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Revopoint Popscan vs Agisoft Metashape 3D scanning Showdown
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- Опубликовано: 9 дек 2021
- I compare the Revopoint hand held POP scanner to Agisoft Metashape photogrammetry process.
I look a the work flow, and the results of the two scanning processes.
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Dear Eric Big Thanks for your Deep Dive..
Great video, that last shot really highlighted the differences. Scanned to scale is very useful. Mahalo for sharing! : )
Yes, you're very observant I totally agree.
Super informative, thanks!
Fascinating! And SOOO helpful! Thank you for making this video! I've been wondering about this for months. I love photogrammetry and had been considering buying a scanner. I think I'll stick with photogrammetry :D
Pop2 just came out. Hoping to try it out soon.
Eric, If you would consider a future tips and tricks or experiences related to production run casting issues such as scaleability, profitability, mold longevity, etc... I think a lot of us would be interested in that topic.
Thank you for what you do! Your channel is amazing.
The pop does indeed connect to your computer directly (with usb3) if you want it to. Wi-Fi is an optional feature. If your PC only does usb2 then that might be why it didn't work.
Nope, not using USB-C
@@EricStrebel I own the POP and I'm using it this way so.... Yeah, I'm certain that it does.
On one end you have a USB 3 connector for your PC, and on the other end you have a USB-c which connects to the POP USB-C port. No wifi needed.
Or you can use the cable with two usb-c connectors, if your PC(laptop) has a usb-C port. Mine does. And POP Works fine this way on my Win10 laptop, with either cable, no wifi connection.
If it wasn't working for you then maybe the host was not providing enough power. For example, an unpowered USB hub will probably not provide enough power to it. Or like I said it has to be an actual USB 3 port (colored blue usually). A usb2 is the same size and shape, but only colored black, and won't give enough bandwidth for the scanner so it won't work. Usb3 or usb-C port definitely required on the host in lieu of Wifi
Hope this helps! Love my pop but can't wait for pop2 in February. 200% better resolution!!!!
Perhaps there has been a software update they have been promising one for quite some time. Perhaps it's available now that the pop scan 2 is closer to production
We need more of 3D scan vedios we have been waiting for a long time
Glad to hear you used the proper term, photogrammetry. Like all tools, they do an excellent job based on their features. I’m surprised you can’t configure different scan resolutions. If not, then it’s not meant to be precision tool. 👍
Scan resolution is based on image size - I do photogrammetry of objects and houses with 48MP cameras and the resulting mesh detail is significantly finer than for example photos done with an iPhone.
I’ve spent £
what kind of things do you scan? I'm thinking about buying a 3d scan for action figures instead of using photogrammetrie
Wait for the pop 2, it's on Kickstarter
OpenScan is far better.
@@EricStrebel kickstartert ist over, it was for sale for 400 EUR, now its more than double the price!!
@@JamesRothschild you compare photogrammetry scanner vs. structured light scanner
Would be great to know if (and which) higher priced scanner surpass Metashape to have the best of both worlds (hi-res and speed)
Great comparison... photography everyday.
There’s plenty of other things to crack on with whilst its processing.... not to mention the computing power at our fingertips in 2021... 2022 should be the biggest leap in the history of computing... 2.5+ increase in one generation of graphics processing.
🇦🇺🤜🏼🤛🏼🍀🍀🍀😎🤓
Regarding scaling: my guess is that the Popscan us using the spacing if the lights on its turn table to calculate where the camera is relative to the turn table and the object being scanned.
Overall good comparison, what is lacking is a best fit with measurements in my opinion, maybe you can update us on that.
Eric, the photogrammetry can't get the scale right out of the box unless you calibrate your camera (no idea whether the sw can do it - check!). That's simply because of how the math works - the scale is a free degree of freedom that is impossible to determine without knowing the camera properties.
The POP scanner can do it because the calibration was done by the manufacturer already and it is known to the device/software. However, with your own camera the sw has no idea about your lens, size of the sensor, etc.
Makes sense, I assume you can set that in the software
@@EricStrebel I don't know how Agisoft handles it, having never used it. But in general camera calibration involves printing out some patterns (checkerboard, circles, etc) of known geometry, taking a lot of pictures of them with fixed zoom (focal length must not change or it invalidates the calibration!) and then having the software crunch the numbers to calculate the required calibration values.
Another option is simply taking pictures that include some reference object of known size in them (ruler, gage block, etc.) and then rescaling the result using that. However, that alone is not accurate because the calibration above also corrects for lens distortion - e.g. barrel/pincussion distortion, etc - basically lines are curved and not straight which throws the calculations off.
Sorry, this is not 100% correct: if done properly (keeping the EXIF/metadata), the images will contain the information needed for Metashape to properly create a model. If you read Agisofts documentation, they suggest not correcting the lens distortions. Metashape can even solve fisheye data. As far as scale, putting a reference object in the scan should suffuce if the scale needs to be adjusted. If for some reason you are using a camera and the metadata got erased, you can manually enter the info in Metashape.
Thanks for the info, so many features in that software, it could be a bit more user friendly in the UI
@@EricStrebel yeah, it weird, but I have heard some other programs are even worse. Hard to believe thougj. I have used Reality Capture, which is definitely faster, but I felt the texture data was better from Metashape (I am a game artist so that is important). Alice Vision actually has a nice interface, however it is slower than a slug. Metashape, for the cost is the best deal IMO. If you haven't, make sure to turn on the GPU accelerator in Meta shape: Tools>preferences>GPU
Love your videos BTW!
