74 lines
2.8 KiB
Python
74 lines
2.8 KiB
Python
from lxml import etree
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import cv2
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import numpy as np
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# 读取 xml 文件信息，并返回字典形式
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def parse_xml_to_dict(xml):
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if len(xml) == 0: # 遍历到底层，直接返回 tag对应的信息
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return {xml.tag: xml.text}
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result = {}
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for child in xml:
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child_result = parse_xml_to_dict(child) # 递归遍历标签信息
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if child.tag != 'object':
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result[child.tag] = child_result[child.tag]
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else:
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if child.tag not in result: # 因为object可能有多个，所以需要放入列表里
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result[child.tag] = []
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result[child.tag].append(child_result[child.tag])
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return {xml.tag: result}
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# xml 标注文件的可视化
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def xmlShow(img, xml, save=True):
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image = cv2.imdecode(np.fromfile(img, dtype=np.uint8), -1)
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with open(xml, encoding='gb18030', errors='ignore') as fid: # 防止出现非法字符报错
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xml_str = fid.read()
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xml = etree.fromstring(xml_str)
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data = parse_xml_to_dict(xml)["annotation"] # 读取 xml文件信息
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ob = [] # 存放目标信息
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try:
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for i in data['object']: # 提取检测框
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name = str(i['name']) # 检测的目标类别
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bbox = i['bndbox']
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xmin = int(bbox['xmin'])
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ymin = int(bbox['ymin'])
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xmax = int(bbox['xmax'])
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ymax = int(bbox['ymax'])
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tmp = [name, xmin, ymin, xmax, ymax] # 单个检测框
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ob.append(tmp)
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except:
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return
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# 绘制检测框
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for name, x1, y1, x2, y2 in ob:
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cv2.rectangle(image, (x1, y1), (x2, y2), color=(255, 0, 0), thickness=2) # 绘制矩形框
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cv2.putText(image, name, (x1, y1 - 10), fontFace=cv2.FONT_HERSHEY_SIMPLEX,
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fontScale=0.5, thickness=1, color=(0, 0, 255))
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# 保存图像
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if save:
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cv2.imwrite('test_images/result1.jpg', image)
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# # 展示图像
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# cv2.imshow('test', image)
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# cv2.waitKey()
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# cv2.destroyAllWindows()
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if __name__ == "__main__":
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# #-------------------------------- 数据集1----------------------------------------
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# img_path = 'E:/haotian/YOLO安全帽手套检测数据集(含1000张图片)+对应voc、coco和yolo三种格式标签+划分脚本+训练教程/datasets/images/233.jpg' # 传入图片
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#
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# labels_path = 'E:/haotian/YOLO安全帽手套检测数据集(含1000张图片)+对应voc、coco和yolo三种格式标签+划分脚本+训练教程/datasets/Annotaions_PH/233.xml'
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# #-----------------------------------end1-------------------------------------
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labels_path = 'fire_smoke/annotations/smoke_000222.xml'
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img_path = 'fire_smoke/images/smoke_000222.jpg'
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xmlShow(img=img_path, xml=labels_path, save=True) |