392 lines
16 KiB
Python
392 lines
16 KiB
Python
import os
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import cv2
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import matplotlib
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import numpy as np
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from bil2rgb import process_bil_files
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from classification_model.Parallel.predict_plastic import load_model, predict_with_model
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from mask import detect_microplastic_mask_from_array
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from shape_spectral import process_images
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from shape_spectral_background import process_images_background
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from extact_shape import shape_correct_background, extract_features
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import time
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matplotlib.use('TkAgg')
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# ----------------------------
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# 配置参数：直接在此修改
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# ----------------------------
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BIL_PATH = r"D:/Data/MPData5.bil"
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OUTPUT_PATH = r'D:\Data\MPData\pridict\5.bil'
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PRIMARY_MODEL_PATH = r"D:\plastic\plastic\modelsave\svm.m"
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PRIMARY_MODEL_TYPE = 'SVM'
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PRIMARY_PROCESS_METHODS1 = 'SS'
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PRIMARY_PROCESS_METHODS2 = 'None'
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SECONDARY_MODEL_PATH ="D:\plastic\plastic\modelsave\HDPELDPE_model\svm.m" # 若不需要二次分类，则保持为 None
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SECONDARY_MODEL_TYPE = 'SVM'
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SECONDARY_PROCESS_METHODS1 = 'None'
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SECONDARY_PROCESS_METHODS2 = 'None'
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SECONDARY_TARGET_CLASSES = [1, 2]
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def read_hdr_file(bil_path):
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hdr_path = bil_path.replace('.bil', '.hdr')
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with open(hdr_path, 'r') as f:
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header = f.readlines()
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samples, lines = None, None
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for line in header:
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if line.startswith('samples'):
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samples = int(line.split('=')[-1].strip())
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if line.startswith('lines'):
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lines = int(line.split('=')[-1].strip())
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return samples, lines
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def shrink_contours(bil_path, df, shrink_pixels=1):
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"""
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对DataFrame中的所有轮廓进行收缩操作，避免塑料之间的相连
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Args:
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bil_path: BIL文件路径，用于获取图像尺寸
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df: 包含contour列的DataFrame
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shrink_pixels: 收缩的像素数，默认1像素
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Returns:
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更新后的DataFrame，contour列已被收缩
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"""
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samples, lines = read_hdr_file(bil_path)
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# 创建腐蚀核
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kernel = np.ones((2 * shrink_pixels + 1, 2 * shrink_pixels + 1), np.uint8)
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# 创建临时掩膜用于处理
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temp_mask = np.zeros((lines, samples), dtype=np.uint8)
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# 创建DataFrame副本
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df = df.copy()
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# 遍历每一行，更新轮廓
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for idx, row in df.iterrows():
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contour = row['contour']
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if not isinstance(contour, (list, np.ndarray)) or len(contour) < 3:
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continue
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try:
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contour_array = np.array(contour, dtype=np.int32)
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if len(contour_array.shape) == 1:
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continue
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# 清空临时掩膜
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temp_mask.fill(0)
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# 填充轮廓
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cv2.fillPoly(temp_mask, [contour_array], 255)
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# 对掩膜进行腐蚀操作
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eroded_mask = cv2.erode(temp_mask, kernel, iterations=1)
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# 重新提取轮廓
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contours, _ = cv2.findContours(eroded_mask, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
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if len(contours) > 0:
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# 选择最大的轮廓（如果有多个）
