import?numpy?as?np
import?cv2?pdb


def?composite4（fg?bg?a）:
	fg?=?np.array（fg?np.float32）
	alpha=?np.expand_dims（a?/?255axis=2）
	im?=?alpha?*?fg?+?（1?-?alpha）?*?bg
	im?=?im.astype（np.uint8）
	return?im

def?get_bbox（maskRC）:
????where?=?np.array（np.where（mask））
????x1?y1?=?np.amin（where?axis=1）
????x2?y2?=?np.amax（where?axis=1）

????bbox_init=[x1y1np.maximum（x2-x1y2-y1）np.maximum（x2-x1y2-y1）]


????bbox=create_bbox（bbox_init（RC））

????return?bbox

def?crop_images（crop_listresobbox）:

????for?i?in?range（0len（crop_list））:
????????img=crop_list[i]
????????if?img.ndim==3:
????????????img_crop=img[bbox[0]:bbox[0]+bbox[2]bbox[1]:bbox[1]+bbox[3]...];?img_crop=cv2.resize（img_cropreso）
????????else:
????????????img_crop=img[bbox[0]:bbox[0]+bbox[2]bbox[1]:bbox[1]+bbox[3]];?i

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2020-04-06?16:53??Background-Matting-master\
?????文件????????6411??2020-04-06?16:53??Background-Matting-master\README.md
?????文件????????1403??2020-04-06?16:53??Background-Matting-master\functions.py
?????文件????????8999??2020-04-06?16:53??Background-Matting-master\networks.py
?????文件??????????59??2020-04-06?16:53??Background-Matting-master\requirements.txt
?????目錄???????????0??2020-04-06?16:53??Background-Matting-master\sample_data\
?????目錄???????????0??2020-04-06?16:53??Background-Matting-master\sample_data\background\
?????文件?????2094024??2020-04-06?16:53??Background-Matting-master\sample_data\background\0001.png
?????文件?????2409622??2020-04-06?16:53??Background-Matting-master\sample_data\background\0002.png
?????目錄???????????0??2020-04-06?16:53??Background-Matting-master\sample_data\input\
?????文件?????2170053??2020-04-06?16:53??Background-Matting-master\sample_data\input\0001_back.png
?????文件?????3047998??2020-04-06?16:53??Background-Matting-master\sample_data\input\0001_img.png
?????文件?????2170053??2020-04-06?16:53??Background-Matting-master\sample_data\input\0500_back.png
?????文件?????3341550??2020-04-06?16:53??Background-Matting-master\sample_data\input\0500_img.png
?????文件?????2170053??2020-04-06?16:53??Background-Matting-master\sample_data\input\1000_back.png
?????文件?????3474001??2020-04-06?16:53??Background-Matting-master\sample_data\input\1000_img.png
?????文件?????2170053??2020-04-06?16:53??Background-Matting-master\sample_data\input\1500_back.png
?????文件?????3044106??2020-04-06?16:53??Background-Matting-master\sample_data\input\1500_img.png
?????文件????????6045??2020-04-06?16:53??Background-Matting-master\test_background-matting_image.py
?????文件????????2766??2020-04-06?16:53??Background-Matting-master\test_pre_process.py
?????文件????????5006??2020-04-06?16:53??Background-Matting-master\test_segmentation_deeplab.py