Hi chrisIm glad you jumped in. Concerning the topic would the following theory make sense ?
it seems that video capture and video tracking do not adress the same purposes :
- video capture allows 10 frames of latency to ensure that frame transfer is correct to the machine for later uses (post production, montage). This is the major usage now of video, because of DV camescopes and so on.
- whereas video tracking requires 1 frame of latency maximum, to produce real time responses. This is a emergent need, that seems to be covered by other softwares.
Im trying to crawl to the second point.
For instance, in pidip, it seems that there is a IE1394 object that processes DV type signals with a long latency, like pix_video does in GEM, and there is another object pdp_DC1394, that would be quicker, and could thus interface DC uncompressed industrial cameras without sticking them into the DVlike process, on Linux at least.
Does this make sense ?
Any DC pix_video object in GEM on MAC with 1 frame of latency ?
DC1394 available on MAC or only on LINUX ?
sorry for the verbose
cheers
JMA
Le 13 oct. 10 à 22:56, chris clepper a écrit :
Native color space will always be faster since it avoids a conversion step. A lot of webcams and industrial cams are RGB based. Video cameras are all YUV.
On Wed, Oct 13, 2010 at 3:02 PM, Jaime Oliver
<jaime.oliver2@gmail.com> wrote:
also, william got better results with rgba On Wed, Oct 13, 2010 at 12:01 PM, Jaime Oliver
<jaime.oliver2@gmail.com> wrote:
have you tried the latest cvs build of the macam driver?
http://sourceforge.net/projects/webcam-osx/files/
JOn Wed, Oct 13, 2010 at 2:38 AM, Jean-Marie Adrien
<jma@jeanmarie-adrien.net> wrote:
Hi
Using a PS3 eye on Mas osX 10.6 :
- with the macam program, out of PD, the response of the camera is very fast,
- inside GEM, (pix_video) the latency is half a second, as much as with DV camcorders.
I know this seems to be a recurring issue :
Anyone has a way to get a quick response with pix_video in GEM OsX ?
Any solution in pdp ?
Is it necessary to switch to linux, DC cameras and complex drivers ?
Any hint ?
JmA
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858 202 1522 (home)
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