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import numpy as np
import json
import pandas as pd
path = '../dataset/test/test1/annotations.csv'
classpath = '../dataset/e_label2.csv'
save_json_path = 'testcoco.json'
data = pd.read_csv(path, names=['filename', 'width', 'height', 'xmin', 'ymin', 'xmax', 'ymax', 'class'])
images = []
categories = []
annotations = []
category = {}
category["supercategory"] = 'none'
category["id"] = 0
category["name"] = 'None'
categories.append(category)
data['fileid'] = data['filename'].astype('category').cat.codes
data['categoryid']= pd.Categorical(data['class'],ordered= True).codes
data['categoryid'] = data['categoryid']+1
data['annid'] = data.index
def image(row):
image = {}
image["height"] = row.height
image["width"] = row.width
image["id"] = row.fileid
image["file_name"] = row.filename
return image
def category(row):
category = {}
category["supercategory"] = 'None'
category["id"] = row.categoryid
category["name"] = row[2]
return category
def annotation(row):
annotation = {}
area = (row.xmax -row.xmin)*(row.ymax - row.ymin)
annotation["segmentation"] = []
annotation["iscrowd"] = 0
annotation["area"] = area
annotation["image_id"] = row.fileid
annotation["bbox"] = [row.xmin, row.ymin, row.xmax -row.xmin,row.ymax-row.ymin ]
annotation["category_id"] = row.categoryid
annotation["id"] = row.annid
return annotation
for row in data.itertuples():
annotations.append(annotation(row))
imagedf = data.drop_duplicates(subset=['fileid']).sort_values(by='fileid')
for row in imagedf.itertuples():
images.append(image(row))
catdf = data.drop_duplicates(subset=['categoryid']).sort_values(by='categoryid')
for row in catdf.itertuples():
categories.append(category(row))
data_coco = {}
data_coco["images"] = images
data_coco["categories"] = categories
data_coco["annotations"] = annotations
json.dump(data_coco, open(save_json_path, "w"), indent=4)
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