This is a simple python extension script to visualize interactively OpenCV images while debugging with gdb.
This is a modification that actually works on gdb 7.7 on python3, though only implements non-interactive "save_image" functionality.
You need to have gdb (version 7.7 or newer).
You can try to use the save_image command by sourcing it first from within a gdb
session with the command
gdb> source save_image.py
(insert the path to the save_image.py file on your machine, if it is not in the
gdb current working directory). You can also add the command to your .gbdinit
file if you do not want to source it at each session.
Usage is extremely simple, once you have sourced the file. If the variable you
want to inspect (i.e., show) is a cv::Mat or an IplImage or MinImg or mximg::PImage
all you need to do is
gdb> save_image image [path/to/image.png=/tmp/gdb.png]
where image is the name of your variable
from within your gdb session.
To use the demo
$ cd gdb-imshow
$ mkdir Debug
$ cd Debug
$ cmake -DCMAKE_BUILD_TYPE=Debug ..
$ make
$ gdb ./main