Photogrammetry 2 - 3D scanning with just PHONE/CAMERA simpler, better than ever!

[@ArtByFinch]

My grandfather was a photogrammetrist back in the 60's until he retired in the late 80's, He died when I was young but it's amazing to think that he spent half his life working with the same mathematic formulas they use for measuring photos to print models in this video lol

[@Przemolob1]

Do you have some examples of his work?

[@MrBizteck]

Bookmarks for me. 0:30 Recap 02:10 Taking Photos 04:15 Standard Reconsturction 04:50 Hit Start Or Structur for motion out Tip 05:30 Troubleshoot capture issues 05:45 when Happy Complete Cpmputation 05:55 Notes Turn Green as they c0mplete May take a while 06:12 Double click TEXTURE BUTTON 06:30 Export Model to Edit 06:45 Augmented Reconstruction 08:14 Live Restruction 09:10 All Mesh are Hollow-Plane Cut 09:30 Change Scale 09:43 Sculpting 10:03 Wiki Wiki Time! step 1 Drag photos into Programme Step 2 Right Click Structure from motion-Compute Step 3 Wait until computed Step 4 When Happy Finish Compution Step 5 Double Click Texturing Note to View the model Step 6 Export Model Step 7 Plane Cut in 3D sotware Step 8 Change Scale to suit

[@JB0lant3]

thanks. Love your comment

[@kernelpanic615]

thx for the bookmarks realy helpfull

[@blackcat49345]

love you

[@zashbot]

Very helpful thanks

[@elonprince9868]

You prolly dont care at all but does anybody know of a trick to get back into an instagram account? I stupidly forgot the login password. I appreciate any assistance you can give me.

[@tobiaszstanford]

This is unreal technology. Going to be using this for scanning objects for my college game project. Can’t thank you enough for showing this.

[@damagedtalent]

This is by far the best video about meshroom. There are tips here that Google has a hard time finding. I am impressed.

[@polydynamix7521]

This is the most amazing thing I've seen in at least 24 days. Now I don't know if I want to 3d print something or put it in Unity... or whether I want to mod my house into GTA5... or build a rig that automatically rotates the camera around an object.

[@talharoxen]

how can u make mod for gta from 3d file?

[@polydynamix7521]

@@talharoxen you mean putting the 3d model into GTA? You use the mod tools, I forget which one you use to export to rockstar format but it should be easy to find. There's 5 or so tools in total that help you mod, it's not as easy as a Bethesda game but it's not that hard thanks to lots of documentation and community support.

[@talharoxen]

@@polydynamix7521 Thanks. I will try to find them. always wanted to make and mod cars in gta

[@gernrene]

It has advantages, but also disadvantages. This is why we combine different scanning techniques for perfect results. Great video and great progress in the software!

[@datarioniboii3986]

@Mage Enderman Well, I dont work with photogrammetry, but I have read that they also use laser scanning. Its the most precise way to scan a object and the results are outstanding. Here is a video by Konami scanning Schalke 04 stadium and showing previews from the game: kzbin.info/www/bejne/p3LOhnlqgMears0

[@Faiq_h]

imagine drone preprogrammed photo sequence shots. you can get some nice details of sculptures now.

[@logitech4873]

I did this with a local cathedral (with permission, of course). My results then weren't great however, so I may have to try reprocessing the images with this software.

[@Acerbjorn]

I'd imagine a cathedral with all it's arches and stuff would also be a very complex model to photogrammetry.

[@logitech4873]

*+Acerbjorn* - Look up "Lofotkatedralen", it's not the gothic type :p

[@Mavi222]

There is a Litchi software for DJI drones that can do that. You just set the waypoints and camera angle and it should work (but be careful if you use that)

[@REDxFROG]

@@logitech4873 you either need a better camera or fly closer. If you used Photoscan or even RealityCapture, you will not see improvements in other software.

[@shrinkhh79]

Awesome, i know exactly where that first statue is, one of my favourite spots in Prague. I go to the cafe in the National gallery and that restaurant to the right all the time :)

[@ipanzerschrecku4732]

Note: Always take note of what focal length you're shooting at - take not of what lens, focal length, camera type and settings you're using. If your scan comes out wrong it can help you when having to enter metadata manually if a problem occurs. It's especially important to make a note if you're using a smart phone camera because often vital data such as focal length is not recorded in the metadata - which is some cases makes the pictures unusable if you can't figure out the focal length and enter it manually. I can strongly recommend people using the following trick: Import the photos into a program like Photoshop or GIMP and add a mask around your object removing detail in the background. You can also zoom in if you couldn't get close enough to the object in the first place. Remember to retain all metadata while exporting your photos.

