YoloV5 label file parsing bug

[michael-mayo]

Describe the bug
YoloV5 label txt files do not always use a single space as a delimiter. Some tools generate yolo-compatible labels with tab as a delimiter. However, parsing these labels in globox leads to an error since the default separator must be a single space character. Globox would be more robust if it allowed any whitespace character as delimiters for yolo label files.

To Reproduce
Change any yolo label file so that it has one non-space delimiter such as tab and try to parse in the label files with AnnotationSet.from_yolo_v5

Expected behavior
File parsing error occurs, e.g.

File "/home/lonrix/miniconda3/envs/training_data_processing/lib/python3.11/site-packages/globox/annotation.py", line 136, in from_txt
    raise FileParsingError(path, e.reason)
globox.errors.FileParsingError: Error while reading file '/home/lonrix/train/faults_v4_taurangacc_2023/val/labels/1187B1R1-ROW-00159.txt': Syntax error in txt annotation file.

Environment (please complete the following information):

• Python 3.11, latest version of globox.

[laclouis5]

Hi @michael-mayo. I implemented the feature, could you try that #40 solves your issue?

[laclouis5]

@michael-mayo Any update? I did some tests on my side so I'll merge this in few days but it would be nice to have a feedback from you.