Add support for framework-specific preprocessing of object arrays

[beat-buesser]

Signed-off-by: Beat Buesser beat.buesser@ie.ibm.com

Description

This pull request adds support for framework-specific preprocessing of object arrays.

Fixes #1683

Type of change

Please check all relevant options.

• Improvement (non-breaking)
• Bug fix (non-breaking)
• New feature (non-breaking)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Testing

Please describe the tests that you ran to verify your changes. Consider listing any relevant details of your test configuration.

• Test A
• Test B

Test Configuration:

• OS
• Python version
• ART version or commit number
• TensorFlow / Keras / PyTorch / MXNet version

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[codecov-commenter]

Codecov Report

Merging #1702 (1c81523) into dev_1.10.2 (af9bf9c) will increase coverage by 0.07%.
The diff coverage is 92.00%.

@@              Coverage Diff               @@
##           dev_1.10.2    #1702      +/-   ##
==============================================
+ Coverage       88.04%   88.12%   +0.07%     
==============================================
  Files             259      263       +4     
  Lines           21398    21964     +566     
  Branches         3800     3918     +118     
==============================================
+ Hits            18840    19355     +515     
- Misses           1607     1649      +42     
- Partials          951      960       +9     

Impacted Files	Coverage Δ
...t/defences/preprocessor/mp3_compression_pytorch.py	95.74% <80.00%> (-4.26%)	⬇️
...timators/speech_recognition/pytorch_deep_speech.py	94.11% <100.00%> (+0.41%)	⬆️
art/estimators/gan/tensorflow.py	66.07% <0.00%> (ø)
...g/backdoor_attack_dgm/backdoor_attack_dgm_trail.py	95.34% <0.00%> (ø)
...mators/object_detection/pytorch_object_detector.py	79.21% <0.00%> (ø)
...ing/backdoor_attack_dgm/backdoor_attack_dgm_red.py	90.90% <0.00%> (ø)
art/defences/detector/poison/activation_defence.py	84.61% <0.00%> (+0.33%)	⬆️
art/estimators/pytorch.py	83.62% <0.00%> (+0.86%)	⬆️
art/attacks/evasion/carlini.py	95.78% <0.00%> (+1.12%)	⬆️
... and 5 more

[lgtm-com]

This pull request introduces 1 alert when merging 224d038 into 3a3bedf - view on LGTM.com

new alerts:

• 1 for Module is imported more than once

[lgtm-com]

This pull request introduces 1 alert when merging 6e436c3 into 3a3bedf - view on LGTM.com

new alerts:

• 1 for Module is imported more than once

[lgtm-com]

This pull request introduces 1 alert when merging 25d96be into 3a3bedf - view on LGTM.com

new alerts:

• 1 for Module is imported more than once

[lgtm-com]

This pull request introduces 1 alert when merging 1c81523 into 3a3bedf - view on LGTM.com

new alerts:

• 1 for Module is imported more than once