something similar, but still no success. Thanks.
  4. QUOTE (crelf @ Jul 2 2008, 09:14 PM) yes, but 16MB is not enough space for my pictures. i need to acquire images for long times (scale of minutes. not less than 8min). and i need to save them in a certain file format, right? unless there is a way to save the RAW image directly. i know that TIFF is simplest kind of lossless format so it shouldnt take too much time. i could use JPEG which probably is faster, but i would lose information by doing that.
  5. QUOTE (crelf @ Jul 2 2008, 08:30 PM) I attached it. dont worry about the name of the vi; i started out with the LLRing vi but then modified it.
  6. Hi, I want to save images directly to the hard disk during acquisition at a frame rate of 30fps. Although, this is a reasonable, not very high frame rate, im not achieving the frame rate im asking for. The maximum that i can get is about 14fps for 582x782, 10-bit images and an Ultra-320 15K RPM SCSI hard drive(which is empty; the OS is on another HD). According to my calculations, i should be able to easily save frames at 30fps, as all i am requiring is 17MB/sec, even if we assume that the bus speed is slow. I am sure that there is something wrong going on. Could anyone please give me some advise or suggestions as how to fix this? Using: Cohu 7700 Camera Link PCI-1428 Labview 8.5.1 Thanks.
  7. QUOTE (crelf @ Jun 5 2008, 06:54 AM) attached is the code that i was trying to modify. i found this code on one of the NI website pages. Thanks, Leen
  8. Hi, I need to take images continuously at high frame rates (~60fps) and then save these images on hard disk. I have no prior knowledge of how many images i will eventually be needing and i dont want to save the images in AVI format, but rather PNG. I tried using buffers to store my images while the camera is still taking pics and then saving them on the hard disk when the camera has finished acquisition, however, the frame rate that the camera is acquiring images at seems to be always much lower than 60fps. Does any one have an idea about how to take pics at 60fps and at the same time save them in PNG format? PS: softwares im using are LABVIEW 8.5 and IMAQ. Thanks, Leen
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