Very interesting - I was able to test it in real life and am impressed. In order to export the data from pix4Dcatch, I definitely need a pix4D subscription. Otherwise I can't get the photos (and of course no other data either). So if I only need the images for my own photogrammetry, what is the minimum variant of a Pix4D subscription to enable export? I would like to then combine the images recorded using Pix4Dcatch, the Emlid Reach RX and the iPhone 15 on the handle (I already have all of this) using corrected NTRIP provider data in combination with data from the RTK drone to process everything in Metashape. Is there any experience with whether and how the combination works?
You would need a Pix4D catch pro license (e38surveysolutions.com/collections/pix4d-emlid-scanning-kit/products/pix4dcatch-professional?variant=44997615354083) to enable export. That will also be necessary to connect to your RX or use the AR tools within the app. We haven't tried combining everything in Metashape, we're still in testing to learn the ins and outs of doing this with the Pix4D software.
Right now this kit only works with the RX, catch does use multiple sensors from the iPhone in addition to the RX for the positional data of the pictures.
At 2:30, you show a map of the surveyed track/path, with yellow indicating reduced accuracy. Can the images/LiDAR points collected with reduced accuracy be filtered out and collected again?
Yes you could do that, however processing in Pix4D cloud or Pix4Dmatic should allow you to clean up your data as necessary. As of now we're not sure exactly how Pix4D implements the LiDAR data in conjunction with the photogrammetry processes that they're applying to the dataset, but hopefully we'll have some clarification on that soon.
No, the offsets that are important are measured from the RX to the camera lens of the phone. If you're using this kit with the SPC+ case on your phone you can select SPC+ for the pre-configured values for those offsets.
@@e38surveysolutions59 Okay thanks. Interesting that the viDoc uses a laser plummet to determine the distance to ground, but no distance to ground data is needed in this case.
@@e38surveysolutions59 Thank you for the reply. PIX4D claims that a base station is not needed for GPS denied areas (under a bridge or close to a building) while using Catch based on the “tracking and inside geofusion” (their words from a video). Do you find this claim to be accurate?
@@robertobey9415 I imagine it is not quite black and white and that there could be accuracy degradation depending on how much area you were covering while GPS denied. You may need control in some GPS denied areas to tighten up your accuracy.
Accuracy in RTK/GNSS under canopy? 5 meters is the best what you are hoping for. I do not think that PDOP of under 1.0 is real when you are close to a building, so i am not trusting this values from Emlid
@@furiou3 I see hdop and vdop, which both seem pretty low, but I don't often look at those values, typically I just look at pdop too. Is there some way you calculated a pdop lower than 1.0 with the given information? Or did I just miss the part where there was a pdop given? If it is an issue, it's likely not an issue in terms of what Emlid is reading, but some sort of issue when it is reported/interpreted by catch. I'm sure they will just update the app in that case and it will show properly.
We haven't run any head-to-heads in terms of data quality. One functional difference is that we can unscrew the RX, put it on a rod and run it with Emlid Flow or Flow +Survey, or even MicroSurvey FieldGenius for Android if we need a fully featured data survey software.
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Very interesting - I was able to test it in real life and am impressed. In order to export the data from pix4Dcatch, I definitely need a pix4D subscription. Otherwise I can't get the photos (and of course no other data either). So if I only need the images for my own photogrammetry, what is the minimum variant of a Pix4D subscription to enable export? I would like to then combine the images recorded using Pix4Dcatch, the Emlid Reach RX and the iPhone 15 on the handle (I already have all of this) using corrected NTRIP provider data in combination with data from the RTK drone to process everything in Metashape. Is there any experience with whether and how the combination works?
You would need a Pix4D catch pro license (e38surveysolutions.com/collections/pix4d-emlid-scanning-kit/products/pix4dcatch-professional?variant=44997615354083) to enable export. That will also be necessary to connect to your RX or use the AR tools within the app. We haven't tried combining everything in Metashape, we're still in testing to learn the ins and outs of doing this with the Pix4D software.