Agisoft with a good DSLR and lens is far superior in resolution to the POP.... but as you have rightly pointed out, using the POP is a much easier and faster process. To be fair the POP has nearly as good if not better resolution than that of my old Artec MH/EVA machine which cost tens of thousands of dollars back in the day. So obviously the POP represents an overall excellent value for money but it largely depends on your budget and requirements. I purchased a POP myself and I think it has its uses :-)
BTW - Agisoft will provide accurate scale but you have to use the PRO version ($$$$) and you will need to use scale bars or an artifact of a known size/value. It's also relatively easy to set up the alignment to the WCS in the pro version of agisoft.
@@TheRealJerseyJoe I've been using the standard version of Agisoft Metashape and I discovered that I if I put stickers on the master model and space them out about an inch (edge to edge), then in Modo, I setup a system where I lock a locator on both stickers, and moving one will rescale the model to exact size
I might look into using the pop scanner for making head mounted hardware for my clients since details will not matter
@@KRGraphicsCG - Absolutely, that will certainly work !
Sweet, fusion has a scale tool in it for importing images. That works well. But adding a ruler or an object of known length when scanning helps
I've tried photogrammetry in the past with no sucess whatsoever, probably just not doing it right. I ordered creality's new 3d scanner for $300 so we'll see how that works.
I just ordered the new version, the mini. Hopefully you get a chance to try that one out and if so please post a video, be curious to see how it compares since its supposed to be higher resolution.
Hopefully that will happen
Have you tried Reality Capture vs Agisoft?
with the generatable tags it outputs a properly scaled model
Would have been much more interesting if you had aligned the scans to the original body, and do a boolean subtraction to show the actual differences.
Yeah, could have been a way to show it, but you got the idea of the detail level.
Hey, great video. Try to use markers for scale recognition
I've been using my Nikon D3300 and the RevoPop doesn't come NEAR the quality of Agisoft Metashape.
Can you scan an item and then convert it to standard engineering drawings? My company is looking at doing this rather than hand measuring, creating mechanical engineering drawings with angles and exact lengths/ thicknesses of pieces and then converting to a CAD/OBJ/STEP format. Thanks.
Once scanned they become a base or an undarlay. Then you can build on top of that
Nice work as always, thank you. Was this the POP scanner with 0.3mm resolution or the POP 2 with 0.1mm resolution?
.3
Hi, the POP scanner with 0.3mm resolution and the latest POP 2 with 0.1mm resolution
I am hoping to get a unit to test with once it is available. Curious to see the difference
I have a POP2 ordered via Kickstarter. I expect to be doing a fair amount of mesh repair but I think it’s always going to be a trade off, time and money, money and time 😊
@@peteredwards2371 Agree and hope you can get it soon
I have that scanner and getting the pop 3. Did you try the face mode ? I believe it has better detail, although I'm not sure if it has to be a face or not
Where is the link for the photogrammetry turntable setup video? Do you have plans/files available to build this. Looks amazing.
Link is after the 3 minute mark in the top right of the video. I have added it in the description as well.
@@EricStrebel must have been my phone. The link didn't show up. Love the video. Thank you for your reply.
Hey Eric, question for you unrelated to this video. I was watching your apple pencil video from back in the day where you dyed the tip black with sharpie - thinking of doing that to mine - how well did it hold up overtime and would you still recommend it?
Eh, I would try a stronger dye for long term, perhaps using heat will help for permanence.
@@EricStrebel Appreciate the quick reply! I was looking at 3rd party tips that are black but they apparently don't work as well as the oem ones from apple. I'll play around, thanks Eric!
you can plug it right into your desktop without issues on pc they're still working on the mac stuff
I was not able to do so on my Mac
@@EricStrebel Yea they're still working on the Mac stuff
Have you compared the pop scan II?
No, I have not been given a sample unit to test with yet. Hopefully in the near future
when u open a package cover the label, you flashed your entire address
So
can you align two models in metashape, then get better texture from photogrametry with scaned model?
Dunno
@@EricStrebel I am studying this method: use 3 Point Align ADD-ON in blender, you can align the pop2 model to metashape mode, then import to metashape than get better texture.
@@EricStrebel Ok , I did it , It works~
Photogrammetry workflow suckkkkkkks though. Tried it several times.
Not always so great, but it's cheap and always getting better
@@EricStrebel true. There needs to be a LiDAR photogrammetry combo that’s real-time. The LiDAR iPhone apps are quick and easy just lacking resolution.
Hope we see that moving forward
it's a handheld device ..;and you use the turn table....
that's the main advantage, but not enough accurate...still the same cheap electronic. censor inside doesn't worth more than 60$
Accurate statement
Revopoint's software is horrendous. What is wrong with these Kickstarter projects that totally ignore the user experience? And re-naming your phone "POP" so the camera can connect to it? Hell no.
Yeah , it's pretty wired, not acceptable really.
i told POP scaners people the sme and they told me i am just not using it correctly but they have a new release of the POP SCANNER in higher resolution go figure that hum....!!chit show to bad its close POP SCANNER PEOPLE PAYATTENTION
👍😎👍
3D scanning still isn't anywhere near useful. If you need details, you're not getting it with 3D scanning yet.
We are getting there, apple is showing good potential.
That's a bit strong statement. It depends on your needs - and budget! There are metrology grade scanners that will get you details down to 0.1mm (or better) resolution - from several meters distance! But if you have to ask about the price you can't afford it.
Also, one typically doesn't use the scanned data directly but as a source for remodelling the object or measurements. So the lack of details from cheap scanners may or may not matter, depends on application.
Well, the thing is that 3D scanning right now it's useful if you first scan the item and then use it as base, like if you were using tracing paper to copy a drawing. Saw a couple of videos that do that, even the most expensive scanners with the finest resolution are only used to bring the model to the digital world as base. And forget about small details they are the most difficult to scan
Have to agree, curious to see how the pop2 performs