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## Motivation
Use the pytorch-grad-cam tool to visualize Class Activation Maps (CAM).
## Modification
Use the pytorch-grad-cam tool to visualize Class Activation Maps (CAM).
requirement: pip install grad-cam
run commad: python tools/analysis_tools/visualization_cam.py
## BC-breaking (Optional)
Does the modification introduce changes that break the
backward-compatibility of the downstream repos?
If so, please describe how it breaks the compatibility and how the
downstream projects should modify their code to keep compatibility with
this PR.
## Use cases (Optional)
If this PR introduces a new feature, it is better to list some use cases
here, and update the documentation.
## Checklist
1. Pre-commit or other linting tools are used to fix the potential lint
issues.
2. The modification is covered by complete unit tests. If not, please
add more unit test to ensure the correctness.
3. The documentation has been modified accordingly, like docstring or
example tutorials.
Peng Lu
zhen6618