PVS：被动视觉系统

“被动视觉系统”（Passive Vision System）通常简写为PVS，这种缩写形式便于快速记录和日常使用，在计算机及相关硬件领域中尤为常见。它主要用于描述不主动发射能量、仅依靠环境光或已有信号进行感知和成像的技术系统，广泛应用于机器视觉、安防监控以及图像识别等多个技术场景。

In order to study the theory of uncalibrated 3D Euclidean reconstruction based on simple image and solve characteristic point match problem in passive vision system, an effective active vision technique is introduced.
为研究基于单幅二维图像不标定欧氏重构三维场景的理论，解决被动视觉系统(PVS)中难以解决的特征点匹配问题，文章介绍一种有效的采用伪随机编码结构光照明主动视觉技术。
Passive night vision system using external light and the heat of object itself to achieve the purpose by the imaging signal amplifier.
被动夜视系统是利用外界光亮及物体本身所发的热，通过信号放大器以达到成像目的。
A passive vision sensing system to acquire the image of molten pool in MAG welding was set up and many typical molten pool images were obtained.
针对MAG焊特点，利用被动式熔池视觉传感系统，采集到清晰的熔池图像；
A passive binocular vision measuring system for3D-perception of mobile robot is studied.
研究了一种用于移动机器人进行三维感知的被动双目立体视觉测量系统。
Finally, subdivision surface fitting technique is applied to get object-level local refinement of the surface reconstruction. A passive binocular stereo vision system with adaptive baseline is introduced.
最后运用细分曲面拟合技术，对物体表面进行层次局部加细的曲面重建。

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