用户交互：adobe在此次发布中首次支持多点触摸和手势，这一点对于那些使用过iPhone的用户来说再熟悉不过了。
User interaction: the release includes the first steps towards Flash providing support for both multi-touch and gestures that users are becoming accustomed to with devices like the iPhone.
高性能的图像处理技术是基于视觉的多点触摸技术的关键，对于特征点的检测和跟踪是完成多点触摸系统的基础。
The fundamental technique of vision-based multi-touch technique is the high performance image processing, the basic of the multi-touch system is the blob recognition and tracking.
对于激光切割点移动轨迹的多点自动纠偏技术也作了介绍。
Meanwhile, the multidrop automatic rectification of the track of the laser cutting point is also commented.
其次，在跟踪方向的计算上，将原始的基于两点的跟踪方向扩展到多点的跟踪，使得算法对于弯曲血管的跟踪更加稳定。
Then, the original tracking based on two points' direction is extended to multi-point tracking, which makes the algorithm more robust for tracking the curving vessel.
其次，在跟踪方向的计算上，将原始的基于两点的跟踪方向扩展到多点的跟踪，使得算法对于弯曲血管的跟踪更加稳定。
Then, the original tracking based on two points' direction is extended to multi-point tracking, which makes the algorithm more robust for tracking the curving vessel.
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