[@GioMdeM]

Thank you!

[@Mr3buna]

TIP for photogrammetry 3 tutorial - about making whole model of the object - including a bottom (or sole).

[@johnnasta]

If it's a small object you could use armature wire to hold it up so that you could see under it. In any case, try to put the model on a base that is smaller than the model.

[@movax20h]

Awesome video! Would be nice if you do a live tutorial on 3d reconstruction of more problematic objects, like ones with shiny and flat surfaces without texture. I.e. like reverse engineering old injection molded parts with glossy surface and flat color, or something like this.

[@tangentarc7477]

Just when my modelling abilities were starting to improve, this comes along and makes modelling obsolete. I've wasted my life. It is rather cool though. Can't wait to try it!

[@Prusa3D]

Hey they're not obsolete! For mechanical parts, CAD is still the best option. And for organic shapes, you'll be really happy to know basic modeling when working with photogrammetry meshes, they almost always need a bit of editing/clean up before printing :)

[@tangentarc7477]

@@Prusa3D It's good to know I'm not worthless just yet lol. It's funny you should mention CAD, as I recently started using CAD to design machines, and have also sucessfully made game assets from CAD models. All of the metal targets in my FPS game are actually real-world products that I produce. The game models are just slightly reworked CAD models.

[@roidroid]

I bet you can also take in-game screenshots to effectively "export" asset 3d models from games that dont allow you to access such data.

[@4WDJUSTY]

I tried it and it sucks, game graphics are not that close to reality... :/

[@sementhrower420]

@@4WDJUSTY How many shots did you take?

[@bytebender]

you might be interested in GL Intercept github.com/dtrebilco/glintercept here is one possible application (note this guide is quite outdated): brian-horning.com/google-earth-to-obj-using-glintercept/

[@thomaswei8416]

I did that with an ingame item from csgo. Worked quite well actually. Used 120 shots or so!

[@iacchoiai39]

You can also take screen shot of google map (3D buildings) make a model, and sell it for 15 USD (yes some people actually do that)

[@Javawok]

Awesome video. I am loving photogrammetry. My favourite hobby and will definitely give meshroom a try

[@de4mator]

Oh wow, I've recognized the accent and the statue of Dvorak, then I found the video about your printing farm. Great job you're doing there! I wish I could visit the farm one day and film interview with you!

[@sausagesmcgee7079]

you're asking basically the daddy of the whole maker scene for an interview :-) he's a legend for sure...

[@GaryMcKinnonUFO]

Better than spending £350 per year for autodesk recap pro subscription! Liked and subbed.

[@wernervienna]

Thank you for the video. I was new to the topic and tried to read up on it, but your video was just perfect to get into it. Especially the hint that you can make ideal photos on cloudy days has helped - on cloudy days it is not lacking here with me anyway...

[@ericwebster6911]

Going to scan my MK3 and print out a pocket sized version. :P

[@antdx316]

how did it turn out?

[@Thebigbean114]

why not just print a new one

[@newsjunkie3000]

What a time to be alive!

[@ooocarneiro]

Great video! Just a small correction: Wikipedia is another website. Many sites have wikis, but Wikipedia is something else. 😉

[@toyotaboyhatman]

this looks very promising, can't wait to try it out this weekend!

[@AngadAnkalaR]

Did you try it out!! Just curious

[@3DGeekShow]

Amazing!! Hello from Brazil!

[@Prusa3D]

Hi!

[@ThisPossumKnits]

4:19 - the main thing I learned was that you can graffiti bushes! 😂 Great vid thanks! I'm trying it out now! 😃

[@crossthreadaeroindustries8554]

Great vid - this gets at what 3D printing is really useful for - graduating beyond Thingiverse downloads.

[@GiorgioTedesco]

Woooo... I just discovered last month!!! Awesome software!!!

[@roblesliemedia]

Awesome work. Great tips and I can vouch for many of your tips from my own experience getting Meshroom finally working this week.

[@hightde13]

Very cool. thank you for letting us know about this program. I've not been super happy with photogrammetry since 123d Catch was taken down and this looks like it may get me back in to it again!

[@daveys]

Thanks for explaining this. I have Meshroom already but hadn’t got it working properly yet.

