iPUNet:代交叉场指导点云上采样
IEEE transactions on visualization and computer graphics
|October 19, 2023
概括
在这个年龄里,一个叫做iPUNet的新方法来改善3D图像的真实性. 这种方法,更频繁,更杂的点云更密集,更正确地形成了它们的几何特征,从而更好地捕捉它们.
科学领域:
- 计算机视觉 计算机视觉
- 计算机图形 计算机图形
- 几何深度学习 几何深度学习
背景情况:
- 3D扫描设备产生稀疏,杂和不均的点云.
- 这种数据退化导致关键几何特征的损失.
- 现有的方法很难从这些不完美的数据中有效地重建详细的几何形状.
研究的目的:
- 推出基于学习的点上采样方法iPUNet.
- 以任意的比率产生密集,均和特征感知点云.
- 为了提高点云对下游应用的可用性.
主要方法:
- 在这个年龄里,一个叫做iPUNet的新方法来改善3D图像的真实性. 这种方法,更频繁,更杂的点云更密集,更正确地形成了它们的几何特征,从而更好地捕捉它们.
- 自主监督学习的交叉场与利的几何特征对齐指导点生成.
- 在每个输入点学习一个局部参数化的表面,用于任意比率提升样本.
- 一个代的改进策略解决了输入点的不均性,通过将点分布在连续的3D表面上.
主要成果:
- 在这个年龄里,一个叫做iPUNet的新方法来改善3D图像的真实性. 这种方法,更频繁,更杂的点云更密集,更正确地形成了它们的几何特征,从而更好地捕捉它们.
- 该方法有效地产生了密集和均的点云,保留了利的几何特征.
- 在这个年龄里,一个叫做iPUNet的新方法来改善3D图像的真实性. 这种方法,更频繁,更杂的点云更密集,更正确地形成了它们的几何特征,从而更好地捕捉它们.
- 评估显示了对杂和不统一的输入数据的稳定性.
结论:
- 在这个年龄里,一个叫做iPUNet的新方法来改善3D图像的真实性. 这种方法,更频繁,更杂的点云更密集,更正确地形成了它们的几何特征,从而更好地捕捉它们.
- 在这个年龄里,一个叫做iPUNet的新方法来改善3D图像的真实性. 这种方法,更频繁,更杂的点云更密集,更正确地形成了它们的几何特征,从而更好地捕捉它们.
- 在这个年龄里,一个叫做iPUNet的新方法来改善3D图像的真实性. 这种方法,更频繁,更杂的点云更密集,更正确地形成了它们的几何特征,从而更好地捕捉它们.
相关概念视频
01:22Upsampling
242
Managing signal sampling rates is essential in digital signal processing to maintain signal integrity. A decimated signal, characterized by a reduced frequency range due to its lower sampling rate, can be upsampled by inserting zeros between each sample. This upsampling process expands the original spectrum and introduces repeated spectral replicas at intervals dictated by the new Nyquist frequency. To refine this zero-inserted sequence, it is passed through a lowpass filter with a cutoff...
242
01:20Downsampling
167
When considering a sampled sequence with zero values between sampling instants, one can replace it by taking every N-th value of the sequence. At these integer multiples of N, the original and sampled sequences coincide. This process, known as decimation, involves extracting every N-th sample from a sequence, thereby creating a more efficient sequence.
The Fourier transform of the decimated sequence reveals a combination of scaled and shifted versions of the original spectrum. This...
The Fourier transform of the decimated sequence reveals a combination of scaled and shifted versions of the original spectrum. This...
167
01:25Methods of Obtaining Topography
69
Topography involves measuring and mapping land elevations, natural features, and artificial structures to create accurate representations of the terrain. Topographic surveying relies on traditional and modern methods, each with distinct advantages and limitations.Traditional Surveying Methods:Transit stadia surveys and plane table surveys were widely used traditional surveying methods. These techniques relied on instruments like theodolites and stadia rods for measuring distances and angles,...
69
01:20Cluster Sampling Method
12.0K
Appropriate sampling methods ensure that samples are drawn without bias and accurately represent the population. Because measuring the entire population in a study is not practical, researchers use samples to represent the population of interest.
To choose a cluster sample, divide the population into clusters (groups) and then randomly select some of the clusters. All the members from these clusters are in the cluster sample. For example, if you randomly sample four departments from your...
To choose a cluster sample, divide the population into clusters (groups) and then randomly select some of the clusters. All the members from these clusters are in the cluster sample. For example, if you randomly sample four departments from your...
12.0K