pointnet | PointNet: Deep Learning on Point Sets for 3D Classification and Segmentation | Machine Learning library

 by   charlesq34 Python Version: Current License: Non-SPDX

kandi X-RAY | pointnet Summary

kandi X-RAY | pointnet Summary

pointnet is a Python library typically used in Institutions, Learning, Education, Artificial Intelligence, Machine Learning, Deep Learning, Pytorch, Tensorflow applications. pointnet has no vulnerabilities and it has medium support. However pointnet has 2 bugs, it build file is not available and it has a Non-SPDX License. You can download it from GitHub.

This work is based on our arXiv tech report, which is going to appear in CVPR 2017. We proposed a novel deep net architecture for point clouds (as unordered point sets). You can also check our project webpage for a deeper introduction. Point cloud is an important type of geometric data structure. Due to its irregular format, most researchers transform such data to regular 3D voxel grids or collections of images. This, however, renders data unnecessarily voluminous and causes issues. In this paper, we design a novel type of neural network that directly consumes point clouds, which well respects the permutation invariance of points in the input. Our network, named PointNet, provides a unified architecture for applications ranging from object classification, part segmentation, to scene semantic parsing. Though simple, PointNet is highly efficient and effective. In this repository, we release code and data for training a PointNet classification network on point clouds sampled from 3D shapes, as well as for training a part segmentation network on ShapeNet Part dataset.
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            kandi-support Support

              pointnet has a medium active ecosystem.
              It has 4203 star(s) with 1403 fork(s). There are 134 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 171 open issues and 126 have been closed. On average issues are closed in 109 days. There are 4 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of pointnet is current.

            kandi-Quality Quality

              pointnet has 2 bugs (0 blocker, 0 critical, 2 major, 0 minor) and 60 code smells.

            kandi-Security Security

              pointnet has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              pointnet code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              pointnet has a Non-SPDX License.
              Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

            kandi-Reuse Reuse

              pointnet releases are not available. You will need to build from source code and install.
              pointnet has no build file. You will be need to create the build yourself to build the component from source.
              Installation instructions, examples and code snippets are available.
              pointnet saves you 1496 person hours of effort in developing the same functionality from scratch.
              It has 3336 lines of code, 198 functions and 22 files.
              It has high code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed pointnet and discovered the below as its top functions. This is intended to give you an instant insight into pointnet implemented functionality, and help decide if they suit your requirements.
            • Train the model
            • Write the properties to the binary stream
            • Write the document to a given stream
            • Write the data to the given binary stream
            • Get the model for the given point cloud
            • Convert euler to angle
            • Convert euler to quaternion
            • Convert angle to euler
            • Convert a matrix to euler
            • 1d convolution layer
            • Batch normalization for convolutions
            • 3d convolutional layer
            • Convert a quaternion to Euler
            • Convert a bounding box label to a file
            • Helper function for room2blocks
            • Convert a NumPy array to fields
            • Read data from binary stream
            • Convert a list of points into a single volume
            • Convert a labeled point label to a file
            • Transpose input tensor
            • Convert a bounding box label to an object room
            • Get a model from a point cloud
            • Collects the bounding box bounding box
            • Collect point labels from anno_path
            • Collect bounding box from annotations
            • Insert data into batch
            • Evaluate the model
            Get all kandi verified functions for this library.

            pointnet Key Features

            No Key Features are available at this moment for pointnet.

            pointnet Examples and Code Snippets

            JSNet: Joint Instance and Semantic Segmentation of 3D Point Clouds ,Usage
            Pythondot img1Lines of Code : 31dot img1License : Permissive (MIT)
            copy iconCopy
            cd models/JISS/
            ln -s ../../data .
            
