Fix quality 12

[fspindle]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 73.32309% with 521 lines in your changes missing coverage. Please review.

Project coverage is 45.23%. Comparing base (565ce61) to head (f1b79a1).
Report is 1 commits behind head on master.

Files	Patch %	Lines
...dules/core/src/math/matrix/vpMatrix_operations.cpp	48.12%	138 Missing ⚠️
modules/core/src/image/vpImageFilter_canny.cpp	0.00%	100 Missing ⚠️
modules/core/src/image/vpImageConvert_opencv.cpp	30.76%	90 Missing ⚠️
modules/core/include/visp3/core/vpImage_getters.h	72.37%	79 Missing ⚠️
...odules/core/src/math/matrix/vpMatrix_operators.cpp	73.04%	62 Missing ⚠️
modules/core/src/image/vpRGBa.cpp	0.00%	18 Missing ⚠️
modules/core/src/math/matrix/vpColVector.cpp	0.00%	9 Missing ⚠️
modules/core/include/visp3/core/vpImage.h	80.00%	6 Missing ⚠️
modules/core/src/image/vpRGBf.cpp	50.00%	5 Missing ⚠️
...odules/core/include/visp3/core/vpImageTools_warp.h	99.24%	3 Missing ⚠️
... and 8 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1422      +/-   ##
==========================================
- Coverage   45.26%   45.23%   -0.03%     
==========================================
  Files        1087     1106      +19     
  Lines      109850   109982     +132     
  Branches    18835    18860      +25     
==========================================
+ Hits        49721    49751      +30     
- Misses      60129    60231     +102     

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