SoftRas 是目前主流三角网格可微渲染器之一。
可微渲染通过计算渲染过程的导数,使得从单张图片学习三维结构逐渐成为现实。可微渲染目前被广泛地应用于三维重建,特别是人体重建、人脸重建和三维属性估计等应用中。
安装
conda
安装 PyTorch 环境:
conda create -n torch python=3.8 -y
conda activate torch
conda install pytorch torchvision torchaudio cudatoolkit=11.1 -c pytorch -c nvidia -y
conda activate torch
python - <
获取代码并安装:
git clone https://github.com/ShichenLiu/SoftRas.git
cd SoftRas
python setup.py install
可设 setup.py
镜像源:
cat < ~/.pydistutils.cfg
[easy_install]
index_url = http://mirrors.aliyun.com/pypi/simple
EOF
应用
安装模型查看工具:
snap install ogre-meshviewer
或
snap install meshlab
渲染物体
渲染测试:
CUDA_VISIBLE_DEVICES=0 python examples/demo_render.py
渲染结果:
对比前后模型:
ogre-meshviewer data/obj/spot/spot_triangulated.obj
ogre-meshviewer data/results/output_render/saved_spot.obj
Mesh 重建
下载数据集:
bash examples/recon/download_dataset.sh
训练模型:
$ CUDA_VISIBLE_DEVICES=0 python examples/recon/train.py -eid recon
Loading dataset: 100%|██████████████████████████| 13/13 [00:35
测试模型:
$ CUDA_VISIBLE_DEVICES=0 python examples/recon/test.py -eid recon \
-d 'data/results/models/recon/checkpoint_0250000.pth.tar'
Loading dataset: 100%|██████████████████████████| 13/13 [00:03
Mesh 重建:
获取 softras_recon.py
进 examples/recon/
https://github.com/ikuokuo/start-3d-recon/blob/master/samples/softras_recon.py
注释 iou
直接返回 0,位于 examples/recon/models.py
evaluate_iou()
2D 图像重构 3D Mesh
CUDA_VISIBLE_DEVICES=0 python examples/recon/softras_recon.py \
-s '.' \
-d 'data/results/models/recon/checkpoint_0250000.pth.tar' \
-img 'data/car_64x64.png'
ogre-meshviewer data/car_64x64.obj
重建图像:
重建结果:
或重建 ShapeNet 数据集内图像:
mesh recon images of ShapeNet dataset
CUDA_VISIBLE_DEVICES=0 python examples/recon/softras_recon.py \
-s '.' \
-d 'data/results/models/recon/checkpoint_0250000.pth.tar' \
-imgs 'data/datasets/02958343_test_images.npz'
或使用 SoftRas 训练好的模型:
- SoftRas trained with silhouettes supervision (62+ IoU):google drive
- SoftRas trained with shading supervision (64+ IoU, test with
--shading-model
arg):google drive - SoftRas reconstructed meshes with color (random sampled):google drive
更多
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Original: https://www.cnblogs.com/gocodinginmyway/p/14902142.html
Author: GoCodingInMyWay
Title: 可微渲染 SoftRas 实践
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