            # training
            python train.py \
            --gpu 0 \
            --data_root ./ \
            --data_type numpy \
            --max_epoch  100  \
            --log_dir ../../logs/train_5 \
            --input_list data/train_file_list_woArea5.txt
            
            # estimate_mean_ins_size 
            python estimat  
            Pointnet++ tensorflow 2.0 layers,Usage
            C++dot img2Lines of Code : 30dot img2no licencesLicense : No License
            copy iconCopy
            import tensorflow
            from pnet2_layers.layers import Pointnet_SA
            
            class CLS_SSG_Model(tf.keras.Model)
            
              def __init__(self, batch_size, activation=tf.nn.relu):
                super(Pointnet2Encoder, self).__init__()
            
                self.batch_size = batch_size
            
                self.laye  
            S3DIS scene parsing:
            Pythondot img3Lines of Code : 24dot img3License : Permissive (BSD-2-Clause)
            copy iconCopy
            @misc{xu2021group,
                  title={You Only Group Once: Efficient Point-Cloud Processing with Token Representation and Relation Inference Module}, 
                  author={Chenfeng Xu and Bohan Zhai and Bichen Wu and Tian Li and Wei Zhan and Peter Vajda and Kurt   
            dgl - train partseg-pytorch-pointcloud-pointnet
            Pythondot img4Lines of Code : 271dot img4License : Non-SPDX (Apache License 2.0)
            copy iconCopy
            import argparse
            import os
            import time
            import urllib
            from functools import partial
            
            import numpy as np
            import torch
            import torch.nn as nn
            import torch.nn.functional as F
            import torch.optim as optim
            import tqdm
            from pointnet2_partseg import PointNet2MS  
            dgl - provider-pytorch-pointcloud-pointnet
            Pythondot img5Lines of Code : 182dot img5License : Non-SPDX (Apache License 2.0)
            copy iconCopy
            """
            Adapted from https://github.com/yanx27/Pointnet_Pointnet2_pytorch/blob/master/provider.py
            """
            import numpy as np
            
            
            def normalize_data(batch_data):
                """Normalize the batch data, use coordinates of the block centered at origin,
                Input:
                    
            dgl - Shape Net-pytorch-pointcloud-pointnet
            Pythondot img6Lines of Code : 143dot img6License : Non-SPDX (Apache License 2.0)
            copy iconCopy
            import json
            import os
            from zipfile import ZipFile
            
            import numpy as np
            import tqdm
            from scipy.sparse import csr_matrix
            from torch.utils.data import Dataset
            
            import dgl
            from dgl.data.utils import download, get_download_dir
            
            
            class ShapeNet(object):
                 

            Community Discussions

            QUESTION

            Using RNN Trained Model without pytorch installed
            Asked 2022-Feb-28 at 20:17

            I have trained an RNN model with pytorch. I need to use the model for prediction in an environment where I'm unable to install pytorch because of some strange dependency issue with glibc. However, I can install numpy and scipy and other libraries. So, I want to use the trained model, with the network definition, without pytorch.

            I have the weights of the model as I save the model with its state dict and weights in the standard way, but I can also save it using just json/pickle files or similar.

            I also have the network definition, which depends on pytorch in a number of ways. This is my RNN network definition.

            ...

            ANSWER

            Answered 2022-Feb-17 at 10:47

            You should try to export the model using torch.onnx. The page gives you an example that you can start with.

            An alternative is to use TorchScript, but that requires torch libraries.

            Both of these can be run without python. You can load torchscript in a C++ application https://pytorch.org/tutorials/advanced/cpp_export.html

            ONNX is much more portable and you can use in languages such as C#, Java, or Javascript https://onnxruntime.ai/ (even on the browser)

            A running example

            Just modifying a little your example to go over the errors I found

            Notice that via tracing any if/elif/else, for, while will be unrolled

            Source https://stackoverflow.com/questions/71146140

            QUESTION

            Flux.jl : Customizing optimizer
            Asked 2022-Jan-25 at 07:58

            I'm trying to implement a gradient-free optimizer function to train convolutional neural networks with Julia using Flux.jl. The reference paper is this: https://arxiv.org/abs/2005.05955. This paper proposes RSO, a gradient-free optimization algorithm updates single weight at a time on a sampling bases. The pseudocode of this algorithm is depicted in the picture below.

            optimizer_pseudocode

            I'm using MNIST dataset.

            ...

            ANSWER

            Answered 2022-Jan-14 at 23:47

            Based on the paper you shared, it looks like you need to change the weight arrays per each output neuron per each layer. Unfortunately, this means that the implementation of your optimization routine is going to depend on the layer type, since an "output neuron" for a convolution layer is quite different than a fully-connected layer. In other words, just looping over Flux.params(model) is not going to be sufficient, since this is just a set of all the weight arrays in the model and each weight array is treated differently depending on which layer it comes from.