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largest_contour = max(contours, key=cv2.contourArea)
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# 转换为列表格式，保持与原始格式一致
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if len(largest_contour) >= 3:
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updated_contour = largest_contour.reshape(-1, 2).tolist()
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df.at[idx, 'contour'] = updated_contour
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except Exception as e:
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# 如果处理失败，保留原始轮廓
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continue
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return df
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def save_envi_classification(bil_path, df, savepath):
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samples, lines = read_hdr_file(bil_path)
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classification_result = np.zeros((lines, samples), dtype=np.uint16)
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for _, row in df.iterrows():
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contour = row['contour']
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prediction = int(row['Predictions']) + 1
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contour = np.array(contour, dtype=np.int32)
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# 先将 classification_result 中的 10 和 11 替换为 0
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# classification_result[(classification_result == 10)] = 0
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cv2.fillPoly(classification_result, [contour], prediction)
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output_path = savepath
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with open(output_path, 'wb') as f:
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classification_result.tofile(f)
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header_content = f"""ENVI
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description = {{
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Classification Result.}}
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samples = {samples}
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lines = {lines}
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bands = 1
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header offset = 0
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file type = ENVI Standard
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data type = 2
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interleave = bil
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classes = 11
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class = {{ background, ABS, HDPE, LDPE, PA6, PET, PP, PS, PTFE, PVC,background2 }}
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single pixel area = 0.000036
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unit = mm2
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byte order = 0
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wavelength units = nm
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"""
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filename, ext = os.path.splitext(savepath)
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# 替换扩展名为 '.hdr'
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header_filename = filename + '.hdr'
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with open(header_filename, 'w') as header_file:
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header_file.write(header_content)
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def change_hdr_file(bil_path):
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# 定义要追加的波长信息
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wavelength_info = """wavelength = {898.82, 903.64, 908.46, 913.28, 918.1, 922.92, 927.75, 932.57, 937.4, 942.22, 947.05, 951.88, 956.71, 961.54, 966.38, 971.21, 976.05, 980.88, 985.72, 990.56, 995.4, 1000.2, 1005.1, 1009.9, 1014.8, 1019.6, 1024.5, 1029.3, 1034.2, 1039, 1043.9, 1048.7, 1053.6, 1058.4, 1063.3, 1068.2, 1073, 1077.9, 1082.7, 1087.6, 1092.5, 1097.3, 1102.2, 1107.1, 1111.9, 1116.8, 1121.7, 1126.6, 1131.4, 1136.3, 1141.2, 1146.1, 1150.9, 1155.8, 1160.7, 1165.6, 1170.5, 1175.4, 1180.2, 1185.1, 1190, 1194.9, 1199.8, 1204.7, 1209.6, 1214.5, 1219.4, 1224.3, 1229.2, 1234.1, 1239, 1243.9, 1248.8, 1253.7, 1258.6, 1263.5, 1268.4, 1273.3, 1278.2, 1283.1, 1288.1, 1293, 1297.9, 1302.8, 1307.7, 1312.6, 1317.6, 1322.5, 1327.4, 1332.3, 1337.3, 1342.2, 1347.1, 1352, 1357, 1361.9, 1366.8, 1371.8, 1376.7, 1381.6, 1386.6, 1391.5, 1396.5, 1401.4, 1406.3, 1411.3, 1416.2, 1421.2, 1426.1, 1431.1, 1436, 1441, 1445.9, 1450.9, 1455.8, 1460.8, 1465.8, 1470.7, 1475.7, 1480.6, 1485.6, 1490.6, 1495.5, 1500.5, 1505.5, 1510.4, 1515.4, 1520.4, 1525.3, 1530.3, 1535.3, 1540.3, 1545.2, 1550.2, 1555.2, 1560.2, 1565.2, 1570.1, 1575.1, 1580.1, 1585.1, 1590.1, 1595.1, 1600.1, 1605.1, 1610, 1615, 1620, 1625, 1630, 1635, 1640, 1645, 1650, 1655, 1660, 1665, 1670.1, 1675.1, 1680.1, 1685.1, 1690.1, 1695.1, 1700.1, 1705.1, 1710.2, 1715.2, 1720.2}"""
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# 将.bil路径转换为.hdr路径
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hdr_path = os.path.splitext(bil_path)[0] + '.hdr'
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# 检查.hdr文件是否存在
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if not os.path.exists(hdr_path):
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print(f"错误: 找不到对应的HDR文件: {hdr_path}")
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return
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# 读取文件内容
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with open(hdr_path, 'r') as file:
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content = file.read()
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# 检查是否已包含波长信息
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if 'wavelength' in content:
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print(f"File {os.path.basename(hdr_path)} already contains wavelength information; no changes needed.")