[@joinronin9693]

Thank you for making this photogrammetry tutorial. Very informative and helped me.

[@techsavvyhero]

Great video!! Thanks for introducing Meshroom to us and a tutorial on how to use it for photogrammetry :) I was going to start doing this soon with Autodesk ReCap, but this might be a good alternative as well.

[@月半司机]

This reminds me of the "Building Rome in A Day". Great video! :)

[@darthjump]

This calls for an Update.

[@ruinsage2677]

This is going to be awesome for my 40k conversion projects

[@dreggory82]

This makes me excited to try photogrammetry again.

[@AngadAnkalaR]

Me Too... Absolutely!!

[@dafoex]

The live reconstruction might be fun if you have some sort of file syncing tool. Take pictures on your phone and have the model already processing by the time you get home.

[@TKs3DPrints]

great video. i always use photogrammetry but now also use projected light scanning. but the texture maps is the main reason for photogrammetry.

[@brutal6129]

Best photogrammetry tutorial

[@UncleJessy]

I hate your teams amazing video editing ability ;) another RAD video guys

[@florianjuri]

Rad

[@AshLordCurry]

Just as usual, beautiful video, incredibly made

[@sibernetikvehububata.s7158]

About 11-12 years ago, there was a prototype of this tech. Looks like it reached to it's full potential over the years.

[@Prusa3D]

There's still plenty of room for improvement, especially when it comes to speed and ease of use. But yes, it's pretty incredible how fast did the technology improve :) - Mikolas

[@subsyairsoft]

Brilliant! Wow! We’re moving on aren’t we?!

[@dannyKurt]

This is awesome. Planning on getting a prusa very soon.

[@sychrov81]

Wow, uprime videl sem thumb asi pred 3 tydnama nebo kdy a az ted sem se k tomu zase nahodne dostal a koukam ono to ma pres mega sheldnuti a je to cech :D ... no nic, tohle pokud se mi vysledek podari dostat az do UE4 tak to bude super. Diky moc za info ohledne meshroom!

[@wogalwogal]

this is Awesome thank you for taking the time to make this video

[@vejymonsta3006]

Yes meshroom is great! I tried to use meshroom at work to create a reference model of a complex assembly, but management was too stupid to understand why it was necessary. Let's just say the original documentation was useless for building something with thousands of parts. A 3D model of the entire assembly could've been built with photogrammetry in a couple of days, then distributed to every assembler for reference. NASA did something similar for their space craft where they always built two of everything. Photogrammetry is a much more affordable alternative to this.

[@fundatufan1678]

so good for new beginners! thank you!

[@pazcentral]

Thanks Josef always sharing your knowledge ;D !

[@movsesmovsesyan8231]

This looks really cool

[@RVS_3D]

Great video

[@TechTroppy]

Thanks a lot it's exactly what i was looking for.

[@arloc_official]

great video for more advanced scanning!

[@MichelBricole]

Awesome, thank you for your great work!

[@nickname7828]

Is there any way to use this technology with an older mac? i have a MacBook Pro (13-inch, 2017, Two Thunderbolt 3 ports) All Photogrammetry programms ive tried wont work with my system. Very grateful for any tips, or programms that i could use

[@gmt1]

For symmetrical objects, you can save time by taking photos of one side and mirroring it in post.

[@Prusa3D]

Good tip!

[@JerryFisher]

I love doing photogrammetry. The only thing that I wish was different is that there were more software that runs natively on a Mac. I know Macs are a smaller part of the overall market. Before anyone says "Get a Windows machine!" I'm planning on adding an Nvidia card to my Mac Pro and make my hard drive dual boot to have both macOS and Windows. I just know Mac better than Windows right now.

[@spikekent]

Awesome, will have to give this a try soon. Great work guys

[@BrickDesignerNL]

New version available github.com/alicevision/meshroom/releases/tag/v2019.2.0 See github.com/alicevision/meshroom/releases/ to always find the latest version.

[@TechnicallyaNomad]

Glad someone else also loves Dvorak! Got a favorite symphony?

[@iantaylor1341]

I look forward to prusa’s insight on the new iPhone lidar capability to do this

[@avejst]

Thanks for updating this :-)

[@mohammedinnat8995]

Amazing. Thanks for sharing. Just looking for something like this.

[@AshLordCurry]

Dannng thoses shoot, so pleasant to watch

[@PrimiusLovin]

The traditional way of 3D modeling real-world objects is time consuming, so an automated, easy and affordable way of using photogrammetry that reduces production times where 3D modeled objects are used is a good thing.

