“““
bboxes.py

Bounding?box?utility?functions.

Written?by?Phil?Ferriere

Licensed?under?the?MIT?License?（see?LICENSE?for?details）

based?on:
????-?https://github.com/matterport/Mask_RCNN/blob/master/utils.py
????????Copyright?（c）?2017?Matterport?Inc.?/?Written?by?Waleed?Abdulla
????????Licensed?under?the?MIT?License

References?for?future?work:
????-?https://github.com/tensorflow/models/blob/master/research/object_detection/utils/np_box_ops.py
??????https://github.com/tensorflow/models/blob/master/research/object_detection/utils/ops.py
????????Copyright?2017?The?TensorFlow?Authors.?All?Rights?Reserved.
????????Licensed?under?the?Apache?License?Version?2.0
????-?https://github.com/tangyuhao/DAVIS-2016-Chanllege-Solution/blob/master/Step1-SSD/tf_extended/bboxes.py
????????https://github.com/tangyuhao/DAVIS-2016-Chanllege-Solution/blob/master/Step1-SSD/bounding_box.py
????????Copyright?（c）?2017?Paul?Balanca?/?Written?by?Paul?Balanca
????????Licensed?under?the?Apache?License?Version?2.0?January?2004
“““

import?numpy?as?np

def?extract_bbox（mask?order=‘y1x1y2x2‘）:
????“““Compute?bounding?box?from?a?mask.
????Param:
????????mask:?[height?width].?Mask?pixels?are?either?>0?or?0.
????????order:?[‘y1x1y2x2‘?|?]
????Returns:
????????bbox?numpy?array?[y1?x1?y2?x2]?or?tuple?x1?y1?x2?y2.
????based?on:
????????https://stackoverflow.com/questions/31400769/bounding-box-of-numpy-array
????“““
????horizontal_indicies?=?np.where（np.any（mask?axis=0））[0]
????vertical_indicies?=?np.where（np.any（mask?axis=1））[0]
????if?horizontal_indicies.shape[0]:
????????x1?x2?=?horizontal_indicies[[0?-1]]
????????y1?y2?=?vertical_indicies[[0?-1]]
????????#?x2?and?y2?should?not?be?part?of?the?box.?Increment?by?1.
????????x2?+=?1
????????y2?+=?1
????else:
????????#?No?mask?for?this?instance.?Might?happen?due?to
????????#?resizing?or?cropping.?Set?bbox?to?zeros
????????x1?x2?y1?y2?=?0?0?0?0
????if?order?==?‘x1y1x2y2‘:
????????return?x1?y1?x2?y2
????else:
????????return?np.array（[y1?x1?y2?x2]）

def?extract_bboxes（mask）:
????“““Compute?bounding?boxes?from?an?array?of?masks.
????Params
????????mask:?[height?width?num_instances].?Mask?pixels?are?either?>0?or?0.
????Returns:
????????bbox?numpy?arrays?[num_instances?（y1?x1?y2?x2）].
????“““
????boxes?=?np.zeros（[mask.shape[-1]?4]?dtype=np.int32）
????for?i?in?range（mask.shape[-1]）:
????????boxes[i]?=?extract_bbox（mask[:?:?i]）
????return?boxes.astype（np.int32）

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-07-15?08:29??tfwss-master\
?????文件????????1219??2018-07-15?08:29??tfwss-master\.gitignore
?????文件????????1070??2018-07-15?08:29??tfwss-master\LICENSE
?????文件????????8455??2018-07-15?08:29??tfwss-master\README.md
?????目錄???????????0??2018-07-15?08:29??tfwss-master\tfwss\
?????文件????????2447??2018-07-15?08:29??tfwss-master\tfwss\bboxes.py
?????文件???????21748??2018-07-15?08:29??tfwss-master\tfwss\dataset.py
?????目錄???????????0??2018-07-15?08:29??tfwss-master\tfwss\img\
?????文件???????39737??2018-07-15?08:29??tfwss-master\tfwss\img\2008_000203.jpg
?????文件???????37489??2018-07-15?08:29??tfwss-master\tfwss\img\2008_000219.jpg
?????文件???????28139??2018-07-15?08:29??tfwss-master\tfwss\img\2008_000553.jpg
?????文件???????20152??2018-07-15?08:29??tfwss-master\tfwss\img\2008_000581.jpg
?????文件???????52708??2018-07-15?08:29??tfwss-master\tfwss\img\2008_000657.jpg
?????文件???????27581??2018-07-15?08:29??tfwss-master\tfwss\img\2008_000727.jpg
?????文件???????25443??2018-07-15?08:29??tfwss-master\tfwss\img\2008_000795.jpg
?????文件???????34823??2018-07-15?08:29??tfwss-master\tfwss\img\2008_000811.jpg
?????文件???????32854??2018-07-15?08:29??tfwss-master\tfwss\img\2008_000825.jpg
?????文件???????42743??2018-07-15?08:29??tfwss-master\tfwss\img\2008_000839.jpg
?????文件???????27821??2018-07-15?08:29??tfwss-master\tfwss\img\2008_000957.jpg
?????文件???????24394??2018-07-15?08:29??tfwss-master\tfwss\img\2008_001113.jpg
?????文件???????33931??2018-07-15?08:29??tfwss-master\tfwss\img\2008_001199.jpg
?????文件???????50882??2018-07-15?08:29??tfwss-master\tfwss\img\2008_001867.jpg
?????文件???????43266??2018-07-15?08:29??tfwss-master\tfwss\img\2008_002191.jpg
?????文件???????26811??2018-07-15?08:29??tfwss-master\tfwss\img\2008_002673.jpg
?????文件???????38417??2018-07-15?08:29??tfwss-master\tfwss\img\2008_003055.jpg
?????文件???????46450??2018-07-15?08:29??tfwss-master\tfwss\img\2008_003141.jpg
?????文件???????16254??2018-07-15?08:29??tfwss-master\tfwss\img\data_files.png
?????文件???????63958??2018-07-15?08:29??tfwss-master\tfwss\img\vgg16.png
?????文件??????140495??2018-07-15?08:29??tfwss-master\tfwss\img\vgg_16_4chan_weak_dsn2_loss.png
?????文件??????139545??2018-07-15?08:29??tfwss-master\tfwss\img\vgg_16_4chan_weak_dsn3_loss.png
?????文件??????134404??2018-07-15?08:29??tfwss-master\tfwss\img\vgg_16_4chan_weak_dsn4_loss.png
............此處省略25個文件信息