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return
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# 检查文件是否以换行符结尾
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needs_newline = not content.endswith('\n')
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# 追加波长信息
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with open(hdr_path, 'a') as file:
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if needs_newline:
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file.write('\n') # 确保新内容从新行开始
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file.write(wavelength_info + '\n')
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print(f"Successfully added wavelength information to file: {os.path.basename(hdr_path)}")
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def main():
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bil_path = BIL_PATH
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output_path = OUTPUT_PATH
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model_path = PRIMARY_MODEL_PATH
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# 记录总开始时间
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total_start_time = time.time()
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# 处理BIL文件生成RGB图像
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print("Processing BIL file to generate RGB image...\n")
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rgb_img = process_bil_files(bil_path)
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# 修改hdr
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change_hdr_file(bil_path)
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segmentation_start_time = time.time()
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# 生成掩膜，mask为16位的塑料标签掩膜
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print("Generating mask ...\n")
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mask, filter_mask_original = detect_microplastic_mask_from_array(
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image=rgb_img, # 直接传入cv2.imread的结果
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filter_method='threshold',
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diameter=None,
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flow_threshold=0.4,
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cellprob_threshold=-1
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)
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# 提取特征
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print("Extracting features from BIL file...\n")
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df = process_images(bil_path, mask)
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# 背景校正
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print("Applying background correction...\n")
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df_correct = process_images_background(bil_path, mask)
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df.iloc[:, 1:169] = df.iloc[:, 1:169].div(df_correct, axis=1)
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# 数据清理
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print("Cleaning data...\n")
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df = df.dropna()
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df = df[df['contour'].apply(lambda x: len(x) > 1 if isinstance(x, list) else True)]
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df = df[df['area'] >= 500]
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# 使用pandas列选择：获取要删除的列名（从第 94 列到第 118 列，索引从0开始）
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cols_to_remove = df.columns[np.r_[87:110, -10:-1]]
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# cols_to_remove = df.columns[87:110]
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# 删除指定列，保持DataFrame结构
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df = df.drop(columns=cols_to_remove)
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segmentation_time = time.time() - segmentation_start_time
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# 使用pandas列选择：选择从第二列开始的所有列（跳过第一列，通常是'Sample ID'或'filename'）
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# 保持DataFrame结构，不转换为numpy数组（.values会丢失列名和DataFrame结构）
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df = df.iloc[:, :]
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# 预测分类（分类阶段）
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classification_start_time = time.time()
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# 预测分类
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print("Predicting classes...\n")
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loaded_model = load_model(model_path)
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df_pre = predict_with_model(
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df,
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model_path,
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model_type=PRIMARY_MODEL_TYPE,
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ProcessMethods1=PRIMARY_PROCESS_METHODS1,
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ProcessMethods2=PRIMARY_PROCESS_METHODS2
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)
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# 对HDPE和LDPE进行二次分类
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# 图像信息的背景矫正
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df_correct = shape_correct_background(bil_path, mask, filter_mask_original)
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# 从第一次分类结果中提取SECONDARY_TARGET_CLASSES类别的掩膜轮廓
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target_classes = set(SECONDARY_TARGET_CLASSES or [])
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mask_secondary = df_pre['Predictions'].isin(target_classes)
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if mask_secondary.any():
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# 创建新的掩膜mask_second，只包含目标类别的轮廓
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mask_second = np.zeros_like(mask, dtype=np.uint16)
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for idx in df_pre[mask_secondary].index:
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contour = df_pre.loc[idx, 'contour']
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if isinstance(contour, list) and len(contour) > 0:
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contour_array = np.array(contour, dtype=np.int32)
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cv2.fillPoly(mask_second, [contour_array], idx + 1) # 使用索引+1作为标签
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# 提取特征
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df_shape = extract_features(df_correct, mask_second)
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# 确保使用第2到13列作为模型输入特征
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if len(df_shape.columns) >= 13:
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df_shape = df_shape.iloc[:, :13]
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else:
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print("No samples from target classes found; skipping secondary classification.\n")
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return
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# 二次分类：使用第二个模型预测并更新分类结果
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if SECONDARY_MODEL_PATH:
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print(f"Running secondary classification for classes: {sorted(target_classes)}")
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df_secondary = predict_with_model(
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df_shape,
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SECONDARY_MODEL_PATH,
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model_type=SECONDARY_MODEL_TYPE,
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ProcessMethods1=SECONDARY_PROCESS_METHODS1,
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ProcessMethods2=SECONDARY_PROCESS_METHODS2
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)
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df_pre.loc[mask_secondary, 'Predictions'] = df_secondary['Predictions'].values + 1
