视频测试

infer_video.py

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+import os
+import cv2
+import numpy as np
+import time
+from ais_bench.infer.interface import InferSession
+
+# ==================== 模拟测试硬编码配置 ====================
+MODEL_PATH = "./yolo26_8t.om"  # 你的 YOLO26 模型路径
+VIDEO_PATH = "./drone_test.mp4"  # 用于模拟相机的测试视频文件
+CONF_THRESHOLD = 0.25  # 置信度阈值
+
+
+# ============================================================
+
+class YOLO26UAVInfer:
+    def __init__(self, model_path, device_id=0):
+        if not os.path.exists(model_path):
+            raise FileNotFoundError(f"找不到模型文件: {model_path}")
+        self.session = InferSession(device_id, model_path)
+        self.input_width = 640
+        self.input_height = 640
+
+    def letterbox(self, img, new_shape=(640, 640), color=(114, 114, 114)):
+        shape = img.shape[:2]
+        r = min(new_shape[0] / shape[0], new_shape[1] / shape[1])
+        new_unpad = (int(round(shape[1] * r)), int(round(shape[0] * r)))
+        dw, dh = new_shape[1] - new_unpad[0], new_shape[0] - new_unpad[1]
+        left, top = dw // 2, dh // 2
+        right, bottom = dw - left, dh - top
+        if shape[::-1] != new_unpad:
+            img = cv2.resize(img, new_unpad, interpolation=cv2.INTER_LINEAR)
+        img = cv2.copyMakeBorder(img, top, bottom, left, right, cv2.BORDER_CONSTANT, value=color)
+        return img, r, (left, top)
+
+    def preprocess_frame(self, img_bgr):
+        self.original_height, self.original_width = img_bgr.shape[:2]
+        img_rgb = cv2.cvtColor(img_bgr, cv2.COLOR_BGR2RGB)
+        img_resized, self.ratio, (self.pad_left, self.pad_top) = self.letterbox(
+            img_rgb, (self.input_width, self.input_height)
+        )
+        img_input = (img_resized.astype(np.float32) / 255.0).astype(np.float32)
+        img_input = np.ascontiguousarray(np.transpose(img_input, (2, 0, 1))[np.newaxis, :, :, :])
+        return img_input
+
+    def infer(self, img_input):
+        return self.session.infer([img_input])
+
+    def postprocess(self, infer_result, conf_threshold):
+        detections = []
+        output = infer_result[0] if isinstance(infer_result, (list, tuple)) else infer_result
+        if output.ndim == 3: output = output[0]
+        for det in output:
+            confidence = det[4]
+            if confidence < conf_threshold: continue
+            x1_scale, y1_scale, x2_scale, y2_scale = det[0], det[1], det[2], det[3]
+            cls_id = int(det[5])
+            x1 = max(0, min((x1_scale - self.pad_left) / self.ratio, self.original_width))
+            y1 = max(0, min((y1_scale - self.pad_top) / self.ratio, self.original_height))
+            x2 = max(0, min((x2_scale - self.pad_left) / self.ratio, self.original_width))
+            y2 = max(0, min((y2_scale - self.pad_top) / self.ratio, self.original_height))
+            detections.append([x1, y1, x2, y2, confidence, cls_id])
+        return detections
+
+
+if __name__ == "__main__":
+    print("====== 启动香橙派无人机检测算法模拟测试 ======")
+    yolo_infer = YOLO26UAVInfer(MODEL_PATH)
+
+    # 用视频文件模拟机载相机输入
+    cap = cv2.VideoCapture(VIDEO_PATH)
+    if not cap.isOpened():
+        print(f"错误：无法打开模拟视频文件 {VIDEO_PATH}")
+        exit()
+
+    frame_w = int(cap.get(cv2.CAP_PROP_FRAME_WIDTH))
+    frame_h = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT))
+    img_center_x, img_center_y = frame_w / 2, frame_h / 2
+
+    print(f"成功加载视频，分辨率: {frame_w}x{frame_h} | 正在进行 NPU 循环推理...")
+    fps_start_time = time.time()
+    frame_count = 0
+
+    while True:
+        ret, frame = cap.read()
+        if not ret:
+            print("视频播放结束或无法读取。")
+            break
+
+        frame_count += 1
+
+        # 1. 预处理与 NPU 推理
+        input_tensor = yolo_infer.preprocess_frame(frame)
+        raw_result = yolo_infer.infer(input_tensor)
+        detections = yolo_infer.postprocess(raw_result, conf_threshold=CONF_THRESHOLD)
+
+        # 2. 模拟数据下发接口（核心优化点）
+        if len(detections) > 0:
+            best_det = max(detections, key=lambda x: x[4])  # 追踪置信度最高的目标
+            x1, y1, x2, y2, conf, cls_id = best_det
+            target_x, target_y = (x1 + x2) / 2, (y1 + y2) / 2
+
+            # 计算标准化像素偏差（-1.0 到 1.0）
+            err_x = (target_x - img_center_x) / img_center_x
+            err_y = (target_y - img_center_y) / img_center_y
+
+            # 模拟发送给飞控
+            print(
+                f"[Frame {frame_count:04d}] 检测到目标(类别:{cls_id}/置信度:{conf:.2f}) -> 模拟下发飞控控制量 err_x: {err_x:+.4f}, err_y: {err_y:+.4f}")
+        else:
+            print(f"[Frame {frame_count:04d}] 未检测到目标 -> 告知飞控保持悬停对准...")
+
+        # 3. 计算端到端真实 FPS（包含预处理、推理和后处理）
+        if frame_count % 30 == 0:
+            end_time = time.time()
+            avg_fps = 30 / (end_time - fps_start_time)
+            print(f"----------------> 当前香橙派端到端平均处理速度: {avg_fps:.1f} FPS")
+            fps_start_time = time.time()
+
+    cap.release()