| import xml.etree.ElementTree as ET |
| import pickle |
| import os |
| from os import listdir, getcwd |
| from os.path import join |
|
|
| sets=[('2012', 'train'), ('2012', 'val'), ('2007', 'train'), ('2007', '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 - 1 |
| y = (box[2] + box[3])/2.0 - 1 |
| 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/%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)==1: |
| 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('%s_%s.txt'%(year, image_set), 'w') |
| for image_id in image_ids: |
| list_file.write('%s/VOCdevkit/VOC%s/JPEGImages/%s.jpg\n'%(wd, year, image_id)) |
| convert_annotation(year, image_id) |
| list_file.close() |
|
|
| os.system("cat 2007_train.txt 2007_val.txt 2012_train.txt 2012_val.txt > train.txt") |
| os.system("cat 2007_train.txt 2007_val.txt 2007_test.txt 2012_train.txt 2012_val.txt > train.all.txt") |
|
|
|
|