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else:
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print("Secondary model path not provided; skipping secondary classification.\n")
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# 识别类别7中的背景阴影误判：通过边界清晰度特征
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# 真正的类别7边界清晰，背景阴影边界模糊
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class_7_mask = df_pre['Predictions'] == 7
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if class_7_mask.any():
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print(f"Processing {class_7_mask.sum()} samples with class 7 to identify background shadows...\n")
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# 将PIL Image转换为numpy数组
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if hasattr(rgb_img, 'mode'): # 检查是否是PIL Image
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rgb_img_array = np.array(rgb_img)
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else:
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rgb_img_array = rgb_img
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# 转换为灰度图（用于计算梯度）
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if len(rgb_img_array.shape) == 3:
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gray_img = cv2.cvtColor(rgb_img_array, cv2.COLOR_RGB2GRAY)
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else:
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gray_img = rgb_img_array
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# 计算梯度图（使用Sobel算子）
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grad_x = cv2.Sobel(gray_img, cv2.CV_64F, 1, 0, ksize=3)
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grad_y = cv2.Sobel(gray_img, cv2.CV_64F, 0, 1, ksize=3)
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gradient_magnitude = np.sqrt(grad_x ** 2 + grad_y ** 2)
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# 先收集所有类别7样本的边缘梯度值，用于确定阈值
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all_class7_gradients = []
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valid_indices = []
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for idx in df_pre[class_7_mask].index:
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try:
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contour = df_pre.loc[idx, 'contour']
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if not isinstance(contour, (list, np.ndarray)) or len(contour) < 3:
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continue
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contour_array = np.array(contour, dtype=np.int32)
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if len(contour_array.shape) == 1:
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continue
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mask_img = np.zeros(gray_img.shape, dtype=np.uint8)
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cv2.drawContours(mask_img, [contour_array], -1, 255, thickness=2)
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edge_gradients = gradient_magnitude[mask_img > 0]
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if len(edge_gradients) > 0:
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all_class7_gradients.extend(edge_gradients)
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valid_indices.append(idx)
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except:
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continue
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# 基于类别7样本的梯度分布确定阈值
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# 使用类别7样本梯度值的中位数作为基准，低于某个分位数（如30%）的认为是背景阴影
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if len(all_class7_gradients) > 0:
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gradient_threshold = np.percentile(all_class7_gradients, 30) # 使用类别7样本梯度值的30%分位数
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else:
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gradient_threshold = np.percentile(gradient_magnitude, 30) # 如果没有有效样本，使用整张图的30%分位数
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print(f"Gradient threshold for class 7: {gradient_threshold:.2f}\n")
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# 处理每个类别7的样本，判断是否为背景阴影
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indices_to_update = []
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for idx in valid_indices:
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try:
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contour = df_pre.loc[idx, 'contour']
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contour_array = np.array(contour, dtype=np.int32)
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# 创建轮廓掩膜（线宽为2像素，用于提取边缘）
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mask_img = np.zeros(gray_img.shape, dtype=np.uint8)
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cv2.drawContours(mask_img, [contour_array], -1, 255, thickness=2)
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# 提取轮廓边缘的梯度值
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edge_gradients = gradient_magnitude[mask_img > 0]
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if len(edge_gradients) == 0:
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continue
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# 计算轮廓边缘的平均梯度强度
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mean_gradient = np.mean(edge_gradients)
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# 如果平均梯度强度低于阈值，认为是背景阴影（边界模糊）
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if mean_gradient < gradient_threshold:
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indices_to_update.append(idx)
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print(
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f"Sample {idx}: mean_gradient={mean_gradient:.2f}, threshold={gradient_threshold:.2f} -> identified as background shadow")
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except Exception as e:
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print(f"Error processing sample at index {idx}: {str(e)}")
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continue
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# 将背景阴影的类别7改为类别9
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if indices_to_update:
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df_pre.loc[indices_to_update, 'Predictions'] = 9
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print(f"Updated {len(indices_to_update)} samples from class 7 to class 9 (background shadows)\n")
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else:
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print("No samples needed to be updated from class 7\n")
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classification_time = time.time() - classification_start_time
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df_pre = shrink_contours(bil_path, df_pre, shrink_pixels=1)
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# 保存ENVI分类结果
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print("Saving ENVI classification results...\n")
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save_envi_classification(bil_path, df_pre, output_path)
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print(f"ENVI classification results saved to: {output_path}")
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# 计算总耗时
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total_time = time.time() - total_start_time
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# 打印耗时统计
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print(f"\n{'=' * 60}")
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print(f"处理完成")
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print(f"{'=' * 60}")
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print(f"分割耗时: {segmentation_time:.2f} 秒")
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print(f"分类耗时: {classification_time:.2f} 秒")
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print(f"总耗时: {total_time:.2f} 秒")
|
||
print(f"{'=' * 60}")
|
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print(f"结果已保存至: {output_path}")
|
||
|
||
if __name__ == "__main__":
|
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main() |