新增 汽车360度全景展示移动端Web应用

- 实现触摸滑动旋转查看汽车360度全景
- 添加惯性滑动效果和自动旋转展示功能
- 实现全屏沉浸式体验和精美Loading动画
- 添加Python视频帧提取脚本和浏览器端提取工具
- 包含本地HTTP服务器和完整项目文档

extract_frames.py

@@ -0,0 +1,37 @@
+import cv2
+import os
+
+# 配置
+video_path = r'J:\git\3D-pano\video.mp4'
+output_dir = r'J:\git\3D-pano\images'
+total_frames = 336
+
+# 确保输出目录存在
+os.makedirs(output_dir, exist_ok=True)
+
+# 打开视频
+cap = cv2.VideoCapture(video_path)
+if not cap.isOpened():
+    print('Error: Cannot open video')
+    exit(1)
+
+video_frame_count = int(cap.get(cv2.CAP_PROP_FRAME_COUNT))
+print(f'Video total frames: {video_frame_count}')
+
+# 计算帧间隔
+interval = video_frame_count // total_frames
+
+for i in range(total_frames):
+    frame_idx = i * interval
+    cap.set(cv2.CAP_PROP_POS_FRAMES, frame_idx)
+    ret, frame = cap.read()
+    
+    if ret:
+        output_path = os.path.join(output_dir, f'car_{str(i+1).zfill(3)}.jpg')
+        cv2.imwrite(output_path, frame, [cv2.IMWRITE_JPEG_QUALITY, 90])
+        print(f'Saved: {output_path}')
+    else:
+        print(f'Failed to read frame {frame_idx}')
+
+cap.release()
+print(f'Done! Extracted {total_frames} frames to {output_dir}')