            Fortunately, Julia's multiple dispatch does make this easier to write if you use separate functions instead of a giant loop. I'll summarize the algorithm using the pseudo-code below:

            Source https://stackoverflow.com/questions/70641453

            QUESTION

            How can I check a confusion_matrix after fine-tuning with custom datasets?
            Asked 2021-Nov-24 at 13:26

            This question is the same with How can I check a confusion_matrix after fine-tuning with custom datasets?, on Data Science Stack Exchange.

            Background

            I would like to check a confusion_matrix, including precision, recall, and f1-score like below after fine-tuning with custom datasets.

            Fine tuning process and the task are Sequence Classification with IMDb Reviews on the Fine-tuning with custom datasets tutorial on Hugging face.

            After finishing the fine-tune with Trainer, how can I check a confusion_matrix in this case?

            An image of confusion_matrix, including precision, recall, and f1-score original site: just for example output image

            ...

            ANSWER

            Answered 2021-Nov-24 at 13:26

            What you could do in this situation is to iterate on the validation set(or on the test set for that matter) and manually create a list of y_true and y_pred.

            Source https://stackoverflow.com/questions/68691450

            QUESTION

            CUDA OOM - But the numbers don't add upp?
            Asked 2021-Nov-23 at 06:13

            I am trying to train a model using PyTorch. When beginning model training I get the following error message:

            RuntimeError: CUDA out of memory. Tried to allocate 5.37 GiB (GPU 0; 7.79 GiB total capacity; 742.54 MiB already allocated; 5.13 GiB free; 792.00 MiB reserved in total by PyTorch)

            I am wondering why this error is occurring. From the way I see it, I have 7.79 GiB total capacity. The numbers it is stating (742 MiB + 5.13 GiB + 792 MiB) do not add up to be greater than 7.79 GiB. When I check nvidia-smi I see these processes running

            ...

            ANSWER

            Answered 2021-Nov-23 at 06:13

            This is more of a comment, but worth pointing out.

            The reason in general is indeed what talonmies commented, but you are summing up the numbers incorrectly. Let's see what happens when tensors are moved to GPU (I tried this on my PC with RTX2060 with 5.8G usable GPU memory in total):

            Let's run the following python commands interactively:

            Source https://stackoverflow.com/questions/70074789

            QUESTION

            How to compare baseline and GridSearchCV results fair?
            Asked 2021-Nov-04 at 21:17

            I am a bit confusing with comparing best GridSearchCV model and baseline.
            For example, we have classification problem.
            As a baseline, we'll fit a model with default settings (let it be logistic regression):

            ...

            ANSWER

            Answered 2021-Nov-04 at 21:17

            No, they aren't comparable.

            Your baseline model used X_train to fit the model. Then you're using the fitted model to score the X_train sample. This is like cheating because the model is going to already perform the best since you're evaluating it based on data that it has already seen.

            The grid searched model is at a disadvantage because:

            1. It's working with less data since you have split the X_train sample.
            2. Compound that with the fact that it's getting trained with even less data due to the 5 folds (it's training with only 4/5 of X_val per fold).

            So your score for the grid search is going to be worse than your baseline.

            Now you might ask, "so what's the point of best_model.best_score_? Well, that score is used to compare all the models used when searching for the optimal hyperparameters in your search space, but in no way should be used to compare against a model that was trained outside of the grid search context.

            So how should one go about conducting a fair comparison?

            1. Split your training data for both models.

            Source https://stackoverflow.com/questions/69844028

            QUESTION

            Getting Error 524 while running jupyter lab in google cloud platform
            Asked 2021-Oct-15 at 02:14

            I am not able to access jupyter lab created on google cloud

            I created one notebook using Google AI platform. I was able to start it and work but suddenly it stopped and I am not able to start it now. I tried building and restarting the jupyterlab, but of no use. I have checked my disk usages as well, which is only 12%.

            I tried the diagnostic tool, which gave the following result:

            but didn't fix it.

            Thanks in advance.

            ...

