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json2csv_vector.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Wed Aug 4 11:46:08 2021
@author: admin
"""
import os
import csv
import json
import numpy as np
def get_angle_from_vector(v1):
'''
Parameters
----------
v1 : list
Returns
-------
angle : float
Examples
-------
>>> get_angle_from_vector([1, 1])
45
>>> get_angle_from_vector([-1, 1])
-45
>>> get_angle_from_vector([1, -1])
135
>>> get_angle_from_vector([-1, -1])
-135
'''
v0 = np.array([0, 1])
v1 = np.array(v1)
# 1 norm
norm = np.linalg.norm(v0) * np.linalg.norm(v1)
# 2 dot product
cosine = np.dot(v0, v1) / norm
radian = np.arccos(cosine)
angle = np.rad2deg(radian)
# 3 cross product
rho = np.rad2deg(np.arcsin(np.cross(v0, v1) / norm))
if rho>0:
angle *= -1
return angle
def get_angle_from_json(fn):
with open(fn) as f:
data_dict = json.load(f)
p_start, p_end = data_dict['shapes'][0]['points']
p_start[1] *= -1
p_end[1] *= -1
v1 = [p_end[0] - p_start[0], p_end[1] - p_start[1]]
angle = get_angle_from_vector(v1)
return angle
def get_vector_from_json(fn):
with open(fn) as f:
data_dict = json.load(f)
p_start, p_end = data_dict['shapes'][0]['points']
p_start[1] *= -1
p_end[1] *= -1
v = [p_end[0] - p_start[0], p_end[1] - p_start[1]]
v = np.array(v)
norm = np.linalg.norm(v)
v /= norm
return v
def write_final_csv(path_dir):
csv_name = path_dir + '.csv'
filenames = os.listdir(path_dir)
lines = []
for fn in filenames:
if fn[-4:] == 'json':
fn = os.path.join(path_dir, fn)
angle = get_angle_from_json(fn)
fn = fn[:-4] + 'png'
line = [fn, angle]
if os.path.exists(fn):
lines.append(line)
else:
print('img not exists', fn)
with open(csv_name, mode='w') as f:
writer = csv.writer(f)
for line in lines:
writer.writerow(line)
def write_final_csv_vector(path_dir):
csv_name = path_dir + '_vector.csv'
filenames = os.listdir(path_dir)
lines = []
for fn in filenames:
if fn[-4:] == 'json':
fn = os.path.join(path_dir, fn)
angle = get_angle_from_json(fn)
vector = get_vector_from_json(fn)
fn = fn[:-4] + 'png'
line = [fn, angle, vector[0], vector[1]]
if os.path.exists(fn):
lines.append(line)
else:
print('img not exists', fn)
with open(csv_name, mode='w') as f:
writer = csv.writer(f)
for line in lines:
writer.writerow(line)
if __name__ == '__main__':
fn = '0805_angle/0_1_I100710709_11_0.json'
fn = 'raw/wrong286_labeled/0_1_I105173993_696_2_0.json'
fn = 'raw/wrong286_labeled/0_1_I105344732_1_2_0.json'
fn = 'raw/wrong286_labeled/0_1_I93237264_1_6_0.json'
fn = 'raw/wrong286_labeled/0_1_I94079959_2_0.json'
angle = get_angle_from_json(fn)
vector = get_vector_from_json(fn)
print(fn)
print(angle, vector)
path_dir = '/home/Amoko/data/val_1_good_filter_bi_1of2'
path_dir = '/home/Amoko/data/0804_angle'
path_dir = '/home/Amoko/data/0805_angle'
path_dir = '/home/Amoko/data/0813_angle'
#path_dir = '/home/Amoko/data/0813_angle_fine'
#write_final_csv(path_dir)
#write_final_csv_vector(path_dir)