103 lines
3.7 KiB
Python
103 lines
3.7 KiB
Python
import cv2
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import os
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import numpy as np
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from ultralytics import YOLO
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IMG_EXTENSIONS = {'.jpg', '.jpeg', '.png', '.bmp', '.tif', '.tiff', '.webp'}
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def process_obb_images(model_path, image_dir, output_dir="./inference_results", conf_thresh=0.15, imgsz=640):
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"""
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批量处理图像的 OBB 推理，计算每张图像检测目标的主方向和夹角。
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输入：
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model_path: YOLO 权重路径
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image_dir: 图像文件夹路径
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output_dir: 输出结果保存路径
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conf_thresh: 置信度阈值
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imgsz: 输入图像大小
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输出：
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results_dict: {image_filename: {'angles_deg': [...], 'pairwise_angles_deg': [...]}}
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"""
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os.makedirs(output_dir, exist_ok=True)
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results_dict = {}
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print("加载 YOLO 模型...")
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model = YOLO(model_path)
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print("✅ 模型加载完成")
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# 获取图像文件
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image_files = [f for f in os.listdir(image_dir) if os.path.splitext(f.lower())[1] in IMG_EXTENSIONS]
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if not image_files:
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print(f"❌ 未找到图像文件：{image_dir}")
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return results_dict
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print(f"发现 {len(image_files)} 张图像待处理")
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for img_filename in image_files:
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img_path = os.path.join(image_dir, img_filename)
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print(f"\n正在处理：{img_filename}")
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img = cv2.imread(img_path)
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if img is None:
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print(f"❌ 跳过：无法读取图像 {img_path}")
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continue
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# 推理 OBB
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results = model(img, save=False, imgsz=imgsz, conf=conf_thresh, mode='obb')
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result = results[0]
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annotated_img = result.plot()
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# 保存可视化
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save_path = os.path.join(output_dir, "detected_" + img_filename)
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cv2.imwrite(save_path, annotated_img)
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print(f"✅ 推理结果已保存至: {save_path}")
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# 提取旋转角
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boxes = result.obb
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angles_deg = []
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if boxes is None or len(boxes) == 0:
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print("❌ 该图像中未检测到任何目标")
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else:
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for i, box in enumerate(boxes):
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cls = int(box.cls.cpu().numpy()[0])
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conf = box.conf.cpu().numpy()[0]
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cx, cy, w, h, r_rad = box.xywhr.cpu().numpy()[0]
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direction = r_rad if w >= h else r_rad + np.pi / 2
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direction = direction % np.pi
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angle_deg = np.degrees(direction)
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angles_deg.append(angle_deg)
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print(f" Box {i + 1}: Class={cls}, Conf={conf:.3f}, 主方向={angle_deg:.2f}°")
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# 两两夹角
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pairwise_angles_deg = []
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if len(angles_deg) >= 2:
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for i in range(len(angles_deg)):
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for j in range(i + 1, len(angles_deg)):
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diff_rad = abs(np.radians(angles_deg[i]) - np.radians(angles_deg[j]))
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min_diff_rad = min(diff_rad, np.pi - diff_rad)
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pairwise_angles_deg.append(np.degrees(min_diff_rad))
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print(f" Box {i + 1} 与 Box {j + 1} 夹角: {np.degrees(min_diff_rad):.2f}°")
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# 保存每张图像结果
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results_dict[img_filename] = {
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"angles_deg": angles_deg,
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"pairwise_angles_deg": pairwise_angles_deg
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}
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print("\n所有图像处理完成！")
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return results_dict
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# ------------------- 测试调用 -------------------
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if __name__ == "__main__":
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MODEL_PATH = r'best.pt'
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IMAGE_SOURCE_DIR = r"./test_image"
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OUTPUT_DIR = "./inference_results"
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results = process_obb_images(MODEL_PATH, IMAGE_SOURCE_DIR, OUTPUT_DIR)
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for img_name, info in results.items():
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print(f"\n {img_name}:")
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print(f"主方向角度列表: {info['angles_deg']}")
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print(f"两两夹角列表: {info['pairwise_angles_deg']}")
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