Get Label Statistics of Image Dataset
From this SO answer

https://stackoverflow.com/a/53832130/1727543

import xml.etree.ElementTree as ET
import os

def read_content(xml_file: str):

    tree = ET.parse(xml_file)
    root = tree.getroot()

    list_with_all_boxes = []

    for boxes in root.iter('object'):

        filename = root.find('filename').text

        ymin, xmin, ymax, xmax = None, None, None, None

        for box in boxes.findall("bndbox"):
            ymin = int(box.find("ymin").text)
            xmin = int(box.find("xmin").text)
            ymax = int(box.find("ymax").text)
            xmax = int(box.find("xmax").text)

        list_with_single_boxes = [xmin, ymin, xmax, ymax]
        list_with_all_boxes.append(list_with_single_boxes)

    return {'filename':filename,'box_list': list_with_all_boxes, 'box_len':len(list_with_all_boxes)}

result = []
for file in os.listdir("path_to_Annotation_xml_folder"):
    result.append(read_content(file))


Extract more relevant features using 'EelementTree' to add your analysis.