神经辐射场渲染体密度的技术已经在新视角合成的任务上取得了出色的效果,但是其中的体密度的预测效果不那么完美,容易出现噪点、低保真的几何近似形状。于是作者提出了 VolSDF 帮助设计一个更完善的模型,使得不仅能够保持出色的新视角合成,也能在几何近似方面更高质量、更接近真实场景。 [Figure1](https://arxiv.org/...
想要有理想的 Warping-based loss 需要有近似合理的 geometry,所以在训练过程的一开始并没有添加 Warping-based loss,而是用标准的 VolSDF 训练过程先训练 100k iterations,再 finetune geometry network 50k iterations。 Warping-based loss 确实很大程度上提升了重建效果,但渲染过程计算开销巨大,计算 valid mask 非常...
To overcome these limitations, we introduce a novel, generalizable 3DGS-based pre-training paradigm, called UnitedVLN, which enables agents to better explore future environments by unitedly rendering high-fidelity 360 visual images and semantic features. UnitedVLN employs two key schemes: search-then-...
based 3D representation with a style-based 2D generator. Our 3D implicit network renders low-resolution feature maps, from which the style-based network generates view-consistent, 1024×1024 images. Notably, our SDFbased 3D modeling defines detailed 3D surfaces, leading to consistent volume rendering...
Stand-alone GPU-based signed distance field generator from 3D triangle meshes. Used in Armory, written in Haxe and Kha. Run Takes mesh.obj file and outputs raw 50x50x50 (50x2500) volume of floats into out.bin. This volume can be loaded into a 3D texture using R32/R16 format. git clon...
Subsequently, we synthesize color images and depth maps with SDF-based volume rendering. Additionally, we implement an error-guided importance sampling strategy, which directs the network's focus towards areas that are not fully optimized during training. Comparative analysis on multiple public datasets...
[41] or bilateral filtering [39]. The frame bounding volume is automatically estimated by back-projection of all depth map pixels, as opposed to model-based methods that require manual volume selection. The volume is then slightly padded and used for the generation of both SDFs that are ...
and has chemokine or fugetactic activity. Such sequence identity is based on the replacement of a first amino acid with a known conservative second amino acid. Such conservative replacements are well established in the art and the testing of the resulting modified CXCL12 polypeptide for its fugetac...
Note that methods such as [20, 42] focus on deformable objects and the root 6-DoF tracking and fusion are often based on [43], whereas we focus on rigid objects that are dynami- cally moving. We thus omit their comparisons. The inputs to each evaluated...
We first optimize a hybrid neural volume-surface scene representation designed to have well-behaved level sets that correspond to surfaces in the scene. We then bake this representation into a high-quality triangle mesh, which we equip with a simple and fast view-dependent appearance model based ...