Comments (3)
thank you very much for the detailed answer!, definetly will try those, at least the blender options (2,4) since is the tool that i have knowledge,
from flownet2.
Hi,
good question and I have thought about it a little. I see 4 general possible paths to take to get to 3D vectors:
- Use a renderer that produces 3D vectors (well, obviously). I don't have a great overview (it's been a while since we did our dataset) but I heard RenderMan may support this better than others.
- Do as we did and hack support for 3D position outputs into a renderer of your choice. We used Blender Internal which is not a great choice otherwise, but it was possible to add custom render passes and data storage without blowing up the entire engine. This renderer's ability to shift the scene time index independently of its own render data storage was key; we needed to be able to re-identify each vertex over time.
- You can bake a "3D position" texture for every surface, then render different time frames with that texture. This concept is a ton of overhead because you basically need to re-bake every texture for every object in every time frame, and the texture resolution directly affects your data accuracy. On the upside, it is a universal concept that should be independent of the renderer.
- Use the builtin 2D speed vector and Z passes of a renderer, then postprocess to get 3D vectors. This is limited to surface points which are visible in both the source and target frames, and bears risks of "false positive" matches, but at least in Blender this works out of the box (given that the 2D pass output is accurate) and is fast (you don't need multiple renders).
(2.) is a lot of effort and probably doesn't work for every renderer. (3.) is inefficient and numerically not perfect. (4.) is limited to non-occlusion areas.
from flownet2.
If you find other options or run into interesting Blender problems, I'm always interested in details! ;)
from flownet2.
Related Issues (20)
- train.prototxt for flying chairs HOT 2
- Generating .prototxt files HOT 2
- Check failed: mdb_env_open(mdb_env_, this->layer_param_.data_param().source().c_str(), 0x20000|0x200000, 0664) == 0 (2 vs. 0) mdb_env_open failed HOT 3
- diagonal filler in Flownet_S deploy HOT 2
- How can I test dataset with png format? HOT 8
- Confused about the FlyingThings3d dataset HOT 2
- Mean layer question HOT 1
- Train dataset HOT 2
- Data augmentation parameter HOT 10
- weight distribution for deconv layer HOT 4
- data augmentation horizontal flip HOT 5
- Shadow suppression HOT 1
- how to generate optial flow .flo and .rflo files? HOT 2
- [libprotobuf ERROR C:\ci\libprotobuf_1523040574637\work\src\google\protobuf\text_format.cc:288] Error parsing text-format caffe.NetParameter: 524:15: Message type "caffe.LayerParameter" has no field named "irnn_param" HOT 1
- Can we set this up on Google Colab? HOT 2
- Models from download-model.sh HOT 4
- Dataloader for loading images HOT 2
- High error rate for KITTI 2015 Training dataset HOT 1
- Error parsing text-format caffe.NetParameter. But I can't find scripts folder in /home/user/caffe/build. HOT 1
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from flownet2.