Will you be supporting the Pro and Zoom models? Do you see any issues using an electronic shutter vs the mechanical shutter found in the P4P?
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55件のコメント
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Gaël (Pix4D) 正式なコメント Hi all,
From the 18.12.18, Pix4Dcapture V4.5 for Android has been released together with Mavic 2 Pro support.
Note that the live video stream is not available in this release for Android.
From the 08.10.18, Pix4Dcapture V4.1 for iOS has been released together with Mavic 2 Pro support.
We recommend processing the images using the p4d file generated when downloading the images to the device.More info about .p4d file generation here and how to transfer and process images after a mission here.
Best, -
Randy Wynant I know of at least 10 people in San Diego that also would like to know if/when the Mavic 2 series may be supported.
Thank you Pix4D
Randy
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Holden (Pix4D) Hey Pix4D users! Glad to see you are excited about how the new Mavic can be used with Pix4D. So am I. I cannot give you a specific timeline for how quickly the Mavic 2 models can be integrated for use with Pix4D Capture. It can take longer or shorter depending on the technical limitations of the DJI SDK for example. But your opinion helps us to prioritize which drones to integrate so I will pass on your comments to our capture team.
Both electronic and mechanical shutters can exhibit linear rolling shutter distortion and yea I have heard from colleagues that were at the event that both models will have linear rolling electronic shutters. This is not optimal for mapping as it tends to be more prone to pixel displacement distortion than a mechanical global shutter. That is not to say that it will not be used for mapping. Usually, this just means that you have to fly slower, and with the extended flight time of the Mavic 2 this may not be such an issue.
Something else to consider about the new Mavics would be that I expect the Pro model to be better for mapping than the zoom for a few reasons. The first is that the fixed focal length of the Pro model will reduce the variation in internal physical parameters relative to the zoom model. This may result in higher accuracy models and improved step 1 calibration. Another benefit of the pro is the larger resolution sensor. 20MP provides more data and will produce higher GSD models than the lower resolution sensor of the zoom model.
Personally, I'm still holding out for the Phantom 4 Pro RTK or Phantom 5 for a mapping specific drone but these still look promising.
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André Verville Hi Holden,
Could you just tell me if the Mavic 2 Pro will fly under Pix4D Capture with one of the Mavic configurations?
Thanks in advance.
André Verville
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Eye in the Sky Technologies From my recent research, I have found that rolling shutter can be a problem, but is rectified by flying slower. Do not change any of your camera settings or zoom while capturing your images. Pix4D has a rolling shutter algorithm to remove that, from what I have been told. The Mavic 2 Pro will create a "prettier" looking image because of the 10 bit color. Rolling shutter could/should be removed using their algorithm. Even when flying with a P4P that has a mechanical shutter, you should still slow down for best image results. The slower, or brief stop in flight, to take a picture is always better no matter what you are using.
Hopefully someone will be able to share a nice map they have created with the M2P to confirm my answer :)
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André Verville Thanks "Eye"! From our own experience with DSLR imagery involving a focal plane shutter, the same type of displacement than rolling shutter can be experienced and no, Pix4D rolling shutter correction does not apply correctly to this specific case. The effect shows up with our imagery taken from a Cessna aircraft flying at 40 m/s. Traditional air photography had FMC (forward motion compensation) mechanical corrections on the camera for that but we have designed something that applies to the imagery itself, included now in our batch geocoding/pre-processing suite. Tricky but working. We'll see if we eventually use the Mavic 2 Pro Hasselblad camera if a similar algorithm is required. See topopix.ca but sorry, only in French :-(
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Eye in the Sky Technologies Thanks Andre! That is interesting.....I may have to get my hands on a M2P myself to test this out!
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Johar Palacita How was the result of this M2P with Pix4DCapture ? Anyone have tested yet?
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Eye in the Sky Technologies It is hard right now because it isn't officially supported and makes the process tedious. Everything will have to manually uploaded. I'm interested to see the results too!
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Holden (Pix4D) Hey Andre. It should likely have its own profile in Pix4D Capture.
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André Verville Many thanks!
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James Moody Looking forward to Pix4D Capture supporting the Mavic 2 Pro. I really want to deploy the new Mavic for field investigations where I have to go cross country. It will help to limit the amount and weight of equipment I'm shuttling to and from the airport.
Kind regards!
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Brady Ward Please add me to the hundreds of others who want Mavic 2 Pro support for Pix4D. I manually flew a tiny mission trying to guess at overlap. Just 8 images (missed one which would have made it a 3x3 grid). uploaded to Pix4D and was actually surprised as to how well it did. the i combined it with a POI circle, manually taking pictures and it did a pretty good 3D model.
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Holden (Pix4D) Hey Brady. That does look good for only 8 images. Keep in mind that the camera model is not yet included in the Pix4D camera database so you may find that results improve further by following the perspective lens calibration procedure shown in the link below.
https://support.pix4d.com/hc/en-us/articles/206065716-How-to-calibrate-a-Perspective-Lens-Camera
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Capacitación Agricultura precisión Dear @Holden (Pix4D), it would be fantastic to have soon Pix4D Capture support for the new Mavic 2 Pro with the Hasselblad sensor!
The best and thank you in advance
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Luke Skywalker Hey @Brady, any chance you could share a few of the raw images that you took, I am particularly interested in an image that looks straight down and has shadows and full sunlight in it.
You model looks really good for just flying around without the app working with it yet!
