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utils.py
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import json
import numpy as np
import os
import argparse
import re
import cssutils
from tqdm import tqdm
from string import digits
import pdb
def load_json(fname):
with open(fname, "r") as file:
data = json.load(file)
return data
def write_json(fname, data):
with open(fname, "w") as file:
json.dump(data, file, indent=4, separators=(",",":"), sort_keys=True)
def bb_relative_position(boxA, boxB):
xA_c = (boxA[0]+boxA[2])/2
yA_c = (boxA[1]+boxA[3])/2
xB_c = (boxB[0]+boxB[2])/2
yB_c = (boxB[1]+boxB[3])/2
dist = np.sqrt((xA_c - xB_c)**2 + (yA_c - yB_c)**2)
cosAB = (xA_c-xB_c) / dist
sinAB = (yB_c-yA_c) / dist
return cosAB, sinAB
def eval_spatial_relation(bbox1, bbox2):
theta = np.sqrt(2)/2
relation = 'diagonal'
if bbox1 == bbox2:
return relation
cosine, sine = bb_relative_position(bbox1, bbox2)
if cosine > theta:
relation = 'right'
elif sine > theta:
relation = 'top'
elif cosine < -theta:
relation = 'left'
elif sine < -theta:
relation = 'bottom'
return relation
def bb_intersection_over_union(boxA, boxB):
# determine the (x, y)-coordinates of the intersection rectangle
xA = max(boxA[0], boxB[0])
yA = max(boxA[1], boxB[1])
xB = min(boxA[2], boxB[2])
yB = min(boxA[3], boxB[3])
# compute the area of intersection rectangle
interArea = abs(max((xB - xA, 0)) * max((yB - yA), 0))
if interArea == 0:
return 0
# compute the area of both the prediction and ground-truth
# rectangles
boxAArea = abs((boxA[2] - boxA[0]) * (boxA[3] - boxA[1]))
boxBArea = abs((boxB[2] - boxB[0]) * (boxB[3] - boxB[1]))
# compute the intersection over union by taking the intersection
# area and dividing it by the sum of prediction + ground-truth
# areas - the interesection area
iou = interArea / float(boxAArea + boxBArea - interArea)
# return the intersection over union value
return iou
def parse_layout(string, canvas_size=64, no_integer=False):
idx = string.find(' {')
category = re.sub(r'[0-9]', '', string[:idx].replace(' ', '-'))
string = category + string[idx:]
try:
sheet = cssutils.parseString(string)
rule = sheet.cssRules[0]
bbox = [b.strip().strip(";").strip() for b in rule.style.cssText.split("\n")]
text = rule.selectorText
except:
try:
text, bbox = string.split("{")
bbox = bbox.strip().strip("}").strip().strip(";").split(";")
assert len(bbox) == 4
bbox = [b.strip().strip(";").strip() for b in bbox]
except:
return None, None
category = text.strip()
parsed_category = category.translate(category.maketrans('', '', digits)).strip()
bbox = [b.split(":") for b in bbox]
if no_integer:
bbox = {k.strip():float(v.lstrip().rstrip()) for k, v in bbox}
else:
bbox = {k.strip():int(v.lstrip().rstrip("px")) for k, v in bbox}
if sorted(bbox.keys()) != ['height', 'left', 'top', 'width']:
print(string)
bbox = [0] * 4
return parsed_category, bbox
bbox = [bbox['left'], bbox['top'], min(bbox['left']+bbox['width'], canvas_size), min(bbox['top']+bbox['height'], canvas_size)]
if bbox[0] >= canvas_size or bbox[1] >= canvas_size:
return None, None
bbox = [float(b)/canvas_size for b in bbox]
return parsed_category, bbox
def parse_3D_layout(string, unit='m'):
# cannot use cssutils due to self-defined properties
try:
text, bbox = string.split("{")
bbox = bbox.strip().strip("}").strip().strip(";").split(";")
assert len(bbox) == 7
bbox = [b.strip().strip(";").rstrip("degrees").strip() for b in bbox]
except:
return None, None
category = text.strip()
parsed_category = category.translate(category.maketrans('', '', digits)).strip()
bbox = [b.split(":") for b in bbox]
bbox = {k.strip():float(v.lstrip().rstrip(unit)) for k, v in bbox}
if sorted(bbox.keys()) != sorted(['height', 'width', 'length', 'orientation', 'left', 'top', 'depth']):
print(string)
bbox = {k:0 for k in bbox.keys()}
return parsed_category, bbox
return parsed_category, bbox
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument("-f", "--files", nargs="+")
args = parser.parse_args()
for fname in args.files:
basename = os.path.basename(fname)
dirname = os.path.dirname(fname)
assert "raw" not in basename
response = load_json(fname)
print(f"Parsing {basename}")
for r in tqdm(response):
layout = r['text'].strip().strip("\n").strip().split("\n")
assert len(layout) >= 2
r['objects'] = []
for elm in layout:
selector_text, bbox = parse_layout(elm)
if selector_text == None:
continue
if sum(bbox) == 0:
print("Failed")
r['objects'].append([selector_text, bbox])
write_json(os.path.join(dirname, "parsed_"+basename), response)