Please show the OBJ mesh this creates. Along with full color texture map
Here's an export of all of the data from this mission: drive.google.com/drive/folders/1AmTQgh_Ybh3F61RSoh5teXNDOrFg2N2-?usp=sharing
Have you used the trimble site vision? If so how do they compare?
We haven't tried the trimble site vision
What happens if you hold the system at an angle. Is the IMU from the iPhone used?
Can you also use the RS3, so you could use this IMU?
Right now this kit only works with the RX, catch does use multiple sensors from the iPhone in addition to the RX for the positional data of the pictures.
And what if I have to pick up a water pipe, then I have to keep the Emlid level. Is the accuracy then guaranteed?
There's no guarantees, but that's what this kit is designed to do and I would expect to be accurate to less than .1" in normal circumstances.
At 2:30, you show a map of the surveyed track/path, with yellow indicating reduced accuracy. Can the images/LiDAR points collected with reduced accuracy be filtered out and collected again?
Yes you could do that, however processing in Pix4D cloud or Pix4Dmatic should allow you to clean up your data as necessary. As of now we're not sure exactly how Pix4D implements the LiDAR data in conjunction with the photogrammetry processes that they're applying to the dataset, but hopefully we'll have some clarification on that soon.
@@e38surveysolutions59 hello, just wondering if you had heard from Pix4D about this yet? Thank you.
Is the receiver vertical height above ground (typically pole height) not a concern in this application?
No, the offsets that are important are measured from the RX to the camera lens of the phone. If you're using this kit with the SPC+ case on your phone you can select SPC+ for the pre-configured values for those offsets.
@@e38surveysolutions59 Okay thanks. Interesting that the viDoc uses a laser plummet to determine the distance to ground, but no distance to ground data is needed in this case.
Is the Reach RX able to connect to non-Emlid base station?
If the non-Emlid base can be set up as a network base and send corrections over NTRIP, yes.
@@e38surveysolutions59 Thank you for the reply. PIX4D claims that a base station is not needed for GPS denied areas (under a bridge or close to a building) while using Catch based on the “tracking and inside geofusion” (their words from a video). Do you find this claim to be accurate?
@@robertobey9415 I imagine it is not quite black and white and that there could be accuracy degradation depending on how much area you were covering while GPS denied. You may need control in some GPS denied areas to tighten up your accuracy.
How accurate is that equipment in the forests under canopies? Can you make comparison?
We haven't tested this equipment in that type of environment, but we could do that for a future video.
Accuracy in RTK/GNSS under canopy? 5 meters is the best what you are hoping for. I do not think that PDOP of under 1.0 is real when you are close to a building, so i am not trusting this values from Emlid
@@furiou3 I see hdop and vdop, which both seem pretty low, but I don't often look at those values, typically I just look at pdop too. Is there some way you calculated a pdop lower than 1.0 with the given information? Or did I just miss the part where there was a pdop given? If it is an issue, it's likely not an issue in terms of what Emlid is reading, but some sort of issue when it is reported/interpreted by catch. I'm sure they will just update the app in that case and it will show properly.
How is this better than the pix4d vidoc? Just wondering for comparison.
We haven't run any head-to-heads in terms of data quality. One functional difference is that we can unscrew the RX, put it on a rod and run it with Emlid Flow or Flow +Survey, or even MicroSurvey FieldGenius for Android if we need a fully featured data survey software.
So same thing as vidoc but more diverse. Will it connect to DJI d-RTK base?
@@NateLeeProductions No, but you could connect it to the Emlid Reach RS2 or Reach RS3, which you could also use as a base for RTK enabled DJI drones.
It works with the RS2+?
As of now it only works with the RX
Is that using the iphones LiDAR as well??
Yes it is
Sick🤘🤘🤘
We use both LiDAR and Photogrammetry, which produces far better point clouds than the standard iPhone LiDAR.
works whit a M2 too?
As of now the scanning kit is only compatible with the RX
Im sorry WHAT. I had no idea it had this capability.
That makes sense, this is a new product/implementation in the software that released today.
@@e38surveysolutions59 that's awesome!
@@e38surveysolutions59 it was just launched yesterday!!