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Brady Ward nadir image sample: https://unsee.cc/....
[edit] That didn't work very well... Can't download.... Need a better temporary image share.
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André Verville Well Holden, it looks like the Mavic 2 Pro is not yet in the list. I don't see it. I tried to connect with my new M2P received yesterday and although it connects to the drone telling Capture to use the Mavic Pro settings, the check list cannot be cleared.
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ashley quinn Anxiously waiting for M2P support! @Holden, it's possible to map with Pix4Dcapture and manually upload? Is there a tutorial for this? much thanks.
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Holden (Pix4D) @ashley. Im not sure what you mean. You can certainly manually capture the images and process in Pix4D Desktop or Pix4D Cloud afterward with the images if thats what you are asking.
Usually, support for a new drone (without any additional roadblocks) takes about 2-3 months from development through to testing and all the way to roll out. The Devs would kill me if they knew I gave a timeline because there are a lot of mitigating factors but there it is. That is not a hard quote but if the issue is motivated, that is what we could see in terms of rollout. I have seen a lot of calls for supporting the new Mavic 2 pro so I think that the motivation is there.
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André Verville Hi to all those looking forward for Mavic 2 Pro support on Pix4D and Pix4D Capture, here are some experiment results as of today with a brand new unit, I will try to make it short.
1. As I said previously, Pix4D Capture is not yet to it (won't let it fly). For now we need to wait as Holden says.
2. In the meanwhile, instead of flying manually, what about flying with simple waypoints? Unfortunately, DJI Go does not allow offline waypoints creation (need to be flying to them before). Litchi ( https://flylitchi.com )can do that and they have a beta version for Android and IOS for those interested in trying it on the Mavic 2. It is pretty cumbersome creating them manually but is works. Once you have them, you can start a mission and fly along this manually created flight plan (approximate for sure). Oups, I forgot: you need to put the camera in time lapse mode to trigger the camera while flying.
3. The photo's EXIF data presents another problem: first, the altitude is wrong, it is a negative value with an outstanding number of digits equal to the above ground altitude, probably expressed in microns (!!!). Second, Pix4D has problems digesting the Lat-Lon and seems to disperse the photos in 4 blocks about 500m from each other. I had to extract them with a batch image editing software (Graphic Converter on a Mac) and create a CSV file that Pix4D can then apply correctly.
Camera parameters are already in Pix4D: L1D-20c_10.3_5472x3648 (RGB). You can refine its parameters once a process is executed with it, and the rolling shutter algorithm seems to do its job ok. Sorry I did not yet check accuracies with centimeter-grade control points.
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Holden (Pix4D) Hey Andre, thanks for the good info. one question. when you say "Second, Pix4D has problems digesting the Lat-Lon" what do you mean. I would imagine the geotags are in WGS84 (like all other consumer DJI drones). This usually works no problem. can you provide screenshots or an example of the issue you are experiencing?
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André Verville Yep geotags seem normal WGS84 but probably only you at support can look into the details why Pix4D does not like those tags. I can submit a support ticket you can then follow if you will. I will then be able to provide you guys with screenshots and image sets.
Will do during the weekend.
André
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Holden (Pix4D) Sounds good. I'll look into it. Mention my name in the ticket so that it gets routed to me.
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Laura Wirsig Hi Holden,
I'm also waiting on the Pix4D compatibility with the Mavic 2 Pro. I started my Pix4D free trial this weekend before realizing Pix4DCapture wouldn't work. Is there any way to pause or reset the trial countdown until the software is updated?
Thanks,
Chad.
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Holden (Pix4D) Hi Chad. I will add your comments to the other users that have requested support for the Mavic 2. In the meantime, you can consider capturing images manually for testing purposes. Every trial can be extended once. You can do this once it expires in the license management portal when signed into Pix4D online.
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Holden (Pix4D) For anyone looking to discuss the Mavic 2 geotag issue, I have created a separate post for this discussion. see the link below.
https://support.pix4d.com/hc/en-us/community/posts/360023780831-Mavic-2-Incorrect-Geotag -
Mark Killip What are people using as a workaround in the meanwhile while we wait for the software and bug fixes to catch up?
I have managed to get automated imagery using DjiFlightPlanner to plan the flight and the Litchi app to fly the path (which got updated yesterday to support Mavic2). I have guessed at the speed (I used 12km/h, 3 second camera interval and 60m height with 80% overlap) but if anyone has any recommendations for capture speeds it would be very appreciated.
It is my first time doing any of this, but I am certainly seeing a bunch of issues with the final imagery .tiff file and the point cloud has huge gaps with no data.
Any suggestions on settings? I wanted to use a pause to take the photos but the Mavic seems to have a 99 waypoint limitation in the firmware that stops this working at the moment. Because of this I set a timing interval of 4s and flew at 9km/h to try to keep things crisp and a flight height of 200ft (60m or so - the app didint do flight height in metric), then did later flights at 12hm/hr and 3 sec interval.
Still big issues with the location data (as per Holdens links above), and it wasn't even a consistent error (half the images were offset from the others by 500m or so). Trying to use my GCPs is a nightmare, as the automatic positioning when I import them is out by half the distance to the moon.
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Gaël (Pix4D) Hi all,
From the 08.10.18, Pix4Dcapture V4.1 for iOS has been released together with Mavic Pro 2 support.
We recommend to process the images using the p4d file generated when downloading the images to the device.More info about .p4d file generation here and how to transfer and process images after a mission here.
Best,
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