Fix Holes in Photogrammetry With Blender: How To Repair Bad Photo-Scans
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- เผยแพร่เมื่อ 6 มิ.ย. 2024
- A Blender Photogrammetry tutorial! I'll show you how to fix holes and repair bad meshes in photo-scanned models in this video.
Photogrammetry is used to produce 3D models from images, but occasionally the finished product may have holes or other errors that need to be repaired. In this tutorial, we'll use Blender, a well-known 3D modelling programme, to fix these issues and produce a top-notch 3D model from a photo-scan.
Now, we'll import our photo-scan model into Blender and check for any holes or broken meshes. The model will then be repaired and a clear, smooth surface will be produced using a variety of methods and tools, including filling, the knife tool, sculpting brushes and much more.
Join us for this Blender Photogrammetry tutorial to discover how to fix holes and defective meshes in your 3D models if you want to enhance the quality of your photo-scanned models. To get more tutorials on Blender and other 3D modelling applications, don't forget to subscribe to our channel.
If you would like to support me on this channel, then please consider buying the model from this tutorial: www.cgtrader.com/3d-models/ex...
CONTENT OF THIS VIDEO TUTORIAL
0:00 Intro
0:24 Importing Photo-Scan (Meshroom)
0:55 Rotating Model
2:05 Examining Model
2:24 Cleaning up Photogrammetry Model
4:54 Exporting Model to Instant Meshes
8:14 Re-import Instant Mesh model into Blender
9:50 Remove & Clean Low-Poly Mesh
12:02 Repairing Holes in Mesh
15:55 Unwrap Low-Poly Model
21:34 Adding a Shader
22:06 Baking the Textures
24:36 Connecting the Baked Textures
26:16 Improve Repairs With Sculpting
28:48 Repairing Holes in Textures
32:13 Smoothing the Edges
35:53 Setting the Origin Point - แนวปฏิบัติและการใช้ชีวิต
Extremely on point tutorial! Clear and not full of bs!
Well done my friend. Good tutorial!
Great tutorial, very clear and helpful.
this is the best video I ever saw about clean retopology
Excellent Video. Thank you.
Very useful and thank you so much
Very good tutorial! 🙏
Really good tutorial, thank you.
Very Helpful...Thanks for this video...Keep it Up...
awesome job! helped me a lot my man!
Thanks so much for this tutorial. What I appreciate about this tutorial is how you say exactly what you are doing. Thank you
You are welcome. I hope you go on to create plenty of great photogrammetry models.
great tutorial!
Clear , clever and efficient;
Subscribed!! Love this video - 13 Years ago I was pretty good with MAYA but now that I'm into photogrammetry (landscape, and automobiles mostly) I'm having to relearn a lot of basics . . . this is exactly what I needed!! Thanks so much.
Awesome! Thank you!
amazing stuff learned a lot
Thank you very much!
One of the most usefull tutorial I've ever seen
Wow, thanks!
Thank you!!! Just started with Photogrammetry, this has answered so much, feel a really useful tutorial, for someone who is just stepping from beyond the basics on a few area's of 3d modelling!
Glad it was helpful!
Excellent!
Thank you so much for this!
You're so welcome!
Fantastic tutorial. I'm an industry pro of many years (mainly concept art and matte painting), and for some reason, retopology has held a special fear for me. I can see me working this easily into the Blender part of the pipeline.
Bravo, sirrah.
Subscribed
Thanks for this. You have made my day with this comment!
hi, great tut. you can try quadfill to dill the holes with quads
Quad fill does work well most of the time. But not always, especially when the geometry is jagged and inward facing. It's good to know how to split up geometry manually. Please don't forget to like and share. Thanks for the tip! If you have any suggestions for the next video, please feel free to let me know.
Hi i find something that can help sometimes and is use the key "H" to hide mesh in edit mode to only work in the sectioni that you want, also you can show all again using "alt+h"
Absolutely. Not only does this method make it easier to see what you are working on, but it also frees up a little ram and makes for a smoother experience. Thanks for sharing.
thank you
You sound like the guy in the background when watching winnie the pooh haha legend
;)
Attenborough ;)
thanksss alotttt
Tip to find where in the mesh a UV section relates to: There's a button called "UV Sync Selection" in the top left of the UV editor (It's two diagonal arrows going in opposite directions next to the select mode) that keeps UV and edit mode mesh selection in sync so you can click faces in your UV and it will light up on the mesh.
I didn't know that. I have learn't something new. Many thanks.
My I ask about your workflow if Instant meshes looks fine at solve but then shatters the mesh into many pieces upon clicking extract? Thank you for your excellent tutorial!
If u are using any photogrammetry software, instead of texture painting you can also import fixed mesh back to that software and try texture reprojection or texture whole model again.
