Overview: within a given ROI, cropping images with emphasizing the subclass of interest.
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Cropping Method
- Please refer to the confluence page
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Format Assumption
- installation manually
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Python 3.5.2
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PyMongo
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python -m pip install pymongo- Or you can use the virtual environment on the cental by running the following script.
cd <path_to_object_detection_training_tools>/env_setup
source set_env.sh- copy image sources from liquid_nas to local disk
- liquid_nas: /mnt/liquid_nas/VALObjectDetectionDataCenter/<image_raw>
- local disk : /mnt/data-pcie1/<your_dir_name>/VALObjectDetectonDataCenter/<image_raw>
- the images are cloned from liquid_nas to local machine before starting cropping.
# in roi_image_cropping.py
def convert_path_root(a_path):
# line 87
converted_path = a_path.replace('/mnt/liquid_nas','/mnt/data-pcie1/<dir_name>')- Define Input/output info in the script
- input : list of the image source in mongoDB
- output : images and annotations
# in ./src/roi_image_cropping_mp.py
# line 273
def run_all(out_dir):
# line 274: define mongodb server address
mongoDB_server = 'mongodb://apps01:27017'
# line 275: define the collection list on mongodb
collection_list = ['subclass_batch1_with_faces_raw', 'subclass_batch2_part1_with_faces_raw', 'subclass_batch2_part2_with_faces_raw', 'subclass_batch3_with_faces_raw', 'night_annotations_with_faces_raw']# define output path in gen_cropped_images_and_annotaions.sh
OUT=<path_of_output>
# Example
OUT="/mnt/data-pcie1/zf.working/working/roi_cropping/subclass"- Run the script
bash gen_cropped_images_and_annotations.sh- How to modify the subclass of interest
- add or delete the class name in "roi_image_cropping_mp.py"
- {'annotation.class': 'bus'}
- modify line 198 as the following
- add or delete the class name in "roi_image_cropping_mp.py"
# in file, roi_image_cropping_mp.py.
def get_subclass_annotation(annotation_collection, local_path_name, no_boat = False):
aggregation_option = [
{ '$match' : {FieldDef.local_path_str: local_path_name} },
{ '$unwind' : "$annotation" },
{ '$sort' : { 'annotation.confidence' : -1} },
#line 198
{ '$match' : { '$or' : [{'annotation.class': 'bus'}, {'annotation.class': 'truck'}, {'annotation.class': 'bicycle'}, {'annotation.class': 'motorcycle'}, {'annotation.class': 'boat'}] } },
# skip...
]- How to adjust the aspec ratio
- aspect_ratio : aspect ratio
- aspect_ratio_threshold : aspect ratio threshold to skip objects
# ./src/CroppingRegionProplsal.py
# line 238
width_new, height_new = CroppingRegionProposal.adjust_aspect_ratio(width_tmp, height_tmp, <aspect_ratio>, <aspect_ratio_threshold>)