            ANSWER

            Answered 2021-Aug-20 at 14:00

            QUESTION

            TypeError: brain.NeuralNetwork is not a constructor
            Asked 2021-Sep-29 at 22:47

            I am new to Machine Learning.

            Having followed the steps in this simple Maching Learning using the Brain.js library, it beats my understanding why I keep getting the error message below:

            I have double-checked my code multiple times. This is particularly frustrating as this is the very first exercise!

            Kindly point out what I am missing here!

            Find below my code:

            ...

            ANSWER

            Answered 2021-Sep-29 at 22:47

            Turns out its just documented incorrectly.

            In reality the export from brain.js is this:

            Source https://stackoverflow.com/questions/69348213

            QUESTION

            Ordinal Encoding or One-Hot-Encoding
            Asked 2021-Sep-04 at 06:43

            IF we are not sure about the nature of categorical features like whether they are nominal or ordinal, which encoding should we use? Ordinal-Encoding or One-Hot-Encoding? Is there a clearly defined rule on this topic?

            I see a lot of people using Ordinal-Encoding on Categorical Data that doesn't have a Direction. Suppose a frequency table:

            ...

            ANSWER

            Answered 2021-Sep-04 at 06:43

            You're right. Just one thing to consider for choosing OrdinalEncoder or OneHotEncoder is that does the order of data matter?

            Most ML algorithms will assume that two nearby values are more similar than two distant values. This may be fine in some cases e.g., for ordered categories such as:

            • quality = ["bad", "average", "good", "excellent"] or
            • shirt_size = ["large", "medium", "small"]

            but it is obviously not the case for the:

            • color = ["white","orange","black","green"]

            column (except for the cases you need to consider a spectrum, say from white to black. Note that in this case, white category should be encoded as 0 and black should be encoded as the highest number in your categories), or if you have some cases for example, say, categories 0 and 4 may be more similar than categories 0 and 1. To fix this issue, a common solution is to create one binary attribute per category (One-Hot encoding)

            Source https://stackoverflow.com/questions/69052776

            QUESTION

            How to increase dimension-vector size of BERT sentence-transformers embedding
            Asked 2021-Aug-15 at 13:35

            I am using sentence-transformers for semantic search but sometimes it does not understand the contextual meaning and returns wrong result eg. BERT problem with context/semantic search in italian language

            by default the vector side of embedding of the sentence is 78 columns, so how do I increase that dimension so that it can understand the contextual meaning in deep.

            code:

            ...

            ANSWER

            Answered 2021-Aug-10 at 07:39

            Increasing the dimension of a trained model is not possible (without many difficulties and re-training the model). The model you are using was pre-trained with dimension 768, i.e., all weight matrices of the model have a corresponding number of trained parameters. Increasing the dimensionality would mean adding parameters which however need to be learned.

            Also, the dimension of the model does not reflect the amount of semantic or context information in the sentence representation. The choice of the model dimension reflects more a trade-off between model capacity, the amount of training data, and reasonable inference speed.

            If the model that you are using does not provide representation that is semantically rich enough, you might want to search for better models, such as RoBERTa or T5.

            Source https://stackoverflow.com/questions/68686272

            QUESTION

            How to identify what features affect predictions result?
            Asked 2021-Aug-11 at 15:55

            I have a table with features that were used to build some model to predict whether user will buy a new insurance or not. In the same table I have probability of belonging to the class 1 (will buy) and class 0 (will not buy) predicted by this model. I don't know what kind of algorithm was used to build this model. I only have its predicted probabilities.

            Question: how to identify what features affect these prediction results? Do I need to build correlation matrix or conduct any tests?

            Table example:

            ...

            ANSWER

            Answered 2021-Aug-11 at 15:55

            You could build a model like this.

            x = features you have. y = true_lable

            from that you can extract features importance. also, if you want to go the extra mile,you can do Bootstrapping, so that the features importance would be more stable (statistical).

            Source https://stackoverflow.com/questions/68744565

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install pointnet

            Install TensorFlow. You may also need to install h5py. The code has been tested with Python 2.7, TensorFlow 1.0.1, CUDA 8.0 and cuDNN 5.1 on Ubuntu 14.04.

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