How To Deter Adversarial Attacks In Computer Vision Models

While computer vision has become one of the most used technologies across the globe, computer vision models are not immune to threats. One of the reasons for this threat is the underlying lack of robustness of the models. Indrajit Kar, who is the Principal Solution Architect at Accenture, took through a talk at CVDC 2020 on how to make AI more resilient to attack.

Read more: https://analyticsindiamag.com/how-to-deter-adversarial-attacks-in-computer-vision-models/

#association of data scientist #cvdc2020 #cvdc #computervision

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How To Deter Adversarial Attacks In Computer Vision Models
Macey  Kling

Macey Kling

1597499940

How To Deter Adversarial Attacks In Computer Vision Models

While computer vision has become one of the most used technologies across the globe, computer vision models are not immune to threats. One of the reasons for this threat is the underlying lack of robustness of the models. Indrajit Kar, who is the Principal Solution Architect at Accenture, took through a talk at CVDC 2020 on how to make AI more resilient to attack.

As Kar shared, AI has become the new target for attackers, and the instances of manipulation and adversaries have increased dramatically over the last few years. From companies such as Google and Tesla to startups are affected by adversarial attacks.

“While we celebrate advancements in AI, deep neural networks (DNNs)—the algorithms intrinsic to much of AI—have recently been proven to be at risk from attack through seemingly benign inputs. It is possible to fool DNNs by making subtle alterations to input data that often either remain undetected or are overlooked if presented to a human,” he said.

Type Of Adversarial Attacks

Alterations to images that are so small as to remain unnoticed by humans can cause DNNs to misinterpret the image content. As many AI systems take their input from external sources—voice recognition devices or social media upload, for example—this ability to be tricked by adversarial input opens a new, often intriguing, security threat. This has called for an increase in cybersecurity which is coming together to address the crevices in computer vision and machine learning.

#developers corner #adversarial attacks #computer vision #computer vision adversarial attack

How to Trick Computer Vision Models

With the advent of neural networks, machine learning has gained immense popularity, and companies in just about every industry have started to apply some form of this vast technology to increase efficiency, improve throughput, or enhance customer experiences.

Artificial intelligence as a field has seen major breakthroughs in many areas within the past decade. With so many industries jumping towards automation and trying to apply AI to enhance customer experiences, it’s started to create a bigger impact in our day-to-day lives. Being used on such a large and varied scale, it has recently come to light that these methods come with their own problems.

This article asks an important question: whether the machine learning models we use are intrinsically flawed or not.

#neural-networks #heartbeat #adversarial-attack #machine-learning #computer-vision

Are Computer Vision Models Vulnerable to Weight Poisoning Attacks?

Introduction

In a recent article “Weight Poisoning Attacks on Pre-trained Models” (Kurita et al., 2020), the authors explore the possibility of influencing the predictions of a freshly trained Natural Language Processing (NLP) model by tweaking the weights re-used in its training. While they also propose defenses against such attacks, the very existence of such backdoors poses questions to any production AI system trained using pre-trained weights. This result is especially interesting if it proves to transfer also to the context of Computer Vision (CV) since there, the usage of pre-trained weights is widespread.

#overviews #adversarial #ai #computer vision #machine learning #nlp

Royce  Reinger

Royce Reinger

1667895908

Vision: Datasets, Transforms and Models Specific to Computer Vision

Torchvision

The torchvision package consists of popular datasets, model architectures, and common image transformations for computer vision.

Installation

We recommend Anaconda as Python package management system. Please refer to pytorch.org for the detail of PyTorch (torch) installation. The following is the corresponding torchvision versions and supported Python versions.

torchtorchvisionpython
main / nightlymain / nightly>=3.7, <=3.10
1.13.00.14.0>=3.7, <=3.10
1.12.00.13.0>=3.7, <=3.10
1.11.00.12.0>=3.7, <=3.10
1.10.20.11.3>=3.6, <=3.9
1.10.10.11.2>=3.6, <=3.9
1.10.00.11.1>=3.6, <=3.9
1.9.10.10.1>=3.6, <=3.9
1.9.00.10.0>=3.6, <=3.9
1.8.20.9.2>=3.6, <=3.9
1.8.10.9.1>=3.6, <=3.9
1.8.00.9.0>=3.6, <=3.9
1.7.10.8.2>=3.6, <=3.9
1.7.00.8.1>=3.6, <=3.8
1.7.00.8.0>=3.6, <=3.8
1.6.00.7.0>=3.6, <=3.8
1.5.10.6.1>=3.5, <=3.8
1.5.00.6.0>=3.5, <=3.8
1.4.00.5.0==2.7, >=3.5, <=3.8
1.3.10.4.2==2.7, >=3.5, <=3.7
1.3.00.4.1==2.7, >=3.5, <=3.7
1.2.00.4.0==2.7, >=3.5, <=3.7
1.1.00.3.0==2.7, >=3.5, <=3.7
<=1.0.10.2.2==2.7, >=3.5, <=3.7

Anaconda:

conda install torchvision -c pytorch

pip:

pip install torchvision

From source:

python setup.py install
# or, for OSX
# MACOSX_DEPLOYMENT_TARGET=10.9 CC=clang CXX=clang++ python setup.py install

We don't officially support building from source using pip, but if you do, you'll need to use the --no-build-isolation flag. In case building TorchVision from source fails, install the nightly version of PyTorch following the linked guide on the contributing page and retry the install.

