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OpenCV
4.8.0
Open Source Computer Vision
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Prev Tutorial: Installation in Linux
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Original author | Egor Smirnov |
Compatibility | OpenCV >= 4.0 |
This pretty-printer can show element type, is_continuous
, is_submatrix
flags and (possibly truncated) matrix. It is known to work in Clion, VS Code and gdb.
Move into opencv/samples/gdb/
. Place mat_pretty_printer.py
in a convenient place, rename gdbinit
to .gdbinit
and move it into your home folder. Change 'source' line of .gdbinit
to point to your mat_pretty_printer.py
path.
In order to check version of python bundled with your gdb, use the following commands from the gdb shell:
python import sys print(sys.version_info) end
If the version of python 3 installed in your system doesn't match the version in gdb, create a new virtual environment with the exact same version, install numpy
and change the path to python3 in .gdbinit
accordingly.
The fields in a debugger prefixed with view_
are pseudo-fields added for convenience, the rest are left as is. If you feel that the number of elements in truncated view is too low, you can edit mat_pretty_printer.py
- np.set_printoptions
controls everything matrix display-related.