[@pandaDotDragon]

6:10 CUDA only >

[@moclan582]

Same... Killed it for me

[@zachmoir]

Thankfully I have Nvidia

[@mauriciolima1088]

fuck

[@JohnWick-hj4ep]

😢😢😢

[@elukok]

Yeah, dont get why developers use something stupid as cuda when there are free open source alternatives that work on any GPU.

[@MikeyFirst]

Thanks! Will try the software again sometime.

[@KoMaHu3aM]

keeping those algorithms happy

[@ipodtouch470]

Props to give james maxwell the respect he deserves

[@poolec404]

Hi Josef, would love to see that 3d sculpting episode! (especially with Blender and 3d printing in mind).

[@Prusa3D]

Blender 2.8 all the way!

[@crazyskull88]

This was very good explanation of the mesh program I definitely give it a try since it has been updated.

[@abhinavsivakumar6403]

Isit possible to put an object on a turntable and ensure the base is visibly turning with the object? If not what is the best way to keep the camera still and still scan well?

[@calseynez]

the software doesn't work like that. like other scanners, for example, the LMI HDI 3D scanner we have at the lab. that one is stationary and you can scan with the object is moving. the software is able to read the pixels and understand where each shape is picked up and knows the surface differences. For photogrammetry, however, does not have the feature. Your only using a phone camera and regular camera to take pictures in different background. the devices do not have that attachment and the software is not program for it. It is the cheapest way for the grammetry to do 3d models. but it has certain limits of what it can and cannot do. but if it's the one your asking such as a stationary camera with a round table. there are other devices that can do that but a bit pricey. Or other electronics of how to make one yourself is another way.

[@abhinavsivakumar6403]

@@calseynez oh thanks for the info appreciate the details!

[@Prusa3D]

It's even mentioned in the video ;) kzbin.info/www/bejne/Z3WTdpuJnpKprMU

[@MaxerDoesMC]

Holy cow that is awesome!

[@kazansky22]

I really want to do this with an airplane to get a good model for CFD simulations.

[@daveys]

I was thinking of using drone for photogrammetry. Years since I did any photogrammetry and it was all manual measurements when I last did it.

[@dudeabides23]

We've been doing it since WW2. Probably the most common photogrammetry

[@daveys]

@@dudeabides23 - Indeed. I learnt photogrammetry from a guy called Sid Ray, who I suspect had a fair bit to do with military photographic interpretation around that time.

[@3DJapan]

I've tried Meshroom because I wanted to do a tutorial on it but I found it complicated and really had trouble getting good results. These days I use Reality Capture. It's not free but pretty cheap.

[@salesmeltingmints701]

Awesome video, very informative

[@echelon2k8]

8:08 Did you try and fail to make these the same size or did you deliberately make your copy a little bit larger than the original?

[@Prusa3D]

Getting the scale of a scan right can be a bit tricky with organic shapes like figures, we didn't focus on it that hard here, so we got it slightly wrong. Generally all scans will be in "random" scale and you have to meassure something on the real object and rescale the scan to match that dimension.

[@RonFloyd]

Excellent - very much worth a visit.re-visit! Thanks!

[@Just_Jesus_ef]

Thanks for this tutorial. I will give it a try

[@Prusa3D]

Have fun! Once you try it, you'll see photogrammetry opportunities everywhere :)

[@DingDongDrift]

my scan keeps stopping at depth map and won't continue the reconstruction, what am i doing wrong?

[@DingDongDrift]

oh it doesn't work with AMD GPUs, that's a huge let down...

[@Prusa3D]

Yeah :( Current info from Meshroom's wiki "Currently, we have neither the interest nor the resources to do another implementation of the CUDA code to another GPU framework. If someone is willing to make this contribution, we will support and help for integration.*"

[@DingDongDrift]

@@Prusa3D damn that sucks...

[@0x53v4k]

OpenCL support, please.

[@kyledoll2869]

the WOW at the beginning though

[@morningsidetattoo]

Thank you for this tutorial!!!

[@jackaguirre8576]

What if you need the bottom of the figure? Can you flip it over and take pictures or is that not gonna work?

[@Prusa3D]

It would work in a controlled enviroment (white background). The easieast solution would be to place the figure on some tall pillar (or glue it to a skewer) so that you can easily capture photos from the bottom as well. -Mikolas

[@OrlovIV]

never seen meshroom worked corretly

[@theannoyedmrfloyd3998]

Cosplayers could be photographed for figures this way. Oooh!

