Fix bugs in aligning tool

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 97.05882% with 1 line in your changes missing coverage. Please review.

Project coverage is 84.40%. Comparing base (67c74cf) to head (2b6f0cf).

Files	Patch %	Lines
src/core/implementation/image_aligner.cpp	96.96%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #657 +/- ## ========================================== + Coverage 84.17% 84.40% +0.23% ========================================== Files 192 196 +4 Lines 8257 8368 +111 ========================================== + Hits 6950 7063 +113 + Misses 1307 1305 -2 ```

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