By default, GPU support is built if CUDA is found and torch.cuda.is_available() is true. It's possible to force building GPU support by setting FORCE_CUDA=1 environment variable, which is useful when building a docker image.

Image Backend

Torchvision currently supports the following image backends:

  • Pillow (default)
  • Pillow-SIMD - a much faster drop-in replacement for Pillow with SIMD. If installed will be used as the default.
  • accimage - if installed can be activated by calling torchvision.set_image_backend('accimage')
  • libpng - can be installed via conda conda install libpng or any of the package managers for debian-based and RHEL-based Linux distributions.
  • libjpeg - can be installed via conda conda install jpeg or any of the package managers for debian-based and RHEL-based Linux distributions. libjpeg-turbo can be used as well.

Notes: libpng and libjpeg must be available at compilation time in order to be available. Make sure that it is available on the standard library locations, otherwise, add the include and library paths in the environment variables TORCHVISION_INCLUDE and TORCHVISION_LIBRARY, respectively.

Video Backend

Torchvision currently supports the following video backends:

  • pyav (default) - Pythonic binding for ffmpeg libraries.
  • video_reader - This needs ffmpeg to be installed and torchvision to be built from source. There shouldn't be any conflicting version of ffmpeg installed. Currently, this is only supported on Linux.
conda install -c conda-forge ffmpeg
python setup.py install

Using the models on C++

TorchVision provides an example project for how to use the models on C++ using JIT Script.

Installation From source:

mkdir build
cd build
# Add -DWITH_CUDA=on support for the CUDA if needed
cmake ..
make
make install

Once installed, the library can be accessed in cmake (after properly configuring CMAKE_PREFIX_PATH) via the TorchVision::TorchVision target:

find_package(TorchVision REQUIRED)
target_link_libraries(my-target PUBLIC TorchVision::TorchVision)

The TorchVision package will also automatically look for the Torch package and add it as a dependency to my-target, so make sure that it is also available to cmake via the CMAKE_PREFIX_PATH.

For an example setup, take a look at examples/cpp/hello_world.

Python linking is disabled by default when compiling TorchVision with CMake, this allows you to run models without any Python dependency. In some special cases where TorchVision's operators are used from Python code, you may need to link to Python. This can be done by passing -DUSE_PYTHON=on to CMake.

TorchVision Operators

In order to get the torchvision operators registered with torch (eg. for the JIT), all you need to do is to ensure that you #include <torchvision/vision.h> in your project.

Documentation

You can find the API documentation on the pytorch website: https://pytorch.org/vision/stable/index.html

Contributing

See the CONTRIBUTING file for how to help out.

Disclaimer on Datasets

This is a utility library that downloads and prepares public datasets. We do not host or distribute these datasets, vouch for their quality or fairness, or claim that you have license to use the dataset. It is your responsibility to determine whether you have permission to use the dataset under the dataset's license.

If you're a dataset owner and wish to update any part of it (description, citation, etc.), or do not want your dataset to be included in this library, please get in touch through a GitHub issue. Thanks for your contribution to the ML community!

Pre-trained Model License

The pre-trained models provided in this library may have their own licenses or terms and conditions derived from the dataset used for training. It is your responsibility to determine whether you have permission to use the models for your use case.

More specifically, SWAG models are released under the CC-BY-NC 4.0 license. See SWAG LICENSE for additional details.

Download Details:

Author: Pytorch
Source Code: https://github.com/pytorch/vision 
License: BSD-3-Clause license

#machinelearning #computer #vision #dataset 

Thurman  Mills

Thurman Mills

1620754080

Top 4 Cloud Computing Models Explained

Whether you are a business owner looking to shift your current on-premise infrastructure to the cloud, or a student who wants to start learning cloud computing, the first step is knowing about cloud computing models. The three models that you will come across are – IaaS, PaaS, and SaaS. These models have many distinct features. You can avail of these cloud services over the Internet easily.

Cloud Computing Models

1. IaaS (Infrastructure as a Service)

IaaS is one of the most important cloud computing models that provides you with networking hardware over the Internet. These resources are provided to you through virtualization. This means that you can log in to an IaaS platform to use virtual machines (VM) to install an OS or software and run databases. This VM can work as a virtual data center.

#cloud computing #cloud computing models #cloud models #cloud