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Darrenddmp Posted at 2018-1-17 19:17
this such bulls about hardware limitations. zhiyune crane has just added the feature to all there hand held gimbals and your telling me that dji up to now cannot deliver on such a simple feature?!?!?!?
Unfortunately, I don't think people take the time to actually think through what it takes to do active-track on the original Osmo versus the Osmo Mobile or Zhiyume gimbal handles. I guess it's just easier to complain.
With the Osmo Mobile (or Zhiyume gimbal handles), both the image and the active-track application sit in the phone. It's an easy enough process for the application (and today's powerful smartphones) to analyze the video images and tell the gimbal where to move to keep the selected object centered.
With the original Osmo, the process is quite different. While the active-track application would be (or is) sitting on the phone, the video images are sitting in the Osmo camera. They need to be transmitted via slow wifi to the phone before any analysis and processing can take place. Once that's done, it needs to send the gimbal the re-centering commands, again via slow wifi. Unfortunately, the video sent from the Osmo to the phone isn't the full resolution video. It has been down-sampled to speed up the transfer so the video on the phone looks as real time as possible. The implication is two-fold: 1) the process is slow, and 2) because the video images that are analyzed have been down-sampled, the centering algorithm will probably not be as accurate. DJI has chosen not to include active-track functionality in it's software (GO) for the original Osmo not because they didn't try it, but because they decided it did not meet their quality requirements - e.g. it wouldn't work very well and they did not want to deal with all the complaints.
DJI certainly could have built the capability into the camera to analyze and re-center objects had it chosen to, but that would have had to have been a very early decision in the original design. I might also add that it would have, no doubt, added to the cost of the Osmo (memory, processing hardware, more complex firmware) - probably far beyond the cost of the two software solutions you have access to today to provide active-track.
I'm just amazed at how people complain about spending $10 or $20 to add functionality to a $600 product if that functionality is important to them. As I said in my previous post, neither of these solutions is perfect, but they do work as long as the centered object does not move too fast and there is enough differentiation (contrast) between the centered object and background. These two issues are the specific result of the problems I described above regarding the process that is required to do active-track on the original Osmo. I, for one, am glad DJI made the Osmo an open platform where third-party developers can provide additional functionality if they see a demand for it.
I hope this explanation helps people understand the active-track issue on the original Osmo more fully. |
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