179 lines
4.9 KiB
Python
179 lines
4.9 KiB
Python
import os
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from pathlib import Path
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import cv2
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import numpy as np
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import platform
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from rknnlite.api import RKNNLite
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# ---------------------------
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# 类别映射
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# ---------------------------
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CLASS_NAMES = {
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0: "未堆料",
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1: "小堆料",
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2: "大堆料",
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3: "未浇筑满",
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4: "浇筑满"
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}
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# ---------------------------
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# RKNN 全局实例（只加载一次）
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# ---------------------------
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_global_rknn = None
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DEVICE_COMPATIBLE_NODE = '/proc/device-tree/compatible'
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# =====================================================
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# RKNN MODEL
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# =====================================================
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def init_rknn_model(model_path):
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global _global_rknn
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if _global_rknn is not None:
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return _global_rknn
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rknn = RKNNLite(verbose=False)
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ret = rknn.load_rknn(model_path)
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if ret != 0:
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raise RuntimeError(f"Load RKNN failed: {ret}")
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ret = rknn.init_runtime(core_mask=RKNNLite.NPU_CORE_0)
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if ret != 0:
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raise RuntimeError(f"Init runtime failed: {ret}")
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_global_rknn = rknn
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print(f"[INFO] RKNN 模型加载成功: {model_path}")
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return rknn
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# ---------------------------
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# 图像预处理（统一 640×640）
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# ---------------------------
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def preprocess(img, size=(640, 640)):
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img = cv2.resize(img, size)
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img = np.expand_dims(img, 0)
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return img
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# ---------------------------
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# 单次 RKNN 分类
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# ---------------------------
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def rknn_classify(img_resized, model_path):
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rknn = init_rknn_model(model_path)
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input_tensor = preprocess(img_resized)
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outs = rknn.inference([input_tensor])
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pred = outs[0].reshape(-1)
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class_id = int(np.argmax(pred))
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return class_id, pred.astype(float)
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# =====================================================
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# ROI 逻辑
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# =====================================================
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def load_single_roi(txt_path):
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"""
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只加载第一个 ROI
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格式: x,y,w,h
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"""
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if not os.path.exists(txt_path):
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raise RuntimeError(f"ROI 文件不存在: {txt_path}")
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with open(txt_path) as f:
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for line in f:
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s = line.strip()
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if not s:
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continue
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try:
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x, y, w, h = map(int, s.split(','))
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return (x, y, w, h)
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except:
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raise RuntimeError(f"❌ ROI 格式错误: {s}")
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raise RuntimeError("❌ ROI 文件为空")
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def crop_and_resize_single(img, roi, target_size=640):
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x, y, w, h = roi
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h_img, w_img = img.shape[:2]
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if x < 0 or y < 0 or x + w > w_img or y + h > h_img:
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raise RuntimeError(f"ROI 超出图像范围: {roi}")
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roi_img = img[y:y + h, x:x + w]
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roi_resized = cv2.resize(roi_img, (target_size, target_size), interpolation=cv2.INTER_AREA)
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return roi_resized
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# =====================================================
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# class1/class2 加权分类增强
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# =====================================================
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def weighted_small_large(pred, threshold=0.4, w1=0.3, w2=0.7):
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p1 = float(pred[1])
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p2 = float(pred[2])
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total = p1 + p2
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score = (w1 * p1 + w2 * p2) / total if total > 0 else 0.0
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final_class = "大堆料" if score >= threshold else "小堆料"
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return final_class, score, p1, p2
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# =====================================================
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# 只处理一个 ROI
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# =====================================================
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def classify_frame_with_single_roi(model_path, frame, roi_file, threshold=0.4):
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"""
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输入:
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- frame: BGR 图像
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- model_path: RKNN 模型
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- roi_file: 只包含一个 ROI 的 txt 文件
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- threshold: class1/class2 判断阈值
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输出:
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{ "class": 类别, "score": x, "p1": x, "p2": x }
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"""
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if frame is None or not isinstance(frame, np.ndarray):
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raise RuntimeError("❌ classify_frame_with_single_roi 传入的 frame 无效")
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# ------- 只加载第一个 ROI -------
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roi = load_single_roi(roi_file)
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# ------- 裁剪并 resize -------
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roi_img = crop_and_resize_single(frame, roi)
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# ------- RKNN 推理 -------
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class_id, pred = rknn_classify(roi_img, model_path)
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class_name = CLASS_NAMES.get(class_id, f"未知类别({class_id})")
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# ------- class1/class2 加权处理 -------
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if class_id in [1, 2]:
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final_class, score, p1, p2 = weighted_small_large(pred, threshold)
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else:
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final_class = class_name
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score = float(pred[class_id])
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p1, p2 = float(pred[1]), float(pred[2])
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return {
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"class": final_class,
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"score": round(score, 4),
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"p1": round(p1, 4),
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"p2": round(p2, 4)
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}
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# =====================================================
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# 示例调用
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# =====================================================
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if __name__ == "__main__":
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model_path = "yiliao_cls.rknn"
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roi_file = "./roi_coordinates/1_rois.txt"
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frame = cv2.imread("./test_image/1.png")
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result = classify_frame_with_single_roi(model_path, frame, roi_file)
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print(result)
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