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Restructured to allow 'import page_segmentation'

Ghost User requested to merge balbach_master_thesis/page-segmentation:thesis into master

Restructured the project to make it importable as module.

bash programs are unchanged but comprised the python code to one module so that imports like the following are possible e.g.:

from page_segmentation import train uses the functionality of the page-segmentation-train command as python function:

def train(output:str,
    train:str=[],
    test:str=[],
    eval:str=[],
    split_file:str=None,
    prediction_dir:str=None,
    l_rate:float=1e-3,
    l_rate_drop_factor:float=0.1,
    n_classes:int=4,
    target_line_height:int=6,
    load:str=None,
    n_iter:int=500,
    early_stopping_test_interval:int=100,
    early_stopping_max_keep:int=10,
    early_stopping_max_l_rate_drops:int=3,
    early_stopping_on_accuracy=False,
    display:int=100):

Likewise with from page_segmentation import predict uses the functionality of the page-segmentation-predict.

Installing the project previously installed it as scripts.* and lib.* this means that it easily clashed with other modules doing the same. It could be argued that lib.trainer and lib.predictor should be made to top level classes/scripts instead of scripts.train.train and scripts.predict.predict

Added subprogramms in bash e.g.:

page-segmentation train

[Caution: code should be reviewed before merging]

Edited by Ghost User

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