I like the sound of that. I will try it out. Thanks for the tip.
Hi, thanks for this tutorial, i need to ask you something, im having some problems.. After connecting the color node to the base color, certain parts of my model do not match, that is, the color that is applied in some areas does not correspond to those, it is as if it were smeared, it duplicated some parts in a certain way. What could be wrong?
I decided to make my 3d model again, but now, i made it with meshroom (previously using metashape). With that model i started the tutorial again, and now i dont have the same problem. I just needed some time and to re do some steps from the beginning. Thanks againg for this!
Is David Attenborough making tutorials now?
Haha! I see what you mean, now you come to mention it.
Great help for me as a beginner. Is there a way to mirror one half of a capture to create a whole image, I.e. I scanned my airplane using Polycam…..I captured the left side pretty well with few minor holes, but the right side of plane looks like it’s stretched across multiple dimensions. If I could mirror left side then I think I’d have a complete model to touch up and work with. FYI…I’m a compete newb….and know little to nothing about blender. Ty
I like the fact you have an airplane! I would place a large cube over the rough half, and perform a boolean on it to cut it out cleanly. Then, making sure that the reference point is in the middle, add a mirror modifier. Let me know how you get on.
@@blenderbones thanks I tried the Boolean trick and it worked great.
Excellent! If you want the perfect model, try retopologizing it over the existing model, and then bake the textures from the old to the new. It will take a long time, but you will have the perfect model.@@GrummanCheetahPilot
Hi may i know how to export .obj file from blender to context capture master (bentley)? I've tried but it doesn't seem to work. It came out blank on bentley. Thanks!
Take a careful look at the settings on the export dialogue box. It could be that you have "Selected only" checked.
i need to know if i want to 3d print this and i want all the detail can i convert low resolution to high resolution or it's not possible?
That's a good question. I am not too sure. You might want to investigate the Displacement Modifier. You might be able to do something with that. Anyone else got any thoughts?
almost thought i was watching a animal documentry
Here, in the grasslands of Kenya...;)
I was doing the image bake yesterday and it was working, there were just some errors with the uv map. so i went into zbrush and re-UVed and re imported into blender. but now it just give me a black image texture. any advice?
i literaly spent a whole day trying to fix it. its the metalic its gotta be at 0.
@@kealinit7052 (I am the author of this video...just signed into a different account.) I am glad you got it working. You beat me to it. Thanks for watching the video and please share!
I'm running into the unfortunate issue where when I bake following all of the steps shown here, I get a blank checkered background in the image editor. I have triple checked all of my settings relative to the tutorial. I have ensured that I have High Res selected first, followed by Low Res, and I've ensured I have "Diffuse" deleted in the Shader node editor. No idea what's going on. Any thoughts? Editing to clarify I am on "Version 4.1.0 (4.1.0 2024-03-26)".
I think I finally tracked it down after a lot of headache... I changed my view Render samples to 8, not my actual render samples to 8.While my "bake" was completing, my only theory is that it was so unreasonably large that it didn't bake properly.
So sorry I missed this comment. I'm glad you got it sorted.
pourquoi avec tout le monde ca marche et pas avec moi ?
where can i find instant meshes
Here we go (better late than never!) github.com/wjakob/instant-meshes
The voice filter lmao 😂
Caught me out ;)
It's depressing that in 2023 3d software is still so primitive that so much manual cleanup is required.
Thats just how it is when you try to convert anything in real life into digital world
the fact that we can turn some pictures into 3d models is already insane
@@Galllam01 "Thats just how it is" - you've been conditioned by lazy software to think this way, there's no reason why modern ML techniques and even regular advanced hand-coded algorithms wouldn't be able to do 99% of the work cleaning up meshes.
Scan software I'd extremely complex. Vertices are aligned on the fly based on pattern tracking. The fact that a computer can record this data and align it is pretty impressive and takes a lot of compute power. Not to mention it relys on human control. (Hardly perfect.)
gandalf making blender tutorials in 2023 fr
like watching a dentist work
I hope you're not saying it's like pulling teeth ;)
bro is this gandalf??
You shall not pass! ;)
Hi, I sorry but several times I treid to stop and to find an detail WHAT you are clicking and WHY it does not look the same on my PC. For me, being a beginner, you talk MUCH (!!) to fast and you dont show WHERE to click. Maybe I am not the only one, not knowing "out of x-ray mode" ... Sorry... If this should be a tutorial, one should be able to follow, is my opinion. 😊
Thanks for the feedback. The problem is, if I talk slowly, people complain. If I describe everything I am doing, I talk too much. It is a tricky balance to make. I know that these tutorials will not suit everyone. However, you can slow down or speed up TH-cam videos. This has helped me a lot in the past get the best pace for my learning.
No offense but your voice was a jumpscare
Boo!