[@FilipBrowny]

I doubt its possible since the object needs to be perfectly still during photoshooting

[@Ixpiria31]

i am amazed

[@JulesL_82]

Somedody might suggest a blog, forum or fb channel where to talk about meshroom, and ask suggestions? I tried some attempts but i can't get a mesh done, and I don't know where is the problem:( thanks! This is a very well done video and thanks :)

[@echtvergoldet]

Imagine how far we will have come in 20 years. Conveniently scanning everything within seconds with our "phones", if they are still called like that in the future.

[@pirobot668beta]

I've used PG on old footage from movies or documentaries... Comparing the models made from old footage with models made of the same scene with newer footage reveals subtle changes in shape. Besides buildings and construction, it is fun to see a hillside 'heave' during the rainy season and 'shrink' by the end of summer. Sure, it's only a few feet out of thousands of cubic yards, but is can be measured! Similar things are seen with Grand Canyon footage; old fly overs and newer ones show lots on interesting 'shifts' in form. Are volcanologists using this?

[@CapitanRender]

How well explained! Subscribed..I would like to see a next video with a drone capture of an urban space.

[@werewolf4259]

Finally! Real technology

[@Rikalonius]

Can you use a turntable, a fixed camera, and a light box, or is this no better than moving the model?

[@enricoenry9502]

Thank you very much for your review!

[@femtohimself71]

1:23 are those .PNG files ? (the starfish)

[@leibargruiz5307]

Love this !

[@stephenfoster2532]

He touches on it in the video, but the single most important thing you can do to achieve high-quality results is to use a good camera. Yes, you can get good results with a Gopro, cellphone or point and shoot cameras, but if you compare a model generated from a GoPro to a model from a DSLR/mirrorless camera using a good prime lens, the results from DSLR are absolutely superior. When comparing models between lower-end cameras and high-end cameras, look at sharp corners/edges, photogrammetric reconstruction with lower-end cameras struggle to produce sharp corners, they come out more round. If possible, use a full-frame camera. Make sure you move between shots, no standing and pivoting. Take steps in between photos. Take the photos in a systematic way: go low, medium, and high all the way around. For tall structures, you can also scan vertically (take photos as you move up the structure, scoot over a bit then come back down until the whole thing is covered). You want to disable autofocus as it causes focus changes between photos and will cause pixel blur when the algorithm looks at different photos of the same feature. Set focus to infinity and leave it there. You want to achieve high overlap between successive pictures, both vertically and horizontally (like 70% to 80% overlap). More overlap means more matched features means a more dense point cloud which means a tighter mesh. If you want to know how good a job the software is doing with your photos, turn the textures off and look at the raw surface. The texture hides lots of artifacts. Use a fast shutter speed as well to take motion blur out of shots if your shooting by hand and not with a tripod (this is especially important if shooting from a drone). Use a polarizing filter to help reduce glare if shooting outdoors. Like hard shadows, the software struggles with how to handle it. Post-process your photos to increase contrast in shadowed areas.

[@razorpit]

So this was 3 years ago. What has changed since? Are these still the best options?

[@razorpit]

And are there better options with iOS devices and the LiDAR they now have?

[@Voyajer.]

@@razorpit for ios and Android you want polycam probably. It uses lidar on devices that have it but it's not free if you want to export your models.

[@razorpit]

@@Voyajer. thank you.

[@PraxisNeikoz]

Buen tutorial, didactivo y claro al explicar!

[@DonKiwi87]

Would this work with a water fountain? Or will the water movement spoil the end image? Anyway great technology!!

[@saminiemi2749]

I need to try this :) Have you tried a turntable on a white background? Turntable would allow the (easier) use of camerastand and keep the distance and the tilt angle to the object fixed. Combine this with steppermotor on on turning table and you could also get the turning rate controlled. Like 10°per turn.

[@Prusa3D]

Non-white background worked better for us, but we've seen some people have success with white bg and a turntable. :) Though the environment was very controlled, strong flash overexposing the white, cross polarizing the light to reduce glare etc. Partially covered at 3:42 -Mikolas

[@saminiemi2749]

@@Prusa3D Yes, looked further on this and there are methods to make this work using random/uneven pattern on the turntable to help the program on the positioning and having dark background.

[@gerardolegend]

Yay!!! ❤❤❤😍