mirror of https://github.com/AlexeyAB/darknet.git
57 lines
2.0 KiB
Python
57 lines
2.0 KiB
Python
import xml.etree.ElementTree as ET
|
|
import pickle
|
|
import os
|
|
from os import listdir, getcwd
|
|
from os.path import join
|
|
|
|
sets=[('2012', 'val'),('2007', 'test')]
|
|
|
|
classes = ["aeroplane", "bicycle", "bird", "boat", "bottle", "bus", "car", "cat", "chair", "cow", "diningtable", "dog", "horse", "motorbike", "person", "pottedplant", "sheep", "sofa", "train", "tvmonitor"]
|
|
|
|
|
|
def convert(size, box):
|
|
dw = 1./size[0]
|
|
dh = 1./size[1]
|
|
x = (box[0] + box[1])/2.0
|
|
y = (box[2] + box[3])/2.0
|
|
w = box[1] - box[0]
|
|
h = box[3] - box[2]
|
|
x = x*dw
|
|
w = w*dw
|
|
y = y*dh
|
|
h = h*dh
|
|
return (x,y,w,h)
|
|
|
|
def convert_annotation(year, image_id):
|
|
in_file = open('VOCdevkit/VOC%s/Annotations/%s.xml'%(year, image_id))
|
|
out_file = open('VOCdevkit/VOC%s/labels/difficult_%s.txt'%(year, image_id), 'w')
|
|
tree=ET.parse(in_file)
|
|
root = tree.getroot()
|
|
size = root.find('size')
|
|
w = int(size.find('width').text)
|
|
h = int(size.find('height').text)
|
|
|
|
for obj in root.iter('object'):
|
|
difficult = obj.find('difficult').text
|
|
cls = obj.find('name').text
|
|
if cls not in classes or int(difficult) == 0:
|
|
continue
|
|
cls_id = classes.index(cls)
|
|
xmlbox = obj.find('bndbox')
|
|
b = (float(xmlbox.find('xmin').text), float(xmlbox.find('xmax').text), float(xmlbox.find('ymin').text), float(xmlbox.find('ymax').text))
|
|
bb = convert((w,h), b)
|
|
out_file.write(str(cls_id) + " " + " ".join([str(a) for a in bb]) + '\n')
|
|
|
|
wd = getcwd()
|
|
|
|
for year, image_set in sets:
|
|
if not os.path.exists('VOCdevkit/VOC%s/labels/'%(year)):
|
|
os.makedirs('VOCdevkit/VOC%s/labels/'%(year))
|
|
image_ids = open('VOCdevkit/VOC%s/ImageSets/Main/%s.txt'%(year, image_set)).read().strip().split()
|
|
list_file = open('difficult_%s_%s.txt'%(year, image_set), 'w')
|
|
for image_id in image_ids:
|
|
list_file.write('%s/VOCdevkit/VOC%s/JPEGImages/difficult_%s.jpg\n'%(wd, year, image_id))
|
|
convert_annotation(year, image_id)
|
|
list_file.close()
|
|
|