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AE滚动快门效果插件The Foundry RollingShutter v1.1v3 支持AE (Win64)CS5, CS5.5, CS6, CC

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RollingShutter是一个为After Effects和Nuke设计的崭新工具,用于矫正在使用CMOS相机时经常遇到的图像变形问题。

Rolling shutter(滚动快门)效应常见于采用CMOS图像传感器的摄像机。这些摄像机通过从上至下逐行扫描的方式来记录每一帧,而不是在某个时间点全局曝光。

由于图片的各部分记录于不同的时间点,快速移动的物体,或由于相机摇摄而相对快速移动的物体,会产生沿对角线倾斜的变形。其他常见的变形还包括手持相机时产生的图像摇晃,以及使用闪光灯时的曝光问题。

这些图像变形不仅难看讨厌,在电影特效后期制作时还会增加三维跟踪的难度,因为跟踪点自身会受到相同的变形影响而不能提供准确的结果。

通过使用局部运动估计(Local Motion Estimation)技术,即使物体相对于摄像机存在不同方向或者不同速度的运动, 我们也可以对各个区域逐一矫正。

The Foundry公司的RollingShutter插件从电影特效师的角度出发来解决倾斜和摇晃问题。虽然通过减少或者根除图像变形,此插件经常可以大幅度提高电影片段的视觉效果,然而其主要目的还是在于提高跟踪软件在各种受变形影响的电影片段里的适用性。

CMOS Correction for After Effects
ROLLINGSHUTTER is a brand new plug-in tool for After Effects and Nuke which tackles image-distortion problems often experienced by users of CMOS cameras.

Rolling shutter effects are commonly found with video cameras employing CMOS image sensors, which record every frame line-by-line from top to bottom of the image, rather than as a single snapshot of a point in time.

As parts of the image are recorded at different times, fast-moving objects, or objects that pass quickly through frame during camera whip-pans, become distorted with diagonal skews. Other typical distortions include image wobbles created when cameras are hand-held, and exposure problems with flashing or strobing lights.

Along with being ungainly and unwanted, these image distortions also increase the difficulty of 3D tracking during VFX post production, as the tracking points themselves can be equally affected or not deliver accurate results.

Using Local Motion Estimation technology, we can individually correct parts of the image that are moving relative to the camera, even if they are moving in different directions or at different speeds.

Support: for CS5, CS5.5, CS6, CC

More info: http://www.thefoundry.co.uk/products/rollingshutter/
Training: http://www.thefoundry.co.uk/products/rollingshutter/user-guides/

 

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